--- product_id: 7937315 title: "Spark Plugs E3.34 Powersports Spark Plug for Motorcycles, ATVs, Snowmobiles, and More, Patented DiamondFIRE Technology, Pack of 1" brand: "e3" price: "£9.16" currency: GBP in_stock: true reviews_count: 8 category: "E3" url: https://www.desertcart.co.uk/products/7937315-spark-plugs-e3-34-powersports-spark-plug-for-motorcycles-atvs store_origin: GB region: United Kingdom --- # 12% more power boost 13% improved fuel efficiency 58% lower CO emissions Spark Plugs E3.34 Powersports Spark Plug for Motorcycles, ATVs, Snowmobiles, and More, Patented DiamondFIRE Technology, Pack of 1 **Brand:** e3 **Price:** £9.16 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your ride with power, efficiency, and eco-edge! ## Quick Answers - **What is this?** Spark Plugs E3.34 Powersports Spark Plug for Motorcycles, ATVs, Snowmobiles, and More, Patented DiamondFIRE Technology, Pack of 1 by e3 - **How much does it cost?** £9.16 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/7937315-spark-plugs-e3-34-powersports-spark-plug-for-motorcycles-atvs) ## Best For - e3 enthusiasts ## Why This Product - Trusted e3 brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Cold Start Champion:** Engineered for quick starts even in freezing temps—never get left in the cold. - • **Eco-Friendly Powerhouse:** Slash carbon emissions by 58%, keeping your engine clean and green. - • **Ride Longer, Spend Less:** Boost fuel economy by up to 13%—because every drop counts. - • **Versatile Compatibility:** Fits motorcycles, ATVs, snowmobiles & replaces top Champion and NGK plugs effortlessly. - • **Unleash Peak Performance:** Patented DiamondFIRE tech delivers up to 12% more power for your ride. ## Overview The E3.34 Powersports Spark Plug features patented DiamondFIRE technology with a dual-leg ground electrode for superior heat transfer and durability. Designed for motorcycles, ATVs, and snowmobiles, it delivers up to 12% more power and 13% better fuel efficiency while reducing emissions by over 50%. Compatible with popular Champion and NGK plugs, it ensures reliable cold starts and cleaner combustion, making it the go-to upgrade for high-performance powersport engines. ## Description The E3.34 Premium Powersports Spark Plug is expertly designed for a variety of powersport applications, including older Harley Davidson motorcycles, ATVs, boats, jet skis, snowmobiles, and more. Featuring a 14mm, 0.750-inch reach plug with a gasket seat, this high-performance spark plug incorporates E3’s patented DiamondFIRE ground electrode. This innovative design delivers greater power, faster starts, improved fuel efficiency, and reduced emissions for long-term use. Engineered with 2 support legs, the electrode ensures exceptional heat dissipation and durability, withstanding the intense demands of powersport engines. The nickel alloy center electrode with a copper core enhances conductivity for superior performance. The DiamondFIRE technology promotes near-perfect combustion, optimizing engine output while reducing carbon buildup and harmful emissions. Replaces CHAMPION plugs RN9YC, RN11YC, and RN12YC, as well as NGK plugs BPR5ES, BPR6ES, BPR7ES, and BR5ES, making it a versatile upgrade for various applications. With proven increases in power by 6% to 12% and fuel efficiency by 4% to 13% (depending on engine class), the E3.34 spark plug ensures your vehicle runs at peak performance while minimizing its environmental impact. Proudly delivering a 58% reduction in CO emissions and a 42% reduction in hydrocarbons, this spark plug is ideal for both 2-stroke and 4-stroke engines. Review: Works well in vintage motorcycle - These have become my plug of choice in my 1972 Norton Commando. The primary reason I like them is that the Commando is kickstart only (no electric start), and my bike has been retrofitted with a Mikuni carburetor, which doesn't have a conventional choke. So cold starting is quite a big deal. With other plugs, it has taken multiple kicks to get the engine to roll over. With these, if the engine is stone cold and the carburetor is set in "fuel enrichment" mode (the rough equivalent of choking a conventional carburetor), unless the engine has sat long enough to wet sump, it'll start on the second kick every time. (The first kick is required to get a charge down the intake runners, so it really doesn't count.) If the engine is warm, the tiniest little kick will send it over and running on one try. And if the engine has wet sumped, it make take a few additional kicks but the plug will run hot enough quickly enough not to oil foul. With a wet sumped condition in the crankcase, you'll get a puff or two of gray smoke as the extra oil burns off. But the plugs resist fouling quite nicely. And I can't say that about a lot of other plugs. I have yet to try cleaning, regapping, and reinstalling old plugs. But since I only have to supply two plugs (it's an old British twin, so it only has two cylinders), the cost of just putting in new ones is hardly prohibitive, even at the roughly $8 cost per plug. The nose and electrode lengths are also correct for the conventional plug to which they cross, at least in the case of my motorcycle. So there've been no problems with pistons colliding with plug electrodes. Clearance seems good for this application. In the attached photos, you can see this plug compared to the Autolite plugs that were in the bike when I bought it several years back. Note that I am running a Tri-Spark electronic (aftermarket) ignition system that's a bit more responsive than the stock point setup. I'm also running 7mm solid core plug wires without resistive suppression to get the hottest spark possible. (And I have a lot of series inductive and parallel capacitive bypass in the completely-rewired electrical system to keep noise to a minimum.) Overall, a somewhat pricier plug than most. But since I only replace two of them once a year, I can live with the added cost. Review: reliable and burn cleanly - change these yearly for my Ariens snow thrower. we live in the West, 12-16ft of snow per year, temps below zero in January. these and strong and reliable, they fire up every time. they burn clean; one year I had to use an alternative that didn't last half the snow season and was churning out black smoke. top quality, I'll never use anything else in this 'thrower. can't recommend more highly!! ## Features - FOR POWERSPORT ENGINES: Built for motorcycles, ATVs, snowmobiles, and other high-performance engines to increase power, improve fuel efficiency, and reduce emissions across a variety of riding conditions - DIAMONDFIRE TECHNOLOGY: Patented ground electrode with two legs enhances heat transfer and durability, delivering optimized combustion to meet the intense demands of powersport applications - MORE POWER AND FUEL EFFICIENCY: E3 Spark Plugs deliver up to 12% more power and up to 13% better fuel economy in small engines, and up mid-single digits on automotive applications, helping to enhance overall engine performance and reduce fuel consumption across a wide range of vehicles - LOWER EMISSIONS: The more complete burn helps to reduce emissions, minimize carbon buildup, promote cleaner combustion, and support compliance with modern environmental and emissions standards - VERSATILE FIT: Replaces Champion RN9YC, RN11YC, RN12YC and NGK BPR5ES, BPR6ES, BPR7ES, BR5ES; includes one E3.34 spark plug with 14mm thread diameter and 0.750-inch thread reach ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0022ZCI7Y | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #71,824 in Automotive ( See Top 100 in Automotive ) #27 in Powersports Spark Plugs | | Brand | E3 | | Brand Name | E3 | | Compatible with Vehicle Type | Motorcycle | | Core Material | Copper | | Customer Reviews | 4.4 out of 5 stars 809 Reviews | | Gap Size | 0.03 Inches | | Global Trade Identification Number | 00894489000343 | | Included Components | spark,plugs | | Item Type Name | Spark Plugs | | Manufacturer | E3 Spark Plugs | | Manufacturer Part Number | E3.34 | | Manufacturer Warranty Description | 90 Day | | Model Number | E3.34 | | OEM Equivalent Part Number | E3.34 | | Part Interchange Info | E3.34 | | Thread Size | 14mm | | Top Material Type | Alloy Steel | | UPC | 894489000343 | | Unit Count | 1.0 Count | | Vehicle Service Type | Motorcycle | ## Product Details - **Brand:** E3 - **Core Material:** Copper - **Thread Size:** 14mm - **Top Material Type:** Alloy Steel - **Vehicle Service Type:** Motorcycle ## Images ![Spark Plugs E3.34 Powersports Spark Plug for Motorcycles, ATVs, Snowmobiles, and More, Patented DiamondFIRE Technology, Pack of 1 - Image 1](https://m.media-amazon.com/images/I/51WHiiCa+LL.jpg) ## Questions & Answers **Q: Will this fit a westinghouse wh7500c 420cc generator?** A: The easiest way is to see which Spark Plug came with your Generator OR Go on the Generator's Website and look it up. THEN go to the E3 Website. There will be a conversion Chart to cross-reference. **Q: Hello shopping for Spark plugs for Kawasaki ultra 300 jet ski couldn't find it on the list** A: Go to E3s Website and they will give you the corresponding plug for your stock one. **Q: will these fit mini cooper s turbo charged** A: I am sorry but I have no idea **Q: will this fit coleman 400 utv?** A: Not sure, I ride a 1995 Yamaha Virago XV 1100. Amazon will filter your results if you add your ride in your profile ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works well in vintage motorcycle *by E***N on February 10, 2024* These have become my plug of choice in my 1972 Norton Commando. The primary reason I like them is that the Commando is kickstart only (no electric start), and my bike has been retrofitted with a Mikuni carburetor, which doesn't have a conventional choke. So cold starting is quite a big deal. With other plugs, it has taken multiple kicks to get the engine to roll over. With these, if the engine is stone cold and the carburetor is set in "fuel enrichment" mode (the rough equivalent of choking a conventional carburetor), unless the engine has sat long enough to wet sump, it'll start on the second kick every time. (The first kick is required to get a charge down the intake runners, so it really doesn't count.) If the engine is warm, the tiniest little kick will send it over and running on one try. And if the engine has wet sumped, it make take a few additional kicks but the plug will run hot enough quickly enough not to oil foul. With a wet sumped condition in the crankcase, you'll get a puff or two of gray smoke as the extra oil burns off. But the plugs resist fouling quite nicely. And I can't say that about a lot of other plugs. I have yet to try cleaning, regapping, and reinstalling old plugs. But since I only have to supply two plugs (it's an old British twin, so it only has two cylinders), the cost of just putting in new ones is hardly prohibitive, even at the roughly $8 cost per plug. The nose and electrode lengths are also correct for the conventional plug to which they cross, at least in the case of my motorcycle. So there've been no problems with pistons colliding with plug electrodes. Clearance seems good for this application. In the attached photos, you can see this plug compared to the Autolite plugs that were in the bike when I bought it several years back. Note that I am running a Tri-Spark electronic (aftermarket) ignition system that's a bit more responsive than the stock point setup. I'm also running 7mm solid core plug wires without resistive suppression to get the hottest spark possible. (And I have a lot of series inductive and parallel capacitive bypass in the completely-rewired electrical system to keep noise to a minimum.) Overall, a somewhat pricier plug than most. But since I only replace two of them once a year, I can live with the added cost. ### ⭐⭐⭐⭐⭐ reliable and burn cleanly *by A***R on April 19, 2025* change these yearly for my Ariens snow thrower. we live in the West, 12-16ft of snow per year, temps below zero in January. these and strong and reliable, they fire up every time. they burn clean; one year I had to use an alternative that didn't last half the snow season and was churning out black smoke. top quality, I'll never use anything else in this 'thrower. can't recommend more highly!! ### ⭐⭐⭐⭐⭐ Duel spark plug *by R***H on January 28, 2026* Great spark plug. Still holding up strong ## Frequently Bought Together - E3 Spark Plugs E3.34 Powersports Spark Plug, Pack of 1 - E3 Spark Plugs E3.36 Powersports Spark Plug (1) (E336) - E3 Spark Plugs E3.32 Premium Powersports Spark Plug w/DiamondFIRE Technology (Pack of 1) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/7937315-spark-plugs-e3-34-powersports-spark-plug-for-motorcycles-atvs](https://www.desertcart.co.uk/products/7937315-spark-plugs-e3-34-powersports-spark-plug-for-motorcycles-atvs) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-28*