--- product_id: 7937316 title: "E3 Spark Plugs E3.38 Premium Powersports Spark Plug with DiamondFIRE Technology, 10mm, 0.750” Reach, Gasket Seat, For Honda, Suzuki, Yamaha, and Other High RPM Engines, Pack of 1" brand: "e3" price: "NT$619" currency: TWD in_stock: true reviews_count: 13 category: "E3" url: https://www.desertcart.tw/products/7937316-e3-spark-plugs-e3-38-premium-powersports-spark-plug-diamondfire store_origin: TW region: Taiwan --- # Up to 12% more power Boosts fuel economy by 3-13% Reduces hydrocarbon emissions E3 Spark Plugs E3.38 Premium Powersports Spark Plug with DiamondFIRE Technology, 10mm, 0.750” Reach, Gasket Seat, For Honda, Suzuki, Yamaha, and Other High RPM Engines, Pack of 1 **Brand:** e3 **Price:** NT$619 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your ride with power, precision, and performance! ## Quick Answers - **What is this?** E3 Spark Plugs E3.38 Premium Powersports Spark Plug with DiamondFIRE Technology, 10mm, 0.750” Reach, Gasket Seat, For Honda, Suzuki, Yamaha, and Other High RPM Engines, Pack of 1 by e3 - **How much does it cost?** NT$619 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/7937316-e3-spark-plugs-e3-38-premium-powersports-spark-plug-diamondfire) ## 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 - • **Wide Compatibility:** Fits Honda, Suzuki, Yamaha & more—perfect for your high RPM powersport machines. - • **Long-Lasting Durability:** Engineered to last up to 100,000 miles—ride worry-free with proven reliability. - • **DiamondFIRE Edge-to-Edge Electrode:** Maximize combustion efficiency for peak engine power and smoother rides. - • **Cleaner Combustion, Lower Emissions:** Stay eco-conscious with reduced carbon buildup and compliance with modern standards. - • **Optimized Heat Transfer & Turbulence:** Innovative design enhances fuel/air mix for faster ignition and smoother acceleration. ## Overview The E3.38 Premium Powersports Spark Plug features patented DiamondFIRE technology that delivers up to 12% more power and improves fuel efficiency by up to 13%. Designed for high RPM engines in motorcycles, ATVs, and snowmobiles, it ensures cleaner combustion with lower emissions and offers a long lifespan of up to 100,000 miles. Compatible with major brands like Honda, Suzuki, and Yamaha, this spark plug guarantees enhanced engine performance, durability, and eco-friendly operation. ## Description The E3.38 Power Sports and Watercraft Spark Plug is engineered for high-performance applications, particularly for import motorcycles like Honda, Suzuki, Yamaha, and other high RPM engines. This 10mm, 0.750” reach spark plug features a gasket seat and is built to withstand the intense vibration common in powersport engine applications. It utilizes the patented DiamondFIRE technology, which enhances power, fuel efficiency, and hydrocarbon emissions over long-term use. The spark plug’s unique ground electrode and full-size center electrode ensure optimal performance, providing a longer lifespan—guaranteed for up to five years or 100,000 miles. The DiamondFIRE side wire is designed to facilitate better heat transfer and increased turbulence within the engine’s cylinder, which enhances combustion. Additionally, the spark plug’s distinctive open design allows for the replenishment of the spark zone with a fresh fuel/air charge, exposing the flame front more directly to the piston head than other plugs. This results in a noticeable increase in engine power, smoother acceleration, reduced fuel consumption, and significantly lower hydrocarbon and carbon monoxide emissions. The E3.38 spark plug replaces Champion G57C, G59C and NGK CR7E, CR8E, CR9E plugs, and is compatible with a variety of powersport and lawn and garden applications, improving engine performance and longevity. Review: Perfect for the price - Amazing spark plugs. After easily installing they have been working great. They were luckily compatible with my 03 Vulcan 800b fitting into the holes perfectly. They have allowed me to have smooth rides and continue to fix up the bike. Review: So far, I like them... - Very interesting plug. I rebuilt an '01 KTM 400 EXC top to bottom. I usually run NGK CR8EIX plugs, and they work great. Since I re-jetted the bike, I figured I'd do a little experiment. I'm a maintenance freak, so my bike has always run at peak performance, but that requires constant maintenance, if you know anything about KTM's. Anyway, the plugs seem to work great. I haven't had the opportunity to switch back to compare with the NGK, but I will and will report back. Theoretically, the E3 plugs make sense. To be honest, before I run the NGK again, I'm going to buy another E3, because I'm not sure I'm even running the proper one for my KTM (even though I'm sure there would be little to no difference). ## Features - POWERSPORT PERFORMANCE: Designed for motorcycles, ATVs, and high RPM engines, this spark plug enhances engine power, fuel efficiency, and reduces hydrocarbon emissions over extended use - DIAMONDFIRE TECHNOLOGY: Patented DiamondFIRE edge-to-edge electrode delivers a faster, more complete burn, increasing power by up to 4%-12% and improving fuel economy by up to 3%-13% depending on engine class - 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 - LONG-LASTING RELIABILITY: Built for durability, this spark plug offers a lifespan of up to 100,000 miles and is guaranteed against defects in materials and workmanship for added peace of mind - WIDE COMPATIBILITY: Direct replacement for Champion G57C, G59C and NGK CR7E, CR8E, CR9E, making it a versatile choice for a variety of powersport applications ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B002KO4XXE | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #126,183 in Automotive ( See Top 100 in Automotive ) #820 in Automotive Replacement Spark Plugs | | Brand | E3 | | Brand Name | E3 | | Compatible with Vehicle Type | ATV, Motorcycle, Snowmobile | | Core Material | Copper | | Customer Reviews | 4.5 out of 5 stars 710 Reviews | | Gap Size | 0.03 Inches | | Global Trade Identification Number | 00894489000381 | | Included Components | (1) Powersports Spark Plug | | Item Type Name | E3 Spark Plug E3.38 Powersports Spark Plug, Pack of 1 | | Manufacturer | E3 Spark Plugs | | Manufacturer Part Number | E3.38 | | Manufacturer Warranty Description | 90 Days | | Model Number | E3.38 | | OEM Equivalent Part Number | E3.38 | | Thread Size | 10mm | | Top Material Type | Alloy Steel | | UPC | 074994538887 753167308464 894489000381 | | Unit Count | 1.0 Count | | Vehicle Service Type | ATV, Motorcycle, Snowmobile | ## Product Details - **Brand:** E3 - **Core Material:** Copper - **Thread Size:** 10mm - **Top Material Type:** Alloy Steel - **Vehicle Service Type:** ATV, Motorcycle, Snowmobile ## Images ![E3 Spark Plugs E3.38 Premium Powersports Spark Plug with DiamondFIRE Technology, 10mm, 0.750” Reach, Gasket Seat, For Honda, Suzuki, Yamaha, and Other High RPM Engines, Pack of 1 - Image 1](https://m.media-amazon.com/images/I/51f5z0ttdUL.jpg) ![E3 Spark Plugs E3.38 Premium Powersports Spark Plug with DiamondFIRE Technology, 10mm, 0.750” Reach, Gasket Seat, For Honda, Suzuki, Yamaha, and Other High RPM Engines, Pack of 1 - Image 2](https://m.media-amazon.com/images/I/61FY0uykWCL.jpg) ![E3 Spark Plugs E3.38 Premium Powersports Spark Plug with DiamondFIRE Technology, 10mm, 0.750” Reach, Gasket Seat, For Honda, Suzuki, Yamaha, and Other High RPM Engines, Pack of 1 - Image 3](https://m.media-amazon.com/images/I/61nl-YverKL.jpg) ## Questions & Answers **Q: Will it fit a 2003 Suzuki Burgman 400?** A: I have same unit. It fits fine. Don’t forget to unscrew little cap on top of spark plug. WIRE ONLY FITS WHEN YOU UNSCREW THIS CAP AND THROW THAT AWAY. I love it when a girl swallows all the stuff. **Q: how many come in the box or is it 5$ a piece?** A: 5 per piece **Q: E3 website, autozone, and advance auto parts tell me the e3.38 is the correct plug for a 2004 yamaha r6. why does amazon say it's not?** A: Go on E3’s website, you can check your original plug with their replacement. That’s what I did to get the correct one. **Q: Will this spark plug work on my Tohatsu 50hp outboard motor. It's fully blue printed and i've been racing inflatble boats?** A: I put these plugs in my Victory motorcycle, and almost immediately replaced them. It ran considerably worse with them, which was a bit shocking. I can't recommend them at all. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect for the price *by A***R on May 1, 2026* Amazing spark plugs. After easily installing they have been working great. They were luckily compatible with my 03 Vulcan 800b fitting into the holes perfectly. They have allowed me to have smooth rides and continue to fix up the bike. ### ⭐⭐⭐⭐⭐ So far, I like them... *by T***R on July 5, 2020* Very interesting plug. I rebuilt an '01 KTM 400 EXC top to bottom. I usually run NGK CR8EIX plugs, and they work great. Since I re-jetted the bike, I figured I'd do a little experiment. I'm a maintenance freak, so my bike has always run at peak performance, but that requires constant maintenance, if you know anything about KTM's. Anyway, the plugs seem to work great. I haven't had the opportunity to switch back to compare with the NGK, but I will and will report back. Theoretically, the E3 plugs make sense. To be honest, before I run the NGK again, I'm going to buy another E3, because I'm not sure I'm even running the proper one for my KTM (even though I'm sure there would be little to no difference). ### ⭐⭐⭐⭐⭐ Spark plug *by M***5 on June 20, 2026* Fired my bike right up 👌🏿 ## Frequently Bought Together - E3 Spark Plugs E3.38 Premium Powersports Spark Plug w/DiamondFIRE Technology (Pack of 1) - K&N Motorcycle Oil Filter: High Performance, Premium, Designed to be used with Synthetic or Conventional Oils: Fits Select Honda, Kawasaki, Triumph, Yamaha Motorcycles, KN-204-1 - Valvoline 4-Stroke Motorcycle Full Synthetic SAE 10W-40 Motor Oil 1 QT --- ## 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.tw/products/7937316-e3-spark-plugs-e3-38-premium-powersports-spark-plug-diamondfire](https://www.desertcart.tw/products/7937316-e3-spark-plugs-e3-38-premium-powersports-spark-plug-diamondfire) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-08-02*