They are the original company that created the first commercial spark plug way back over a century ago. Dealer participation may vary. For example, a 2019 Road Glide® Special motorcycle in Billiard Blue with an MSRP of $27,989, no down payment and amount financed of $27,989, 60 month repayment term, and 2.99% APR results in monthly payments of $502.80. If Champion makes the HD plug, my guess is that HD has beaten them into pulp over price, and low price doesn't always get you good quality. In keeping with a stock-replacement philosophy, this is not an aggressive plug and is tuned primarily for low-RPM performance. Financing Offer available only on Used Harley‑Davidson Street® motorcycles financed through Eaglemark Savings Bank (ESB) and is subject to credit approval. For example, a 2015 Street™ XG500 motorcycle model in Vivid Black with a sale price of $6,799, no down payment and amount financed of $6,799, 72 month repayment term, and 5.49% APR results in monthly payments of $111.05. Not all applicants will qualify. Thus, designers are often tasked with designing a plug that is at home in specific rev-ranges. If you do, then there’s no reason not to enjoy adding a little extra bling to your block. Eligibility and amount of credits and rebates depend on your personal situation. "name": "How Do You Know When You Need to Change Spark Plugs in Your Harley Davidson? Iridium Spark Plugs Bosch Iridium Spark Plugs are engineered to deliver both high performance and long life, representing advanced OE spark plug technology. Fuel economy and mileage may vary among motorcycle models within a family. However, it is out of stock at the time of writing. The electrode on a sparkplug is analogous to a garden hose. These Specific Spark Plugs are from a Harley-Davidson Dealer Bulk Pack. Other terms, conditions, and limitations may apply. Then age 20 I owned a Yamaha motorcycle. First up, we have this pair of spark plugs from a industry leading manufacturer NGK, which come already pre-gapped. The smaller the tip, the more forceful the spark will be for a given voltage or amperage. Estimated from fuel economy tests on a sample motorcycle from the corresponding family conducted by Harley-Davidson under ideal laboratory conditions. ACDelco 41-993 Professional Iridium Spark Plug (Pack of 4) 3. Void where prohibited. The customer (“Purchaser”) must purchase a new or used model year 2013 or newer Harley-Davidson Sportster motorcycle available and in stock a participating U.S. H-D dealer ("Eligible Motorcycle") between February 1, 2019 and August 31, 2019 ("Sales Period"). APR is calculated according to the simple interest method. Not all applicants will qualify. However, this effect can weaken or destroy a coil or coil pack over time. This design reduces the intensity of the spark generated by the plug. If you are running a stock engine, the best option is to search for the OEM model of plug for your bike. Free delivery and returns on eBay Plus items for Plus members. Financing offer is subject to change or cancellation at anytime. "@type": "Answer", NGK spark plug for EVO 1340 and Shovelheads. First, yttrium possesses greater thermal transfer properties, meaning this plug will stay cooler in higher-performance applications. "text": "Different models of Harley Davidson will require slightly different spark plugs. Further, the heat dissipation qualities of this alloy are comparatively poor. While this may slightly impact top-end performance, it also significantly reduces the strain on the ignition system. Best Spark Plugs for Harley Davidson And now for the fun part. If you own a Harley Davidson, chances are that you are passionate about your motorcycle. Compared to a standard electrode, the spark-gap performance of an iridium electrode has improved conductivity. There are many reasons that spark plugs can need to be changed, including fowling or electrode erosion. Financing Offer available only on new Harley-Davidson® motorcycles financed through Eaglemark Savings Bank (ESB) and is subject to credit approval. Thus, in terms of the electrical contact area, there are few plugs with more. out the use of precious metals. I have an immense love for motorcycles. If you are looking for a spark plug that prioritizes reliability over peak performance, the Champion 810 is a plug to consider. 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. Thus, this is an excellent OEM-replacement plug that will serve well in any relatively stock application. You probably don’t think about changing the spark plugs very often when you’re out riding. In this example, customer is responsible for applicable taxes, title, licensing fees and any other fees or charges at the time of sale. Get FREE standard shipping with a $50 purchase. "@context": "https://schema.org", }] Yttrium and iridium are the two prominent “exotic” metals that now make their way into plugs. For example, a 2020 Heritage Classic in Billiard Burgundy with an MSRP of $19,399, 10% down payment and amount financed of $17,459.10, 60 month repayment term, and 3.49% APR results in monthly payments of $317.53. "name": "What Spark Plugs Do I Need For My Harley Davidson? The M8 has two Harley Davidson spark plugs per cylinder. 15 Tips for Your First Motorcycle Road Trip, How To Get Ready For Motorcycle Riding Season. (1) 1 product ratings - Genuine Harley-Davidson OEM Spark Plugs 6R12 (Pair) for Twin Cam/Sportster (81.7 kg) operator weight. Dealer participation may vary. Having the proper spark plugs is one of the most important things you can do to make sure your bike runs its best. The electrode is the area where the spark itself is generated by the voltage being fed into the plug. Financing Offer available only on new Harley‑Davidson ® motorcycles financed through Eaglemark Savings Bank (ESB) and is subject to credit approval. However, there are three main variables with spark plugs: metallurgy, electrode size, and electrode number. Do not pull on the wire itself. Alternatively ring our order line UK +44 (0)1253 296 416 or e-mail us and we'll call you back. APR is calculated according to the simple interest method. NGK Iridium IX DCPR7EIX Spark Plugs for 1999-2016 Harley Davidson Twin Cam (Pair) 4.6 out of 5 stars 812 $15.23 $ 15. However, if your engine is modified, you may wish to speak to a qualified tuner for your best option." Financing offer is subject to change or cancellation at any time. Actual range will vary depending on riding habits, ambient weather and equipment conditions. What Spark Plugs Do I Need For My Harley Davidson? $2,000 Harley-Davidson motorcycle trade-in credit cannot be combined with other offers and cannot be used as a down payment. But if reliability is your goal, consider an iridium plug. As explained above, smaller electrodes tend to result in a hotter spark. Third-party trademarks are the property of their respective owners. We sorted it by model, so you can have a look really easy. The other advantage of this design is that the shape of the electrode promotes more efficient cooling of the plug itself. The brand is among the most reliable ones when it comes to spark plugs production. It would be ultimately pointless to spend too much time analyzing the performance characteristics of this plug because that was never the focus of the design. Brisk USA specializes in the use of silver center electrode technology in our high performance and racing spark plugs, but also offers OEM auto parts and wide assortment of iridium spark plugs, copper sparkplugs, platinum spark plugs and even yttrium spark plugs. Bosch WR8DP+ – Spark Plugs for Harley Davidson Evo While most spark plugs have a specific goal or purpose in mind, not all of them succeed in achieving it. Thus, to get the best performance out of your Harley Davidson, make sure to run the right plugs and replace them as needed. (I guess you could throw condoms in that group also but I don't have recent experience with them.) As discussed above, the ideal spark plug will depend upon your specific application. Yttrium has lower resistance and lower specific heat. See a Harley-Davidson® Dealer for details. ", Dealer participation may vary. We use cookies to ensure that we give you the best experience on our website. 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