--- product_id: 2043837 title: "E3 Spark Plugs E3.46 Premium Automotive Spark Plug with DiamondFIRE Technology, 14mm Thread, 0.750-Inch Reach, Gasket Seat, Resistor, Pack of 1" brand: "e3" price: "€ 21.84" currency: EUR in_stock: true url: https://www.desertcart.it/products/2043837-e3-spark-plugs-e3-46-premium-automotive-spark-plug-diamondfire store_origin: IT region: Italy --- # Up to 13% Fuel Efficiency Boost DiamondFIRE Side-Wire Tech 14mm Thread Precision E3 Spark Plugs E3.46 Premium Automotive Spark Plug with DiamondFIRE Technology, 14mm Thread, 0.750-Inch Reach, Gasket Seat, Resistor, Pack of 1 **Brand:** e3 **Price:** € 21.84 **Availability:** ✅ In Stock ## Summary > 💥 Ignite Your Classic Ride with Cutting-Edge Spark Power! ## Quick Answers - **What is this?** E3 Spark Plugs E3.46 Premium Automotive Spark Plug with DiamondFIRE Technology, 14mm Thread, 0.750-Inch Reach, Gasket Seat, Resistor, Pack of 1 by e3 - **How much does it cost?** € 21.84 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/2043837-e3-spark-plugs-e3-46-premium-automotive-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 - • **Eco-Friendly Performance:** Reduce emissions and carbon buildup while meeting modern environmental standards. - • **Classic Car Power Upgrade:** Revive vintage engines with up to 12% more power and smoother acceleration. - • **DiamondFIRE Combustion Edge:** Patented side-wire electrode ensures faster, cleaner, and more complete fuel burn. - • **Durability Meets Reliability:** Yttrium-enhanced alloy construction backed by a 5-year/100,000-mile warranty. - • **Perfect Fit for Domestic Classics:** 14mm thread and 0.750-inch reach tailored for 60s to 90s domestic vehicles. ## Overview The E3.46 Premium Spark Plug features patented DiamondFIRE technology with a unique side-wire electrode design that delivers up to 12% more power and 13% better fuel efficiency. Engineered for domestic vehicles from the 1960s to early 1990s, it reduces emissions and carbon buildup while ensuring long-lasting performance with a durable yttrium-enhanced alloy and a 5-year/100,000-mile warranty. ## Description Product Description The E3.46 automotive spark plug is engineered to provide enhanced performance for a wide variety of applications, particularly for vehicles from the 1960s to early 1990s, with a focus on imports. This 14mm, 0.750” reach plug with a gasket seat features E3’s patented DiamondFIRE technology, which secures the electrode to the shell with three legs, optimizing heat transfer and increasing turbulence within the cylinder. The result is improved engine efficiency, smoother acceleration, and faster starts. The unique DiamondFIRE side wire has been proven to boost power, reduce fuel consumption, and lower hydrocarbon emissions for long-term use, while the full-size center electrode ensures optimal performance. Features a fixed gap design that creates an edge-to-edge spark path, replenishing the spark zone with a fresh fuel/air charge, resulting in better combustion and exposing the flame front more directly to the piston head. These features collectively contribute to increased power output, reduced gasoline consumption, lower emissions, and a longer lifespan for the spark plug. Backed by a five-year or 100,000-mile warranty, ensuring reliable, long-lasting performance. Compatible with various applications, our automotive spark plug is a high-performance solution designed to meet the needs of classic vehicle owners, improving engine operation and reducing maintenance costs. desertcart.com ## Features - COMPATIBILITY WITH DOMESTIC VEHICLES: Perfect for a wide range of domestic applications, especially cars from the 60s to early 90s, offering a significant boost in power, fuel efficiency, and emission control for classic engines - DIAMONDFIRE TECHNOLOGY: Patented side-wire electrode design ensures faster, more complete combustion, optimizing engine efficiency, improving power output, and reducing harmful emissions - 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 - LONG-LASTING PERFORMANCE: Built with Yttrium-enhanced alloy for durability and pre-ignition prevention; backed by a 5-year/100,000-mile limited warranty for reliable, extended use without frequent replacements ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000BPQGSE | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #998,065 in Automotive ( See Top 100 in Automotive ) #5,001 in Automotive Replacement Spark Plugs | | Brand Name | E3 | | Compatible with Vehicle Type | Car | | Core Material | Copper | | Customer Reviews | 4.6 4.6 out of 5 stars (221) | | Gap Size | 0.04 inches | | Global Trade Identification Number | 00894489000466, 00894489000473 | | Included Components | (1) Automotive Spark Plug | | Item Type Name | Spark Plugs | | Item Weight | 22.68 g | | Manufacturer | E3 Spark Plugs | | Manufacturer Part Number | E3.46 | | Manufacturer Warranty Description | 5 Years or 100,000 miles parts | | Model Number | E3.46 | | Number of Items | 1 | | Number of Packs | 1 | | OEM Equivalent Part Number | E3.46 | | Thread Size | 14mm | | Top Material Type | Alloy Steel | | UPC | 894489000466 759173601957 894489000473 | | Unit Count | 1 Count | ## Product Details - **Brand:** E3 - **Core Material:** Copper - **Thread Size:** 14mm - **Top Material Type:** Alloy Steel - **Vehicle Service Type:** Car ## Images ![E3 Spark Plugs E3.46 Premium Automotive Spark Plug with DiamondFIRE Technology, 14mm Thread, 0.750-Inch Reach, Gasket Seat, Resistor, Pack of 1 - Image 1](https://m.media-amazon.com/images/I/41BJKw2p3cL.jpg) ## Frequently Bought Together - E3 Spark Plugs E3.46 Premium Automotive Spark Plug with DiamondFIRE Technology, 14mm Thread, 0.750-Inch Reach, Gasket Seat, Resistor, Pack of 1 - 140-3280 Air Filter Compatible with Onan Micro Quiet Generator Air Filter 3600 4000 48-2017 --- ## 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.it/products/2043837-e3-spark-plugs-e3-46-premium-automotive-spark-plug-diamondfire](https://www.desertcart.it/products/2043837-e3-spark-plugs-e3-46-premium-automotive-spark-plug-diamondfire) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-10-19*