---
product_id: 505193009
title: "Ford Racing (M-12405-35T) 10-17 Flex 3.5L EcoBoost Cold Spark Plug Set"
brand: "ford"
price: "R3105"
currency: ZAR
in_stock: true
url: https://www.desertcart.co.za/products/505193009-ford-racing-m-12405-35t-10-17-flex-3-5l
store_origin: ZA
region: South Africa
---

# Precision cold spark tech Optimized combustion efficiency Exact fit for 10-17 Flex 3.5L EcoBoost Ford Racing (M-12405-35T) 10-17 Flex 3.5L EcoBoost Cold Spark Plug Set

**Brand:** ford
**Price:** R3105
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your EcoBoost’s true 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?** R3105 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/505193009-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

- • **Race-Ready Ignition:** Experience peak spark performance engineered by Ford Racing for your EcoBoost engine.
- • **Drive with Confidence:** Trust Ford Racing’s OEM quality to keep your vehicle running cooler, cleaner, and more powerfully.
- • **Perfect Fit Guarantee:** Designed specifically for 2010-2017 Flex 3.5L EcoBoost models to ensure seamless installation and optimal function.
- • **Durable Triple-Layer Design:** Innovative three-layer structure protects your engine’s interior while boosting reliability and longevity.
- • **Boost Your Ride’s Efficiency:** Enhance combustion for smoother acceleration and improved fuel economy—because every millisecond counts.

## Overview

The FordRacing M-12405-35T Cold Spark Plug Set is a high-performance ignition upgrade tailored for 2010-2017 Flex 3.5L EcoBoost engines. Featuring a durable three-layer design and exact vehicle-specific fitment, these spark plugs optimize combustion efficiency, improve fuel economy, and ensure reliable, race-inspired performance for your daily drive.

## 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 |
|---------------|-------|
| Manufacturer | Ford Racing |
| Brand | Ford |
| Model | Ford M-12405-35T |
| Product Dimensions | 27.31 x 11.43 x 11.43 cm; 381 g |
| Item model number | M-12405-35T |
| Exterior | Painted |
| Manufacturer part number | M-12405-35T |
| Item Weight | 381 g |

## Product Details

- **Brand:** Ford
- **Core material:** Copper
- **Thread size:** M14x1.25
- **Vehicle service type:** Car
- **Automotive Fit Type:** Universal Fit

## 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
- 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

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**Shop now:** [https://www.desertcart.co.za/products/505193009-ford-racing-m-12405-35t-10-17-flex-3-5l](https://www.desertcart.co.za/products/505193009-ford-racing-m-12405-35t-10-17-flex-3-5l)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-01-30*