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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
Recommended Fuse rating : 1100A
They are identical to the spark plugs a "weis" man would "tec"nically sell you for $400
We can upgrade you from the M838T or M840T Single File Calibration to our feature packed M838T or M840T M-Tuner Calibration Suite at anytime
M Engineering ECU calibrations are on the fastest 720s in the world
Upgraded from OEM
McLaren one step colder spark plugs (set of 8) inlet Recommended Fuse rating : 1100AThese spark plugs are one step colder, suitable for highly modified cars. These are not recommended for stock applications. They are identical to the spark plugs a "weis" man would "tec"nically sell you for $400, except we gap them correctly before sending them to you. Comes as a set of 8. Special order, may have a delayed ship time. The OEM spark plugs use a 14mm head, these spark plugs use a 16mm head.
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