Push your McLaren’s performance to the next level with our Step Colder Spark Plugs. Specifically designed for the M838T & M840T engines, these plugs deliver maximum reliability under high boost and extreme heat conditions. By running one heat range colder than stock, they reduce the risk of pre-ignition and detonation, ensuring a safer and more efficient combustion process. Perfect for tuned or track-driven McLarens pushing beyond factory limits.
Product Details
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Fits: McLaren M838T & M840T engines (720S, 650S, 600LT, 765LT, etc.)
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Heat Range: 1 Step Colder – ideal for high boost & performance builds
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Benefits: Prevents pre-ignition/detonation, improves reliability under extreme load
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Application: Recommended for tuned and track-focused vehicles
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Set: Includes 8 spark plugs (complete engine set)
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Direct Replacement: OEM fitment – no modifications required
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