--- product_id: 259821119 title: "Autolite Fram AR3923 High Performance Racing Resistor Spark Plug, Pack of 1" brand: "autolite iridium ultra" price: "NT$498" currency: TWD in_stock: true reviews_count: 5 category: "Autolite Iridium Ultra" url: https://www.desertcart.tw/products/259821119-autolite-fram-ar3923-high-performance-racing-resistor-spark-plug-pack store_origin: TW region: Taiwan --- # 8% cooler sidewire temp Colder heat range for mods Nickel anti-corrosion plating Autolite Fram AR3923 High Performance Racing Resistor Spark Plug, Pack of 1 **Brand:** autolite iridium ultra **Price:** NT$498 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your engine’s full potential with Autolite Racing Spark Plugs! ## Quick Answers - **What is this?** Autolite Fram AR3923 High Performance Racing Resistor Spark Plug, Pack of 1 by autolite iridium ultra - **How much does it cost?** NT$498 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/259821119-autolite-fram-ar3923-high-performance-racing-resistor-spark-plug-pack) ## Best For - autolite iridium ultra enthusiasts ## Why This Product - Trusted autolite iridium ultra brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Race-Proven Durability:** Trusted by professional drivers for peak performance under extreme conditions. - • **Yttrium-Enhanced Alloy:** Reduces sidewire temperature by up to 8%, minimizing pre-ignition and extending spark plug life. - • **Precision Ignition Boost:** Cut-back ground electrode improves flame kernel ignitability for faster, more reliable starts. - • **Optimized Heat Management:** Colder heat range design supports high-performance engine modifications without overheating. - • **Corrosion-Resistant Finish:** Nickel plating ensures long-lasting protection against rust and wear, keeping your engine firing strong. ## Overview The Autolite Fram AR3923 High Performance Racing Resistor Spark Plug is engineered for professional-grade racing and high-performance vehicles. Featuring a colder heat range and a yttrium-enhanced alloy, it reduces sidewire temperature by 8% to prevent pre-ignition and improve durability. Its cut-back ground electrode design enhances ignitability, while nickel plating provides superior corrosion resistance. Trusted by racers and built to exceed OEM standards, this spark plug delivers reliable ignition and long-lasting performance for modified and demanding engines. ## Description Autolite Racing Spark Plugs are used by many professional race car drivers. These spark plugs contain an Yttrium-Enhanced Alloy, which enables up to 8 percent reduction in side wire temperature for improved durability and less pre-ignition. Autolite racing plugs are available in colder heat ranges than most plug manufacturers to support modified engines and feature a cut background electrode for improved ignitibility and faster flame kernel growth. They are also nickel plated for a long-lasting, corrosion-resistant finish. Since its inception, the Autolite brand has provided the automotive aftermarket and Original Equipment manufacturers the highest quality ignition products. Autolite has been in operation for over 100 years and has produced more than 11 billion spark plugs and glow plugs. These plugs are specifically designed for each application to meet or exceed OE quality and performance. Autolite makes plugs for Japanese, European, and Korean cars as well as plugs for Lawn & Garden and Power Sports. As a leading supplier of spark plugs, the Autolite brand has the right ignition products for your application, regardless of make or model, import or domestic. Review: 05 vw gti 1.8t no issues and great product! - Used em in my 05 gti 1.8t high grade spark plug at affordable price. Highly recommend these plugs. Review: great spark plugs - we put the plugs in the race truck every year great plugs ## Features - Replacement racing spark plug used by many professional car drivers - Specifically designed with colder heat ranges than the factory plug to enable performance modifications and handle intense conditions - Contains an Yttrium-enhanced alloy to enable up to 8% reduction in sidewire temperature for improved durability and less pre-ignition - Features cut back ground electrode for improved ignitability of flame kernel - Coated in an anti-corrosive nickel plating to prevent rusting ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000CSNMWS | | Brand | Autolite Iridium Ultra | | Brand Name | Autolite Iridium Ultra | | Compatible with Vehicle Type | Car | | Core Material | Nickel | | Core material | Nickel | | Customer Reviews | 4.5 out of 5 stars 64 Reviews | | Global Trade Identification Number | 00009100026583 | | Item Weight | 45 g | | Manufacturer | FRAM | | Manufacturer Part Number | AR3923 | | Model Number | AR3923 | | Number of Items | 1 | | OEM Equivalent Part Number | AR3923 | | Thread Size | 14 mm | | Thread size | 14 mm | | Top Material Type | Nickel | | Top material type | Nickel | | UPC | 009100026583 | | Unit Count | 1.0 Count | | Vehicle service type | Car | ## Product Details - **Brand:** Autolite Iridium Ultra - **Core material:** Nickel - **Thread size:** 14mm - **Top material type:** Nickel - **Vehicle service type:** Car ## Images ![Autolite Fram AR3923 High Performance Racing Resistor Spark Plug, Pack of 1 - Image 1](https://m.media-amazon.com/images/I/71Bq-jTkqeL.jpg) ![Autolite Fram AR3923 High Performance Racing Resistor Spark Plug, Pack of 1 - Image 2](https://m.media-amazon.com/images/I/81Qh3Rx2YFL.jpg) ![Autolite Fram AR3923 High Performance Racing Resistor Spark Plug, Pack of 1 - Image 3](https://m.media-amazon.com/images/I/81qS1Ks6FcL.jpg) ![Autolite Fram AR3923 High Performance Racing Resistor Spark Plug, Pack of 1 - Image 4](https://m.media-amazon.com/images/I/71Jo61loCbL.jpg) ![Autolite Fram AR3923 High Performance Racing Resistor Spark Plug, Pack of 1 - Image 5](https://m.media-amazon.com/images/I/81C0GaELbSL.jpg) ## Available Options This product comes in different **Number Of Items** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 05 vw gti 1.8t no issues and great product! *by C***N on 3 March 2025* Used em in my 05 gti 1.8t high grade spark plug at affordable price. Highly recommend these plugs. ### ⭐⭐⭐⭐⭐ great spark plugs *by D***L on 28 December 2024* we put the plugs in the race truck every year great plugs ### ⭐⭐⭐⭐⭐ Preferred plug for SBF w AFR185s & 100 shot *by D***D on 6 May 2022* Recommended by AFR, run them with no issues on NX 100 shot gapped at .035. The cut back ground strap and nickel plating are nice. The nickel plating with just a little anti seize makes removal a non-issue from aluminum cylinder heads. Recommend grabbing them when the price is right, sometimes it’s same or better than the standard 392X Autolites. --- ## 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/259821119-autolite-fram-ar3923-high-performance-racing-resistor-spark-plug-pack](https://www.desertcart.tw/products/259821119-autolite-fram-ar3923-high-performance-racing-resistor-spark-plug-pack) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-08-13*