Sierra 18-5396 Mercruiser Distributor Cap V6 Thunderbolt Ignition Sierra high-quality engine parts are designed to meet OEM specifications. Includes gasket Fits GM V-6 engines with Thunderbolt IV V HEI Ignitions Interchangeable with GLM 71500 Mallory 9-29400 Mercruiser Stern Drive 815407A2 13753A2 11108A3 California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google Product Type Engine Parts Wiser Yes Product MPN 18-5396 Product UPC 030999319142 Fast Ship I