High Performance Equipment and Marine Parts
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Part #: 18643A 7
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Fits MCM 3.0L (1999 & newer), GM V-6 & V-8 (305 & 350 cid) engines (1993 and newer). This coupler is used with the 14 inch flywheel. If you are unsure as to whether you have a 12-3/4 or 14 inch flywheel, measure the distance from the center of the driveshaft splines to the center of one of the mounting holes. The 14" couplers will have a radius of 6.32
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