---
product_id: 186808089
title: "Ford Racing (M-12405-35T) 10-17 Flex 3.5L EcoBoost Cold Spark Plug Set"
brand: "ford"
price: "€ 113.27"
currency: EUR
in_stock: true
url: https://www.desertcart.nl/products/186808089-ford-racing-m-12405-35t-10-17-flex-3-5l
store_origin: NL
region: Netherlands
---

# Copper Core for Optimal Conductivity Precision M14x1.25 Thread Size Vehicle-Specific Fit for Perfect Compatibility Ford Racing (M-12405-35T) 10-17 Flex 3.5L EcoBoost Cold Spark Plug Set

**Brand:** ford
**Price:** € 113.27
**Availability:** ✅ In Stock

## Summary

> 🔥 Ignite your drive 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?** € 113.27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/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

- • **Precision Fitment:** Custom-tailored for 2010-2017 Flex 3.5L EcoBoost engines—no guesswork, just perfect fit.
- • **Durable Copper Core:** Superior copper core ensures consistent spark and long-lasting ignition reliability.
- • **Lightweight & Compact:** At just 13.4 ounces, these plugs deliver power without adding bulk.
- • **Race-Ready Performance:** Engineered by Ford Racing to maximize your EcoBoost’s power and efficiency.
- • **Nickel-Topped Excellence:** Nickel top material resists corrosion, maintaining peak performance mile after mile.

## Overview

The Ford Racing M-12405-35T Cold Spark Plug Set is a vehicle-specific ignition upgrade designed for 2010-2017 Flex 3.5L EcoBoost engines. Featuring a copper core for superior conductivity, nickel top for corrosion resistance, and precision M14x1.25 threading, these plugs ensure optimal engine performance, reliability, and longevity.

## Description

Ford Racing (M-12405-35T) 10-17 Flex 3.5L EcoBoost Cold Spark Plug Set

## 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 |
|---------------|-------|
| Brand | Ford |
| Core Material | Copper |
| Thread Size | M14x1.25 |
| Top Material Type | Nickel |
| Vehicle Service Type | Car |
| Automotive Fit Type | Vehicle Specific Fit |
| UPC | 756122008324 |
| Manufacturer | Ford Racing |
| Model | Ford M-12405-35T |
| Item Weight | 13.4 ounces |
| Product Dimensions | 10.75 x 4.5 x 4.5 inches |
| Item model number | M-12405-35T |
| Is Discontinued By Manufacturer | No |
| Exterior | Painted |
| Manufacturer Part Number | M-12405-35T |

## 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/41pA04xuw5L.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
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- Motorcraft WR6135 Ignition Spark Plug Boot

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**Shop now:** [https://www.desertcart.nl/products/186808089-ford-racing-m-12405-35t-10-17-flex-3-5l](https://www.desertcart.nl/products/186808089-ford-racing-m-12405-35t-10-17-flex-3-5l)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-13*