MSD 6M3L Marine Ignition Box Gas Filler Door 1967-1968 Buick Riviera

1967-1968 Buick Riviera

2015-2020 Subaru WRX

by virtually eliminating bushing deflection

GM Fullsize Truck 2014-18

Cross Pin GM 7

MSD 6M3L Marine Ignition Box Gas Filler Door 1967-1968 Buick RivieraUL Certified Shift interrupt feature eases shifting MSD's smoothest rev limiter yet, protecting parts and saving your engine Records highest RPM the engine turned for last 20 minutes of run time Easy setup of features with three rotary dials on the face of the unit Built in Start Retard adjustable in 0, 10 or 20 increments for quick, easy starts and extend starter life LED display shows rev limit, highest RMP turned, cylinder select, start retard,