---
product_id: 71226817
title: "Set of 8 Ignition Coils Brown boots DG521 and Motorcraft SP-509 Spark Plugs Compatible with Ford Expedition F-150 Super Duty F-250 F-350 F-450 F-550 F53 4.6L 5.4L C1659 DG521"
brand: "mas"
price: "KSh58932"
currency: KES
in_stock: true
reviews_count: 8
category: "Mas"
url: https://www.desertcart.co.ke/products/71226817-set-of-8-ignition-coils-brown-boots-dg521-and-motorcraft
store_origin: KE
region: Kenya
---

# High energy output High heat resistance Direct plug-and-play replacement Set of 8 Ignition Coils Brown boots DG521 and Motorcraft SP-509 Spark Plugs Compatible with Ford Expedition F-150 Super Duty F-250 F-350 F-450 F-550 F53 4.6L 5.4L C1659 DG521

**Brand:** mas
**Price:** KSh58932
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your Ford’s power with precision and durability — don’t get left in the cold!

## Quick Answers

- **What is this?** Set of 8 Ignition Coils Brown boots DG521 and Motorcraft SP-509 Spark Plugs Compatible with Ford Expedition F-150 Super Duty F-250 F-350 F-450 F-550 F53 4.6L 5.4L C1659 DG521 by mas
- **How much does it cost?** KSh58932 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/71226817-set-of-8-ignition-coils-brown-boots-dg521-and-motorcraft)

## Best For

- mas enthusiasts

## Why This Product

- Trusted mas brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Installation:** Plug-and-play design means you’re back on the road faster with zero hassle or modifications.
- • **Heat-Resistant Durability:** Brown boot coils withstand extreme engine heat, ensuring longer-lasting ignition under pressure.
- • **Trusted Warranty & Support:** Backed by a 1-year limited warranty and responsive customer service for peace of mind.
- • **Seamless Vehicle Compatibility:** Specifically designed for 2008-2014 Ford Expedition, F-150, Super Duty series, and more — no guesswork needed.
- • **Engineered for Peak Performance:** High-grade materials deliver reliable ignition and power boost for your Ford's 4.6L & 5.4L engines.

## Overview

The MAS Set of 8 Ignition Coils with Motorcraft SP-509 Spark Plugs offers a direct replacement solution tailored for Ford 4.6L and 5.4L engines from 2008-2014. Featuring high heat-resistant brown boots and high energy output, these coils ensure reliable ignition performance. Designed for easy plug-in installation and backed by a 1-year limited warranty, this set is ideal for Ford Expedition, F-150, Super Duty, and compatible models seeking durable, OEM-quality ignition components.

## Description

Buy MAS Set of 8 Ignition Coils Brown boots DG521 and Motorcraft SP-509 Spark Plugs Compatible with Ford Expedition F-150 Super Duty F-250 F-350 F-450 F-550 F53 4.6L 5.4L C1659 DG521: Coils - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Worked well the first time!!!!! Parts were great - Very happy with parts, all installed and works well
Review: Not Motorcraft coils! Read info. - Thought coils where motorcraft! That's on me for not reading the info on parts. I would not had purchased if I caught this! Already # 7 coil is having issues less than 1000 miles. China specials.. I will get motorcraft and reinstall. On time delivery !! King auto parts did reach out to resolve the issue, all is good tks for your support. Once again my issue, for not reviewing the parts before ordering.

## Features

- 【Important Notes】--Please check your original coil boots color before purchase. Because the manufactures of the vehicles changed their coils mid-year so your vehicle might need the DG521 (Brown boots) or DG511 (Black boots) Coils depending on what month the vehicle was made in. If you OEM coil is brown boots this is the one you need. If you OEM coil is Black boots, B0743LRJ7L that is the one you need.
- 【Direct Replacement】--The ignition coils are easy to install,it use the high grade materials,and each coil is design for specific application,high energy output.High heat resistant compound for our ignition coil on plug boot to withstanding heat stress for longer durability.
- 【Vehicle Fitment】--Replacement for 2009-2014 Ford Expedition,2008-2010 Ford Explorer,2008-2010 Ford Explorer Sport Trac,2008-2010 Ford F150,2008-2010 F250 Super Duty,2008-2010 F350 Super Duty,2008-2010 Ford Mustang,2008 Lincoln Mark LT,2008-2014 Lincoln Navigator,2008-2010 Mercury Mountaineer
- 【Compatible Part Numbers】--C1659, DG521, FD-509, 5C1716, 8L3Z-12029-A, C1659, GN10233, 5C1716, E509, 52-2071, IC697,SP509
- 【Warranty】--MAS Performance Ignition Coils With Motorcraft spark plugs SP509,made of high quality,one year limited warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BX7L9SF |
| Best Sellers Rank | #99,854 in Automotive ( See Top 100 in Automotive ) #201 in Automotive Replacement Ignition Coils |
| Brand | MAS |
| Brand Name | MAS |
| Compatible with Vehicle Type | fd 509 |
| Connector Gender | Female-to-Male |
| Customer Reviews | 4.3 out of 5 stars 509 Reviews |
| Installation Type | Plug In |
| Item Weight | 4 Pounds |
| Manufacturer | King Auto Parts |
| Part Interchange Info | replacement |
| UPC | 716253448499 |
| Vehicle Service Type | fd 509 |

## Product Details

- **Brand:** MAS
- **Vehicle Service Type:** fd 509
- **Item Weight:** 4 Pounds
- **Connector Gender:** Female-to-Male
- **Installation Type:** Plug In

## Images

![Set of 8 Ignition Coils Brown boots DG521 and Motorcraft SP-509 Spark Plugs Compatible with Ford Expedition F-150 Super Duty F-250 F-350 F-450 F-550 F53 4.6L 5.4L C1659 DG521 - Image 1](https://m.media-amazon.com/images/I/71PyrTbUfxL.jpg)

## Questions & Answers

**Q: Is there a warranty?**
A: One year limited warranty for replacement only.

**Q: What size socket size do i need**
A: These require a 7mm socket. be sure to get an extension or a deep well to have room to maneuver.

**Q: Are they double platinum ?**
A: Yes, for SP509 ,it is Double Platinum spark plug.

**Q: Anyone know if these plugs have any issues? I know 5.4 motors were bad. if you had an easy experience replacing olugs or a bad experience please respo**
A: They changed head design in mid 2008

So end of 2008 and newer they are fine and no worse than changing plugs on anything else. 

This is the updated design. Ford noted the new design by using brown coil boots. So you would have to pull one to find out if you have new or old style. 
Black boots is the 2 piece.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked well the first time!!!!! Parts were great
*by A***R on July 30, 2025*

Very happy with parts, all installed and works well

### ⭐⭐⭐⭐⭐ Not Motorcraft coils! Read info.
*by L***R on November 8, 2025*

Thought coils where motorcraft! That's on me for not reading the info on parts. I would not had purchased if I caught this! Already # 7 coil is having issues less than 1000 miles. China specials.. I will get motorcraft and reinstall. On time delivery !! King auto parts did reach out to resolve the issue, all is good tks for your support. Once again my issue, for not reviewing the parts before ordering.

### ⭐⭐⭐⭐⭐ Good quality
*by T***D on May 21, 2025*

These plugs and coils have worked without a problem for more than 2 years. Very happy with them. Gas mileage improved by 2 miles per gallon

## Frequently Bought Together

- MAS Set of 8 Ignition Coils Brown boots DG521 and Motorcraft SP-509 Spark Plugs Compatible with Ford Expedition F-150 Super Duty F-250 F-350 F-450 F-550 F53 4.6L 5.4L C1659 DG521
- 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
- LEXIVON 9/16-Inch Spark Plug Swivel Socket, 3/8" Drive x 6" Total Length | Enhanced Magnetic Design with Thin Wall Socket, Cr-v Steel (LX-SSPS9166)

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-03-02*