Dual-engine boats with counter-rotating props need a reverse-rotation distributor to keep timing correct, and marine ignition components need to survive constant vibration and moisture that would kill an automotive part. This one-piece DUI marine distributor is built specifically for that environment, with its coil and module sealed inside a single waterproof unit.

DUI M12720RRBL Marine Performance Distributor Features:

• Fits GM small block and big block V8 marine engines.
• Hall effect trigger with mechanical advance.
• Reverse rotation gear for counter-rotating dual-engine applications.
• Built-in 50,000-volt coil and high-dwell module; single 12-volt hot wire hookup.
• Blue cap.
• Sold individually.