--- product_id: 254171773 title: "Autolite Iridium XP Automotive Replacement Spark Plug, XP3924 (1 Pack)" brand: "autolite iridium ultra" price: "S$7" currency: SGD in_stock: true reviews_count: 5 category: "Autolite Iridium Ultra" url: https://www.desertcart.sg/products/254171773-autolite-iridium-xp-automotive-replacement-spark-plug-xp3924-1-pack store_origin: SG region: Singapore --- # Up to 100,000 miles extended change interval Platinum protected ground wire & V-trimmed electrode for optimal ignition 0.6mm finewire iridium tip for max fuel efficiency Autolite Iridium XP Automotive Replacement Spark Plug, XP3924 (1 Pack) **Brand:** autolite iridium ultra **Price:** S$7 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite Power, Slash Fuel Costs, Own the Road. ## Quick Answers - **What is this?** Autolite Iridium XP Automotive Replacement Spark Plug, XP3924 (1 Pack) by autolite iridium ultra - **How much does it cost?** S$7 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/254171773-autolite-iridium-xp-automotive-replacement-spark-plug-xp3924-1-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 - • **Trusted Legacy:** Backed by Autolite’s 80+ years of expertise and a limited lifetime warranty. - • **Precision Ignition:** 0.6mm finewire iridium tip with laser welding delivers razor-sharp spark focus. - • **Unmatched Longevity:** Engineered to last up to 100,000 miles—drive worry-free longer than ever. - • **Fuel-Savvy Performance:** Optimized ignitability means less fuel consumption and more miles per gallon. - • **Universal Fit & Efficiency:** Platinum ground wire and V-trimmed electrode ensure peak performance across all ignition systems. ## Overview The Autolite Iridium XP XP3924 spark plug is a high-performance automotive replacement designed for durability and efficiency. Featuring a 0.6mm finewire iridium center electrode with laser welding and a platinum-protected ground wire, it delivers superior ignitability and fuel economy. Built to last up to 100,000 miles, this spark plug fits all makes and models, backed by Autolite’s trusted legacy and a limited lifetime warranty. ## Description Autolite Iridium XP is designed and engineered in the USA, is one of the brand's most technologically advanced spark plugs ever. These spark plugs provide better durability and a more focused ignition for better overall ignitability and optimum performance. Autolite Iridium XP spark plugs function for all makes and models, both foreign and domestic, provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products. Consider upgrading to Autolite iridium XP spark plugs for increased performance. Autolite Iridium XP spark plugs are backed by an unmatched limited lifetime warranty. Review: This fits perfectly and fixed the misfiring in my old Toyota. These are a huge upgrade over the previous copper spark plugs that last only 30k miles. These are great quality Iridium plugs that can last over 100k miles and I put around 45k miles with these on for the past few years and they are still going strong. My engine has way more power now and pulls more compared to before with my old plugs. I got the horses restored. Review: good spark plugs. ## Features - EXTENDED CHANGE INTERVAL: The Autolite Iridium XP automotive replacement spark plug is engineered to last for up to 100,000 miles depending on engine type making it one of the most durable spark plugs on the market today - FUEL EFFICIENCY: These spark plugs utilize a 0.6mm finewire iridium centerwire tip design with laser welded technology for maximum fuel efficiency. Our finewire electrodes produce more focused and consistent ignitability resulting in less fuel consumption - OPTIMAL PERFORMANCE: This replacement iridium spark plug provides better durability and a more focused ignition for better overall ignitabilty and optimal performance - AUTOLITE ADVANTAGE: Autolite has been producing spark plugs since 1936 making it one of the most trusted and reliable brands for your OE replacement spark plug needs - CONSTRUCTION: Every iridium spark plug comes with a platinum protected ground wire for maximum efficiency in all ignition types including DIS systems and a V-trimmed ground electrode for improved ignitability ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000ET3XCY | | Best Sellers Rank | #81,549 in Automotive ( See Top 100 in Automotive ) #496 in Automotive Performance Spark Plugs | | Brand | Autolite Iridium Ultra | | Customer Reviews | 4.6 4.6 out of 5 stars (711) | | Date First Available | 3 August 2012 | | Exterior | Chrome | | Item Weight | 49.9 g | | Item model number | XP3924 | | Manufacturer | FRAM | | Manufacturer Part Number | XP3924 | | Model | XP3924 | | OEM Part Number | XP3924 | | Position | Center | | Product Dimensions | 2.54 x 2.54 x 8.59 cm; 49.9 g | | Special Features | Finewire design, Limited Lifetime Warranty | ## Product Details - **Brand:** Autolite Iridium Ultra - **Core material:** Iridium - **Thread size:** 12 mm - **Top material type:** Nickel - **Vehicle service type:** UTV ## Images ![Autolite Iridium XP Automotive Replacement Spark Plug, XP3924 (1 Pack) - Image 1](https://m.media-amazon.com/images/I/61dYhg-5lEL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***R on 24 December 2024* This fits perfectly and fixed the misfiring in my old Toyota. These are a huge upgrade over the previous copper spark plugs that last only 30k miles. These are great quality Iridium plugs that can last over 100k miles and I put around 45k miles with these on for the past few years and they are still going strong. My engine has way more power now and pulls more compared to before with my old plugs. I got the horses restored. ### ⭐⭐⭐⭐⭐ Review *by J***M on 19 December 2025* good spark plugs. ### ⭐⭐⭐⭐⭐ Review *by K***E on 25 September 2025* Excellent for. Performance of vehicle improved. Gap was preset and installed easily. ## Frequently Bought Together - Autolite Iridium XP Automotive Replacement Spark Plug, XP3924 (1 Pack) - HQPASFY Ignition Coil Pack 6pcs Compatible with Audi A4 A5 A6 Q5 Q7 R8 S4 S5 Volkswagen Touareg 3.0L 3.2L 4.2L 5.2L & More Replaces# 06E905115E, UF529, 06E905115F - LEXIVON 5/8" Swivel Magnetic Spark Plug Socket, 3/8" Drive x 10" Total Length | Enhanced Magnetic Design With Thin Wall Socket, Cr-v Steel (LX-122) --- ## 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.sg/products/254171773-autolite-iridium-xp-automotive-replacement-spark-plug-xp3924-1-pack](https://www.desertcart.sg/products/254171773-autolite-iridium-xp-automotive-replacement-spark-plug-xp3924-1-pack) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-07-07*