2018-26 Mustang Motorcraft Spark Plug Kit - Iridium 5.0 by Motorcraft

Price: 73.99 USD
Availability: InStock

2018-26 Mustang Motorcraft Spark Plug Kit - Iridium 5.0

Spark up your Coyote-powered 2018-2026 Mustang 5.0 engine with this Motorcraft OE spark plug kit!

Item #SP589K
MPN# SP589

Everyday Low Price: $73.99

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Benefits

Perfect for Routine Tune Up
Motorcraft Quality
Restores Ignition Performance

Features

14mm Thread Pattern
Iridium Electrode
Stock Heat Range

What's in the Box

(8) Motorcraft Spark Plugs

Motorcraft Spark Plug Kit - Iridium
Give your Coyote engine the spark it needs with this 2018-2026 Mustang 5.0 spark plug kit from Motorcraft! When it's time to replace the spark plugs in your S550 or S650 5.0, it is recommended that you use genuine Motorcraft replacement spark plugs. Motorcraft manufactures these plugs to OE standards with a robust body to withstand the rigors of daily driver applications. These plugs feature a copper core material with an Iridium alloy tip and the correct 14mm thread size. This kit includes eight Motorcraft spark plugs that arrive ready to gap and install! To be on the safe side, LMR recommends double-checking the gap on these spark plugs to ensure they are gapped to stock specifications.

Spark Plug Specs

Recommended Use: OEM replacement

Manufacturer Heat Range: Stock

Plug Thread: 14MM

Wrench Size: 5/8in

Electrode Tip Material: Iridium

Electrode Type: Projected
Motorcraft Part Number: SP589

Ford Motorcraft Warranty - Click Here

Ford Mustang - 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Engines: 5.0

How To Change Mustang Spark Plugs

Published 1/4/17
What Spark Plug Do I Need For My Mustang?

Published 2/24/22
2015-2025 Mustang Spark Plug Gap Specs

Published 8/13/25

California Residents:

WARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov

About This Brand

Ford Motor Company Genuine Parts, Motorcraft® Parts and Ford and Motorcraft Remanufactured Parts are all excellent choices when it comes to performance, longevity and value for your Mustang or SVT Lightning. And they’re all backed by a Ford Motor Company limited parts warranty*, so you know their parts you use are going to perform like they should. Put the same parts on your Lighting & Mustang that came from the factory! Shop LMR.com for Motorcraft oil, oil filters, friction modifier, spark plugs, and many other replacement maintenance items!