--- product_id: 342052474 title: "Autolite AR3933X Ar High Performance Racing Non-Resistor Spark Plug" brand: "autolite iridium ultra" price: "€ 39.92" currency: EUR in_stock: true url: https://www.desertcart.sk/products/342052474-autolite-ar3933x-ar-high-performance-racing-non-resistor-spark-plug store_origin: SK region: Slovakia --- # Cut background electrode for faster ignition Colder heat range for max performance Yttrium alloy cuts side wire temp by 8% Autolite AR3933X Ar High Performance Racing Non-Resistor Spark Plug **Brand:** autolite iridium ultra **Price:** € 39.92 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your engine’s true potential with Autolite AR3933X! ## Quick Answers - **What is this?** Autolite AR3933X Ar High Performance Racing Non-Resistor Spark Plug by autolite iridium ultra - **How much does it cost?** € 39.92 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/342052474-autolite-ar3933x-ar-high-performance-racing-non-resistor-spark-plug) ## 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 - • **Durability Boost:** Yttrium-enhanced alloy reduces side wire temperature by 8%, extending plug life - • **Ignition Speed Upgrade:** Cut background electrode accelerates flame kernel growth for quicker starts - • **Race-Proven Performance:** Trusted by professional drivers for peak track results - • **Advanced Heat Management:** Colder heat range designed to handle intense engine mods - • **Corrosion-Resistant Finish:** Nickel plating ensures long-lasting reliability under extreme conditions ## Overview The Autolite AR3933X is a high-performance racing spark plug engineered with a colder heat range and a Yttrium-enhanced alloy that reduces side wire temperature by up to 8%, improving durability and minimizing pre-ignition. Featuring a cut background electrode for faster ignition and a corrosion-resistant nickel plating, it’s the trusted choice of professional drivers seeking reliable, race-ready ignition performance. ## 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 and 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. ## 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 side wire temperature for improved durability and less pre-ignition ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | AUTOLITE | | Brand | Autolite Iridium Ultra | | Model | AR3933X-4PK | | Product Dimensions | 12.7 x 2.54 x 2.54 cm; 54.43 g | | Item model number | AR3933X-4PK | | Manufacturer Part Number | AR3933X-4PK | | Position | Center | | Item Weight | 54.4 g | ## Product Details - **Brand:** Autolite Iridium Ultra - **Core material:** Nickel - **Top material type:** Nickel - **Vehicle service type:** Car - **Global Trade Identification Number:** 00009100031099 ## Images ![Autolite AR3933X Ar High Performance Racing Non-Resistor Spark Plug - Image 1](https://m.media-amazon.com/images/I/71Bq-jTkqeL.jpg) ![Autolite AR3933X Ar High Performance Racing Non-Resistor Spark Plug - Image 2](https://m.media-amazon.com/images/I/81Qh3Rx2YFL.jpg) ![Autolite AR3933X Ar High Performance Racing Non-Resistor Spark Plug - Image 3](https://m.media-amazon.com/images/I/81qS1Ks6FcL.jpg) ![Autolite AR3933X Ar High Performance Racing Non-Resistor Spark Plug - Image 4](https://m.media-amazon.com/images/I/71Jo61loCbL.jpg) ![Autolite AR3933X Ar High Performance Racing Non-Resistor Spark Plug - Image 5](https://m.media-amazon.com/images/I/81C0GaELbSL.jpg) ## Questions & Answers **Q: Will this work on a predator 212?** A: No, they do not fit that model. **Q: Is this pack of 1 or 4?** A: These are sold in packs of 4. So if you need a total of 8 spark plugs, add a quantity of 2 to your cart. **Q: Are these the same as ar3910x?** A: The 3933 is the standard and the 3910 is the power tip. Not sure what the difference is. They are the same heat range. ## Frequently Bought Together - FRAM AR3933X-4PK Ar High Performance Racing Non-Resistor Spark Plug - Autolite-AR3910X Ar High Performance Racing Non-Resistor Spark Plug, 4-Pack --- ## 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.sk/products/342052474-autolite-ar3933x-ar-high-performance-racing-non-resistor-spark-plug](https://www.desertcart.sk/products/342052474-autolite-ar3933x-ar-high-performance-racing-non-resistor-spark-plug) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-05-26*