Sierra 18-6275-1 Marine Starter for GM V6 V8 Sterndrive Engines

The Sierra 18-6275-1 is a permanent magnet gear reduction marine starter designed specifically for late model GM engines. This bottom mount starter features a staggered bolt pattern and fits 1983 and newer GM V-6 and V-8 engines, as well as 1999 and newer MerCruiser 3.0L sterndrive engines with 14-inch flywheels. Compatible with Mercury Marine, BRP-OMC, and Volvo Penta applications.

Key Features:

• Re-engineered design to withstand harsh marine environments and resist water intrusion
• Improved solenoid design with lower pull-in current for maximum reliability, especially with weak batteries
• Superior connection between solenoid and commutator brushes for enhanced performance
• Upgraded planetary seal and robust clutch gear spring for extended lifespan
• Duckbill valve and relief cuts to remove moisture and prevent water accumulation
• Painted housing surface to prevent rust and corrosion
• 11-tooth starter drive gear with clockwise rotation
• SAE J1171 compliant

This starter replaces numerous OEM part numbers including MerCruiser 50-863007A1, OMC 3857747 and 3860566, and Volvo Penta 3857747, 3860566, and 3885317. Sierra's engineering upgrades help ensure reliable starting performance season after season.