--- product_id: 186808089 title: "Ford Racing (M-12405-35T) 10-17 Flex 3.5L EcoBoost Cold Spark Plug Set" brand: "ford" price: "459.63 DT" currency: TND in_stock: true category: "Ford" url: https://www.desertcart.tn/products/186808089-ford-racing-m-12405-35t-10-17-flex-3-5l store_origin: TN region: Tunisia --- # One heat range colder for peak performance Pre-gapped to .031 inches for instant installation Vehicle-specific fit for perfect compatibility Ford Racing (M-12405-35T) 10-17 Flex 3.5L EcoBoost Cold Spark Plug Set **Brand:** ford **Price:** 459.63 DT **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your EcoBoost’s potential with Ford Racing precision! ## Quick Answers - **What is this?** Ford Racing (M-12405-35T) 10-17 Flex 3.5L EcoBoost Cold Spark Plug Set by ford - **How much does it cost?** 459.63 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/186808089-ford-racing-m-12405-35t-10-17-flex-3-5l) ## Best For - ford enthusiasts ## Why This Product - Trusted ford brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Setup:** Pre-gapped to .031 inches, saving you time and guaranteeing optimal spark delivery - • **Precision Fitment:** Designed specifically for 2010-2017 3.5L EcoBoost engines to ensure flawless installation and performance - • **Durable Copper Core:** High-quality copper core ensures superior conductivity and long-lasting reliability under racing conditions - • **Race-Ready Heat Range:** Optimized one step colder than stock for enhanced engine efficiency and power - • **Trusted Ford Racing Quality:** Backed by Ford Racing’s engineering excellence and a solid manufacturer warranty for peace of mind ## Overview The Ford Racing M-12405-35T Cold Spark Plug Set is engineered for 2010-2017 3.5L EcoBoost engines, featuring a one heat range colder design for improved combustion efficiency. Sold as a set of six, these plugs come pre-gapped to .031 inches and utilize a copper core with nickel top material, ensuring reliable performance and easy installation. Perfect for enthusiasts seeking OEM-quality upgrades that boost power and durability. ## Description One Heat Range Colder Than Stock. Sold In A Set Of 6. Gapped To .031 in.. ## Features - Innovative three-layer structure engineered to protect the interior of your vehicle with style, safety, and comfort in your daily ride - Please reference the submodel information located on the far left within the Compatibility table under "Notes" - Many products require vehicle-specific fitment - View the Compatibility table to ensure the part fits your year, make, model and submodel ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07HW1T57N | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #46,938 in Automotive ( See Top 100 in Automotive ) #311 in Automotive Replacement Spark Plugs | | Brand Name | Ford | | Compatible with Vehicle Type | Car | | Core Material | Copper | | Customer Reviews | 4.6 4.6 out of 5 stars (336) | | Gap Size | 0.03 Inches | | Included Components | Spark Plugs | | Item Type Name | Spark Plugs | | Manufacturer | Ford Racing | | Manufacturer Part Number | M-12405-35T | | Manufacturer Warranty Description | Manufacturer Warranty | | Model Number | M-12405-35T | | OEM Equivalent Part Number | M-12405-35T | | Thread Size | M14x1.25 | | Top Material Type | Nickel | | UPC | 756122008324 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Ford - **Core Material:** Copper - **Thread Size:** M14x1.25 - **Top Material Type:** Nickel - **Vehicle Service Type:** Car ## Images ![Ford Racing (M-12405-35T) 10-17 Flex 3.5L EcoBoost Cold Spark Plug Set - Image 1](https://m.media-amazon.com/images/I/41JSp5SK3gL.jpg) ## Questions & Answers **Q: Will this work on a 2015 ford taurus sho 3.5l ecoboost?** A: Yes, I have them certainly installed in my 2015 Taurus SHO. They came gapped perfectly at .030 which is the latest recommendation for the 3.5 ecoboost. **Q: Are these already properly gapped ?** A: F150 ecoboost are supposed to be at 28 so always double check **Q: Will these fit my 2016 expedition with the 3.5 turbo eco boost? and will they come pre gapped?** A: Yea they will fit and noticed they are pre gapped to .28-.30 **Q: Are these the original sp542 ? Or the new replacement?** A: Yes these are the SP542 plugs. Ford discontinued the 542s and went with the performance version only now. The markings on the 542s and these plugs are exactly the same. ## Frequently Bought Together - Ford Racing (M-12405-35T) 10-17 Flex 3.5L EcoBoost Cold Spark Plug Set - Permatex 22058 Dielectric Tune-Up Grease, 3oz. - High Performance Dielectric Grease Used To Protect Terminals, Spark Plugs, Wiring And Other Electrical Connections Against Salt, Dirt, And Corrosion - Motorcraft WR6135 Ignition Spark Plug Boot --- ## 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.tn/products/186808089-ford-racing-m-12405-35t-10-17-flex-3-5l](https://www.desertcart.tn/products/186808089-ford-racing-m-12405-35t-10-17-flex-3-5l) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-14*