MAS ignition coils with brown boots DG521 improve ignition reliability for Ford engines.
MAS SP509 spark plugs for Ford provide durable combustion and steady power.
MAS eight-coil set ready for complete ignition system replacement.
MAS Ford engine compatibility covers 4.6L and 5.4L V8 platforms.
MAS DG521 brown boots detail ensures accurate OEM replacement.
MAS high-heat resistant coil boots resist engine heat for longer life.
MAS ford Expedition coil image illustrates 2009-2014 fit for quick replacement.
MAS eight-coil set with SP509 plugs enables a full ignition upgrade.
MAS Expedition and F-Series replacement parts support reliable starts.
MAS ignition coils with brown boots DG521 improve ignition reliability for Ford engines.
MAS SP509 spark plugs for Ford provide durable combustion and steady power.
MAS eight-coil set ready for complete ignition system replacement.
MAS Ford engine compatibility covers 4.6L and 5.4L V8 platforms.
MAS DG521 brown boots detail ensures accurate OEM replacement.
MAS high-heat resistant coil boots resist engine heat for longer life.
MAS ford Expedition coil image illustrates 2009-2014 fit for quick replacement.
MAS eight-coil set with SP509 plugs enables a full ignition upgrade.
MAS Expedition and F-Series replacement parts support reliable starts.

MAS 8-Piece Ignition Coils with Brown Boots DG521 + SP509 Spark Plugs for Ford 4.6L/5.4L

Overview Introducing the MAS 8-piece ignition coil and spark plug kit, built for Ford 4.6L and 5.4L...
Vendor: MAS
Availability: In stock
£208.73
£208.73
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Subtotal: £208.73
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MAS ignition coils with brown boots DG521 improve ignition reliability for Ford engines.

MAS 8-Piece Ignition Coils with Brown Boots DG521 + SP509 Spark Plugs for Ford 4.6L/5.4L

£208.73
MAS ignition coils with brown boots DG521 improve ignition reliability for Ford engines.
MAS SP509 spark plugs for Ford provide durable combustion and steady power.
MAS eight-coil set ready for complete ignition system replacement.
MAS Ford engine compatibility covers 4.6L and 5.4L V8 platforms.
MAS DG521 brown boots detail ensures accurate OEM replacement.
MAS high-heat resistant coil boots resist engine heat for longer life.
MAS ford Expedition coil image illustrates 2009-2014 fit for quick replacement.
MAS eight-coil set with SP509 plugs enables a full ignition upgrade.
MAS Expedition and F-Series replacement parts support reliable starts.

MAS 8-Piece Ignition Coils with Brown Boots DG521 + SP509 Spark Plugs for Ford 4.6L/5.4L

£208.73
Description
Description
x

Overview

Introducing the MAS 8-piece ignition coil and spark plug kit, built for Ford 4.6L and 5.4L V8 engines. It pairs eight ignition coils with brown boots (DG521) with eight Motorcraft SP-509 spark plugs for a complete ignition refresh that can support reliable starts and steady power delivery.

Important compatibility note

Boot color can vary by production year. Some Ford ranges used brown boots while others used black boots. Check your original coil boot color before ordering to ensure the correct match. If your OEM boot is brown, this kit is the right choice; if it is black, you may need a DG511 variant.

What you get

  • Eight MAS ignition coils with brown boots DG521 ensure uniform fit and energy delivery
  • Eight SP-509 Motorcraft spark plugs included for a paired replacement

Key features and benefits

  • Direct replacement designed for quick installation with high energy output
  • Heat-resistant boot material helps withstand engine temperatures for longer life
  • Engineered for Ford vehicles with 4.6L and 5.4L V8 engines for reliable ignition
  • One year limited warranty adds peace of mind

Vehicle fitment

Compatible with a broad range of 2008-2014 Ford models and select Lincoln and Mercury vehicles, including Expedition, F-Series, Explorer, Mustang, Navigator, Mark LT, and Mountaineer.

Part numbers and compatibility

The kit aligns with multiple OEM references such as C1659, DG521, SP509, and 5C1716, helping confirm cross-compatibility during checkout.

Installation tips

Designed for a straightforward replacement, the kit supports typical DIY installation with common hand tools and should restore a reliable ignition sequence in everyday driving conditions.

FAQ

Q: Will this MAS set fit my Ford vehicle?

A: It fits many 2008-2014 Ford V8 models with 4.6L/5.4L engines; verify boot color and OEM part numbers for best match.

Q: What’s included in the MAS 8-piece set?

A: Eight ignition coils with brown boots DG521 plus eight SP509 Motorcraft spark plugs.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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