AP03 Engine Flywheel Coupler For Mercruiser MCM 4.5L GM Drives

This direct-replacement coupler restores smooth power transfer between your Mercruiser drivetrain and Bravo drive assembly.

• Precise Fitment You will slide it onto the flywheel without wrestling with bent brackets on your MCM 4.5L or GM V-8 engine.
• OEM Cross Reference It swaps cleanly for factory codes like 18311A2 and 812964A2 whenever old metal grows loose.
• Round Profile The smooth circular body balances driving force evenly, which takes the rough shaking out of hard accelerations.
• Marine Reliability You trust firm engagement when leaving the dock, keeping your planing hull tracking true over wake or chop.