2011–2020 Ford F‑150 (Regular/Crew/Extended Cab; 5.0 L Coyote V8; RWD/4WD)
2011–2023 Ford Mustang GT (5.0 L Coyote V8; Fastback/Coupe/Convertible; RWD)
Fitment Notes
One heat‑range colder than OEM--designed for Coyote engines under forced induction or high rpm
Pre‑gapped to 0.035″ for boosted applications
Competition/off‑highway use only--installation may violate emission regulations for street-driven vehicles
Features
Iridium-tipped electrodes for consistent and reliable spark
Copper-core construction for enhanced conductivity
One heat‑range colder supports sustained high boost or rpm
Pre-gapped to optimal 0.035″ for performance use
Derived from Cobra Jet race engine tuning--race-proven design
Set of 8 plugs ensures full engine coverage
Ford Performance engineered--OEM-level quality
Backed by Ford Racing for competition durability
Specifications
Part Number: M‑12405‑M50A
Engine: 5.0 L Coyote V8
Thread Size: 14 mm
Spark Gap: 0.035″ (pre-set)
Tip Material: Iridium
Core Material: Copper
Quantity: 8 plugs
Included Components
8x Ford Performance cold-spark plugs (M‑12405‑M50A)
Product Description
The Ford Racing M‑12405‑M50A spark plug set is purpose-built for 5.0 L Coyote engines found in 2011–2020 F‑150s and 2011–2023 Mustang GTs. Precision-engineered one heat range colder than stock, these iridium-copper plugs are pre-gapped to 0.035″ and tuned for forced induction, nitrous, or high-rpm use--ensuring optimal combustion stability and preventing spark blowout under load.
Developed from Cobra Jet racing applications and Ford Performance supercharger kits, these plugs are a full set of eight, drop-in replacements for boosted or race Coyote builds. **Warning**: intended for competition or off-road use only--installation on public road vehicles may violate emissions regulations. Trust Ford Performance parts to deliver reliability and consistency in high-demand scenarios.
*Parts are for USA spec vehicles, please contact us to verify fitment on JDM & international models.
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· · · RETURNS · · ·
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Any returns received installed, mounted, used or missing components will be subject to return fee's.
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