Sierra 18-5911 Heavy-Duty Marine Starter for GM Engines

The Sierra 18-5911 is a heavy-duty, bottom mount marine starter designed specifically for GM engines. This SAE J1171 certified starter features 9-tooth clockwise rotation and is engineered for GM marine engines with 100-245 HP from 1970-1978. It's a 12-volt inboard starter with a bottom mount straight across bolt pattern, designed for engines with 12-3/4 inch flywheel.

Key Features:

• Assembled using high-quality corrosive resistant materials and sealed to prevent water intrusion and corrosion
• 9-tooth drive gear with clockwise (heavy-duty) rotation
• Bottom mount configuration with straight across bolt pattern for GM engines
• SAE J1171 marine certified construction
• No core charge required

OEM Cross-References:

• Mercury Marine: 50-808011A1, 50-17251A3, 50-99419A3, 50-99417A2, 50-76965A4, 50-77328A3
• OMC: 985966, 982121, 981078, 983444, 983790
• Chris Craft: 16.61-00042
• Volvo Penta: 834893-0, 855326-5
• Arco: 30460
• GLM: 74150

Sierra products meet or exceed original equipment specifications and are engineered to withstand the harsh marine environment. Compatible replacement solenoid is Sierra 18-5837.