Part Number: 8M0166297
If your outboard is starting to hesitate or crank slowly, the fix is usually straightforward—you need a starter that matches OEM specs, delivers consistent torque, and holds up in a marine environment. The Mercury MerCruiser 8M0166297 is built exactly for that role on modern four-stroke outboards.
Get dependable ignition every time you turn the key with the Mercury MerCruiser 8M0166297 Starter, a genuine OEM starter assembly engineered for Mercury four-stroke outboard engines. Built to factory specifications, this unit delivers strong, consistent cranking power and precise engagement for smooth, reliable starts in all conditions.
Designed as a direct replacement, the 8M0166297 ensures proper fitment and performance without modification. Its high-torque motor is built to handle modern EFI outboard compression, while marine-grade construction protects against corrosion, heat, and vibration—common challenges in real-world boating environments. As a factory Mercury Marine component, it’s designed to meet original equipment standards for durability and reliability .
This starter is widely used across Mercury 65–115HP four-stroke outboard platforms (2014 and newer), including multiple EFI configurations and cross-referenced part numbers like 8M0137769 and 8M0088064 .
Common Fitments
This starter is found on many boats powered by compatible Mercury outboards, including:
- Mercury 65HP, 75HP, 90HP, 100HP, and 115HP four-stroke EFI engines
- Boston Whaler 150 Montauk and 170 Montauk
- Tracker Pro Team 175 TXW and 190 TX
- Nitro Z17 and Z18 bass boats
- Sun Tracker Bass Buggy and Party Barge series
- Carolina Skiff 17 LS and 19 LS
Fitment can vary by engine serial number and production range, so confirming compatibility with part number 8M0166297 is recommended before ordering.
Key Features
- Genuine Mercury Marine OEM starter assembly
- High-torque design for reliable engine cranking
- Direct replacement for multiple Mercury part numbers
- Designed for 65–115HP four-stroke EFI outboards
- Marine-grade construction for long-term durability
If your engine is showing signs of slow cranking or inconsistent starts, the Mercury 8M0166297 starter restores the quick, reliable ignition your boat was built for—so you can focus on the water, not the engine.