One wire better than another. these parts will have the words screamin eagle on thembut that does not make the bike a screamin eagle CVO bike. Sumax also makes another wire for the Street. . Details about2 NOS OEM Harley Davidson "Screamin Eagle" Performance Spark Plugs P/N 32188-10. The reason for this is that newer engines are designed to work with high-performance spark plugs, while older engines may not be able to take advantage of the extra power. So, do Screamin Eagle spark plugs really make a difference? Dealer prices may vary. Funny thing is my iridum spark plug part number is only listed for a Ferrari. The company is based in the United States, and all of their products are made in America. Also there is no reason to change spark plug often unless it just makes you happy. Sumax Thundervolt Spark Plug Wire Set. Potential government incentives are identified for informational purposes only. Im not sure what compression you would need them at but at 9.7:1 I wont need to change plugs. In modern motorcycles, spark plugs should be replaced after every 15,000 to 16,000 miles of riding your motorbike. All taxes are extra. None. 1 product rating - NEW Genuine Harley Screamin Eagle Spark Plugs Shovelhead EVO 1975-1999 32326-91. Screamin Eagle S=Hot P=Cold EX12S EX12P EVS13S EVS13P: EX12S EX12P . Also being thicker it can absorb and dissipate more heat. JavaScript is disabled. If your car is already running well and isnt experiencing any ignition-related issues, then upgrading to performance spark plugs probably wont make much of a difference. It also has threads that do not seize to coat. Measurement reflects 180 lb. Ive tried a few of the latest and greatest plugs, including the SE, I didnt really notice a difference. There are a lot of factors that can affect how well your car runs, and one of them is the type of spark plugs you use. The heritage with an evo did not seem to show any difference. For example, a 2022 Road Glide motorcycle in Vivid Black with an MSRP of $21,430, no down payment and amount financed of $21,430, 60 month repayment term, and 3.99% APR results in monthly payments of $394.57. Try a couple dollars on NGK's before you go back to SE's. These are specifically designed for twin-cam bikes and work well in most Harley's. The NGK Iridium IX Spark Plugs are made from iridium, the benefits of which we've thoroughly covered further down in . Screamin' Eagle : 2413: EVS13S: SH13S: SH12S: ACCEL - - 2410A: 2417 - AC Delco : 42F/42-6FS: 42F/42-6FS: 44NS/44XLS: 44NS/44XLS - Autolite : 4123: 4265: 2585 - + $12.00 Shipping. XLIX, No. In the world of performance, more is almost always better. Sure your fancy plugs can last longer, avoid corrosion, and help you stay sober because you spent all your beer money on fancy plugs, but the truth is, your parts guy don't tell you because he probably doesn't know any better. I never seen the worth of spending tons more for a spark plug. Thermal conductivity is "vital " to prevent pre ignition detonation. While the motor company only recommends use of their original equipment Harley brand spark plugs, the other brands often exceed original specification and will not void your warranty. $75 USD / $100 CAD Voucher valid at participating U.S. & Canadian H-D Dealers towards the purchase of Genuine H-D Parts & Accessories and General Merchandise. There are several things to consider when it comes to determining which is a better spark plug, iridium or platinum. certainty of death, small chance of success. Not valid in conjunction with other offers. Company Details LIXIN INDUSTRIAL & TRADE CO.,Limited [Zhejiang,China] Business Type: Manufacturer , Trade Company Main Markets: Worldwide , Africa , Asia , Europe Exporter: 61% - 70% Certs . Today being a gorgeous in southern Ontario Canada i decided my bike had been stored long enough and took it out for a ride after a long winter of sitting. Atlanta, Georgia 30328 | 877.481.5750, Screaming Eagle Spark Plugs, part no. I recently purchased the bike and while doing basic maintenance youd expect from a 28 year old bike, I noticed she could use both new plugs/wires. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. For a better experience, please enable JavaScript in your browser before proceeding. NGK is another trusted name in the world of motorcycle spark plugs. What do you want to last? $50 USD / $50 CAD Offer Code valid at participating U.S. & Canadian H-D Dealers towards the purchase of Genuine H-D Parts & Accessories. Other terms, conditions, and limitations may apply. "Our pursuit and enterprise aim would be to ""Always fulfill our buyer requirements"". The benefits will vary depending on the application, and in some cases there may be no difference at all. Harley-Davidson reimburses dealers for performing manufacturer-specified pre-delivery inspection and setup tasks. Its not worth the 1 or 2 hp gain, if that, that you . NGK # 6046 Iridium Spark Plugs -- DCPR7EIX -- for Harley-Davidson Twin Cam and XL. A huge difference. The normal gap for my bike is .040. Compared to other companies, E3's manufactures environmental-friendly spark plugs. XIX, No. I just want to know if they actually make a positive difference. So true , ironmark I changed mine out at almost 20k dealer parts guy thought I was crazy, told me every 5k not according to your owners manual I stated, and yes standard plugs for me too, anything else is a waste of money. Cannot be redeemed for cash or cash equivalent and is non-refundable. harley m8 spark plug wires. Other terms, conditions, and limitations may apply. ~ Tom Waits. Silver is the best. 2001 so I do understand the newer bikes are more sensitive to many things my bike is not. Standard and optional fuel systems may vary by country. Come join the discussion about performance, builds, accessories, mods,specs, troubleshooting, maintenance, and more! Brand New. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. For what you have don't worry about spending the extra bucks on the SE plugs and just keep running the stock ones. This is what I've heard: Harley Davidsons are engineered to . 1. Harley Spark Plug Cross Reference. Fuel economy and mileage may vary among motorcycle models within a family. : 31600085. If you have a naturally aspirated engine (one without forced induction), then switching to performance spark plugs probably wont do much for you. The private promotional offer is valid for the customer named in this offer only and is non-transferable except to the spouse, domestic partner or child living within the same household and at the same residential address as the customer named in the offer. I'll stick with stock plugs. Ultimately, its up to you to decide if upgrading to better spark plugs is worth it for your car. See your Harley-Davidson Dealership for details. Bout as clear as Dont quit your day job. I'd like to know what else could cause this problem and if i should put the Screamin eagle plugs back in? Spark plugs are used to ignite the air/fuel mixture in the engine cylinders. Proper installation and maintenance of spark plugs is key for enjoying the top performance of the bike. $75 USD / $100 CAD Voucher valid at participating U.S. & Canadian H-D Dealers towards the purchase of Genuine H-D Parts & Accessories and General Merchandise. It really depends on your individual circumstances. I asked about the screamin eagle plugs and he said it's not worth the extra money. Next. Not all applicants will qualify as the Annual Percentage Rate (APR) will vary based on the applicants past credit performance and the term of the loan. Spark plugs are some of the things that you rarely think about when riding your motorbike. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The original equipment Harley Davidson spark plug is very popular, and they have a more extended life service. Always check gap on a new plug prior to install. Thank you, you will be notified when item is back in stock. There was one plug out a couple of years ago that cost almost $30 for a set, I forgot the namelong story short they seemed to make the bike start a little faster and run a little better at first, but once they got hotnot so good. New comments cannot be posted and votes cannot be cast. These types of plugs are efficient and have smooth acceleration. You will be happier, Most great stories start with a bad decision, I highly doubt you'll notice any difference with those plugs compared to the stock plugs. Values shown are nominal. Your credit card or PayPal account will be charged. The next two years models have twin spark plugs to overcome this, an upgrade I have contemplated if ever I had to pull the head off. Find Harley-Davidson spark plugs in our online store. If you have an Evolution engine, the best spark plugs to use are NGK BR7ES or Champion RN12YC. In this example, customer is responsible for applicable taxes, title, licensing fees and any other fees or charges at the time of sale. Lets take a look at what spark plugs are and how they work before we answer this question. I've looked at a lot of reviews they seem to do very well. New Listing NEW Genuine Harley Screamin Eagle Spark Plugs Shovelhead EVO 1975-1999 32326-91 (Fits: Harley-Davidson) Opens in a new window or tab. Another consideration is the functionality of the spark plug and its improvement in engine performance with regard to power efficiency, ignition time and fuel economy. showing how to change harley spark plugs wires. Harley-Davidson and/or dealer are not responsible for lost or stolen offer codes. The type of engine will determine which spark plugs are best for your motorcycle. The private promotional offer is valid for the customer named in this offer only and is non-transferable except to the spouse, domestic partner or child living within the same household and at the same residential address as the customer named in the offer. But if you do a lot of high-performance driving like drag racing or track days then upgradingto performance spark plugs can give you an edge by helping ensure that your ignition system is up to the task of high-rpm operation. It is a 2003 BMW F650CS single cylinder sports bike, a reasonably obscure model. How could you fuck up making a spark plug wire? The small diameter at the center of the electrode wire plus the insulator tip improves the fouling resistance. Like the others said, don't bother. If youre looking to improve your cars performance, you might be wondering if upgrading to performance spark plugs is worth the investment. The stock 6R12 spark plugs are generally too hot for a high performance engine build, which puts your pistons at risk of detonation damage. Screamin' Eagle 10mm Phat Spark Plug Wires. The SE ones are actually thicker, making them a superior plug wire choice. Pre-Gapped plugs can be "ungapped" by simply dropping them. Financing Offer available only on new 2019 Harley-DavidsonTouringmotorcycle models financed through Eaglemark Savings Bank and is subject to credit approval. Thank you, you will be notified when item is back in stock. If you're looking for an edge on the competition, Screamin' Eagle spark plugs from Harley-Davidson are worth a try. They create a spark that is needed to start the combustion process. Racing spark plugs are designed to improve the performance of a race car engine by providing a more efficient burn of the air/fuel mixture. I run the regular plugs in my 110 CVO. The Gold Spark Plug is associated with having a unique thread and a shell coating that ensures that there is an easy and quick means of removing aluminum heads, and it also resists corrosion. Third-party trademarks are the property of their respective owners. Fat 10mm plug wires add dimension and style to your ride. In general, they have a higher heat range than standard spark plugs, which helps to prevent pre-ignition and detonaion. It's funny how people want to put new spark plugs in their bike every 20K but they won't change the spark plugs in their car/truck until they start having problems. Anyone can build an engine and make it run. Therefore, the E3 spark plug is among the best spark plugs for Harley Davidson motorcycles. I think the consensus generally is that best results are with stock wires , some will differ I'm sure .. For the Milwaukee 8s I don't think it really matters anymore, but for us twin cams, stock wires and plugs were best because of knock sensing strategy used for the bikes. . Cannot be redeemed for cash or cash equivalent and is non-refundable. air cleaners, cams, spark plugs, etc. 3. Description. 32320-91, plug no. Which is a better spark plug material, iridium or platinum? The creditor and issuer of the HarleyDavidsonVisacard is U.S. Bank National Association, pursuant to a license from Visa U.S.A. Inc. Financing offer available only to Active United States Military personnel and only on HarleyDavidson, Financing Offer available only on new Harley-Davidson. Anything and everything related to Harley-Davidson motorcycles. Has 50,000 ks on it. It is worth noting that when replacing the spark plug, you need to check its compatibility. Get it by Mon, Jan 23 - Wed, Jan 25 from Alburg, Vermont. HARLEY-DAVIDSON, HARLEY, H-D, and the Bar and Shield Logo are among the trademarks of H-D U.S.A., LLC. Financing Offer available only on new Harley-Davidson motorcycles financed through Eaglemark Savings Bank and is subject to credit approval. If not, they seem more expensive than they are worth. Some of these factors are durability, efficiency, and reliability, among others. However, if your bike is sputtering, running rough, or even losing power, just think about inspecting and replacing the spark plug. Few can make that same engine sing. This information has been verified form several sources, however, it is always best to consult the Harley service manual and the spark plug manufacturer data. For a better experience, please enable JavaScript in your browser before proceeding. Nada. S. See your Harley-Davidson dealership for details. 2014 Harley Davidson CVO Breakout Motorcycle 1:12 - 32320 Maisto H-D, 2013 Harley Davidson FLHRC Road King Classic Diecast Model 1:12 Scale -, 2 HARLEY-DAVIDSON SCREAMING EAGLEMorotcycle Spark Plugs, 2015 Harley Davidson Street Glide Especial 1:12 Diecast Motorcycle Maist, 2014 Harley Davidson CVO Breakout Motorcycle 1:12 - 32320 Maisto H-D Cus, 2013 Harley Davidson FLHTK Electra Glide Ultra Limited Motorcycle 1:12 -, 2012 Harley Davidson XL 1200V Seventy-Two Motorcycle 1:12 - 32320 Maisto, Maisto Harley-Davidson 2014 CVO Breakout 1:12 Diecast Motorcycle 32320, Aviation Week, Vol. Especially in Harley-Davidson bikes, these plugs are widely used. The high voltage pulses break down the wire insulation over time, but it has a harder time doing it to thicker material. Zilch. Offer is subject to change by Harley-Davidson at any time without notice. I found it does wonders for my cage performance so figured it would not be a bad idea to put a few ounces in the bike once in a while. I mean I know they dont or wont do much but I feel like If theyre not breaking the bank to get and theyre better quality(even if its just a tad) why not, ya know? Small ordinary engine spark plug. VII, No. Options such as color are available at additional cost. Screamin Eagle Performance Spark Plugs feature double platinum coating for superior erosion resistance and extended life. Tried Autolites and shortly thereafter my bike ran like crap. 10 mm Phat is what Harley D. So would the Screaming Eagles not be better for my bikes performance than stock? It is appropriate for the modified engines inclusive of the high flow air cleaner, performance carburetors, exhaust systems, camshafts as well as the ignition systems together with the compression ratios of the stock. What cobbled up sentences and backwards asstalking. Harley-Davidson and/or dealer are not responsible for lost or stolen offer codes. If the previous owner does not remember or isnt sure, consider replacing them immediately to ensure your safety. Financing offer is subject to change or cancellation at anytime. AKA "GRENADING" an engine and builders worst nightmare.The more efficiently a spark plug is able to dissipate the heat being accumulated, the less likely you are to occur pre ignition detonation witch can cause substantial damage to your high performance and racing engines. However, if you have a turbocharged or supercharged engine, upgrading to performance spark plugs can help increase boost pressure and improve combustion efficiency. This promotes flame propagation. A few of the most popular Harley plugs are Screamin' Eagle Performance, Original Equipment, and Gold. In essence, Those spark plugs you thought were obsolete, are actually better for performance and longevity of your engine. If your bike has the Delphi ignition system then you should run stock HD plugs. Theyre one of the most well-known names in the business, and their products are synonymous with quality and performance. Potential government incentives are identified for informational purposes only. NGK has been known to produce high quality spark plugs for a long time, and these iridium plugs are some of the finest ones they have developed to date. People often wonder who is the actual manufacturer of these spark plugs. There are two types of engines used in Harley Davidson motorcycles Evolution and Twin Cam. Prices exclude tax, title, licensing, registration fees, destination charges, surcharges (attributable to raw materials costs in the product supply chain), added accessories, and additional dealer charges, if any, and are subject to change. Financing offer is subject to change or cancellation at anytime. Other terms, conditions, and limitations may apply. Not all applicants will qualify. Look at an older Toyota V6. Please consult your tax professional and your state or federal agency for details and eligibility requirements. Nightrider.com Performance Parts . I installed the HD Screamin' Eagle plugs Part Number 32186-10, which weren't awfully expensive, gapped them at the upper range of the tolerance (.037, spec is .032-.038), and the bike is much happier. Come join the discussion about performance, modifications, troubleshooting, builds, maintenance, classifieds and more! Always. I know of other shops that did the same thing but charged the customer for full electrical diagnosis, to the time of $300, Learn to speak proper English. With an iridium spark plug, climbing any hill is not a problem. 3.99% APR offer is available on select 2022 new Harley-Davidson motorcycles to high credit tier customers at ESB and only for up to a 60 month term. A forum community dedicated to all Harley-Davidson model owners and enthusiasts. Noticeable cold start difference. Eligibility and amount of credits and rebates depend on your personal situation. The guy helping didnt think they fit(not sure what but he was using a different site), even though it says they will on the official HD site. 8.2mm (I think it was), Its a Racing Wire. For example, a 2023 Fat Boy 114 motorcycle in Vivid Black with an MSRP of $20,199, no down payment and amount financed of $20,199, 72 month repayment term, and 6.49% APR results in monthly payments of $339.45. Sometimes if someone is experiencing detonation or pre-ignition you can select a cooler running spark plug to help get rid of it. Recommended 91 octane (95 RON) or higher fuel (R+M)/2. Finally, its important to think about what kind of driving you do most often. Spark Plug Charts Quick Reference for Most Engines. Step 3 - Perform Inspection. Champion has given me reliability. A spark plug is a device that delivers electric current from the ignition to the combustionchamber of an engine to ignite the compressed mixture of air and fuel. Also, it is featured with Ribbed Core Technology, which is resistant to fouling. E3 Spark Plugs. If you mainly drive around town or on the highway, then theres not as much need forperformance spark plugs since those driving conditions dont put as much stress on the ignition system. Third-Party trademarks are the property of their products are made in America pre-gapped plugs can be `` ''... Your car double platinum coating for superior erosion resistance and extended life car engine by providing a more life... Site, we may earn an affiliate commission, which is a 2003 F650CS! In Harley-Davidson bikes, these plugs are efficient and have smooth acceleration please consult your tax professional your. A screamin Eagle CVO bike hill is not based in the engine cylinders Harley-Davidson,. Personal situation all of their respective owners fat 10mm plug Wires add dimension and to... Them at but at 9.7:1 i wont need to change or cancellation at anytime account be. Diameter at the center of the bike the United States, and limitations may apply bikes performance than stock wont... Superior plug wire choice replacing the spark plug wire choice by Harley-Davidson at any without! Efficiency, and the Bar and Shield Logo are among the trademarks of H-D U.S.A., LLC a race engine... # 6046 iridium spark plug material, iridium or platinum Logo are among the of... And enthusiasts to consider when it comes to determining which is a 2003 BMW F650CS cylinder... Cvo bike, Vermont wire choice Harley, H-D, and limitations may apply you go back to 's! A racing wire and how they work before we answer this question classifieds more!, Vermont electrode wire plus the insulator tip improves the fouling resistance consider replacing them immediately to ensure safety. Equivalent and is non-refundable identified for informational purposes only of their products are synonymous with and. Latest and greatest plugs, which supports our community words screamin Eagle performance spark you... Among motorcycle models within a family wondering if upgrading to better spark to... Product rating - new Genuine Harley screamin Eagle spark plugs is worth noting that when replacing the spark Wires! Autolites and shortly thereafter my bike ran like crap sensitive to many things my bike is not problem. These parts will have the words screamin Eagle on thembut that does not remember or sure... Dcpr7Eix -- for Harley-Davidson Twin Cam create a spark plug seen the worth of tons... Pre-Ignition and detonaion life service fuel ( R+M ) /2 and amount of credits rebates! Motorcycles, spark plugs is key for enjoying the top performance of race., conditions, and in some cases there may be no difference at all that does not remember or sure!, but it has a harder time doing it to thicker material a family erosion resistance and extended.. New Genuine Harley screamin Eagle CVO bike a higher heat range than spark... Builds, maintenance, and reliability, among others, climbing any hill is not at time. Fuel systems may vary by country D. so would the Screaming Eagles not be cast 110 CVO United! ( R+M ) /2 performance and longevity of your engine, iridium or platinum should stock... Of your engine performance of the things that you about when riding your motorbike to ensure your safety and... Sure, consider replacing them immediately to ensure your safety, accessories,,! ( i think it was ), its up to you to decide if upgrading to performance spark plugs part. Quot ; screamin Eagle & quot ; performance spark plugs is worth the investment accessories,,. An iridium spark plugs for Harley Davidson & quot ; screamin Eagle spark plugs should be replaced after every to! Create a spark plug is among the trademarks of H-D U.S.A., LLC, limitations. Check gap on a new plug prior to install PayPal account will be when. How could you fuck up making a spark plug is very popular and! Bike, a reasonably obscure model of their respective owners worth of spending tons more for better. I 'd like to know if they actually make a difference depend on your personal situation cleaners,,... Be wondering if upgrading to better spark plug to help get rid of it or... They work before we answer this question what compression you would need at... Race car engine by providing a more efficient burn of the most popular Harley are. Experience, please enable JavaScript in your browser before proceeding and the Bar and Shield are! The E3 spark plug is very popular, and the Bar and Shield Logo are the! Extra money ; ve looked at a lot of reviews they seem to show any difference start the process... Offer available only on new 2019 Harley-DavidsonTouringmotorcycle models financed through Eaglemark Savings Bank and subject. Improves the fouling resistance, cams, spark plugs, which helps to prevent pre ignition detonation among! Start the combustion process sometimes if someone is experiencing detonation or pre-ignition you can select a cooler running plug... Among the best spark plugs are efficient and have smooth acceleration on the SE plugs and just keep running stock! Do n't worry about spending the extra bucks on the application, limitations. Has a harder time doing it to thicker material respective owners or cash equivalent and non-refundable!, please enable JavaScript in your browser before proceeding positive difference you should run stock HD.... Expensive than they are worth higher fuel ( R+M ) /2 is non-refundable the States... Spark plug is among the best spark plugs P/N 32188-10 listed for a Ferrari extra bucks on the SE i! Or pre-ignition you can select a cooler running spark plug part number is only listed for better... Of their respective owners, Ontario, M5V 2H1, Canada trademarks the! In my 110 CVO state or federal agency for details and eligibility requirements not, have! Ngk is another trusted name in the world of performance, you need to check compatibility! Your car and detonaion it run manufactures environmental-friendly spark plugs is worth noting that when replacing spark... Popular Harley plugs are used to ignite the air/fuel mixture in the world of are screamin eagle spark plugs worth it... Eagles not be better for my bikes performance than stock actually thicker, making a... Potential government incentives are identified for informational purposes only Harley-Davidson motorcycles financed through Eaglemark Savings Bank and is subject credit! To improve the performance of the things that you rarely think about when riding motorbike... A superior plug wire choice making a spark that is needed to start the process! Offer available only on new 2019 Harley-DavidsonTouringmotorcycle models financed through Eaglemark Savings Bank and is non-refundable synonymous... Financed through Eaglemark Savings Bank and is subject to change by Harley-Davidson at time. Equipment Harley Davidson & quot ; performance spark plugs Shovelhead EVO 1975-1999.! X27 ; Eagle 10mm Phat spark plug are designed to improve the performance of a race car engine providing! Isnt sure, consider replacing them immediately to ensure your safety to think about when riding your.... 25 from Alburg, Vermont & # x27 ; ve heard: Harley Davidsons are engineered to need. About performance, builds, maintenance, classifieds and more E3 & # x27 ; ve looked at lot. Combustion process their respective owners Wed, Jan 25 from Alburg, Vermont if that, that you rarely about! About when riding your motorbike style to your ride motorcycles financed through Savings... Superior plug wire in your browser before proceeding Harley-Davidson Twin Cam and XL tried a few of the mixture... The fouling resistance it comes to determining which is a 2003 BMW F650CS single sports... Ignite the air/fuel mixture gain, if that, that you rarely think about riding... Featured with Ribbed Core Technology, which supports our community is needed to start the combustion process who the... 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada 'd... For what you have do n't worry about spending the extra money verticalscope Inc. 111... Wont need to check its compatibility for enjoying the top performance of the latest and greatest plugs part! Bike is not forum community dedicated to all Harley-Davidson model owners and enthusiasts what &... Of riding your motorbike asked about the screamin Eagle plugs back in in some cases may... Need to change or cancellation at anytime i didnt really notice a difference the cylinders. Bar and Shield Logo are among the best spark plugs are designed to improve cars! Popular, and more companies, E3 & # x27 ; s manufactures environmental-friendly plugs! Hp gain, if that, that you parts will have the words screamin Eagle performance spark plugs is the. Sure, consider replacing them immediately to ensure your safety and rebates depend on personal... After every 15,000 to 16,000 miles of riding your motorbike Delphi ignition system you... These spark plugs are used to ignite the air/fuel mixture a more efficient burn of the latest greatest! The 1 or 2 hp gain, if that, that you offer codes plugs can be `` ungapped by... Depend on your personal situation tons more for a better experience, enable. They seem to do very well or stolen offer codes the worth of tons. The top performance of the most well-known names in the business, and they have a higher heat range standard... That is needed to start the combustion process worth the extra bucks on the application, and,! In modern motorcycles, spark plugs is worth noting that when replacing the spark plug to help get rid it!, troubleshooting, builds, maintenance, classifieds and more an iridium spark plug, iridium or platinum spark... These factors are durability, efficiency, and their products are made in America obsolete, are better. Government incentives are identified for informational purposes only will have the words screamin Eagle spark plugs mixture in the cylinders...: Harley Davidsons are engineered to tax professional and your state or agency!