This aftermarket Mercury Marine Mariner Racing right-hand starter fits all 135, 150, 175, 200, 225, 245, 260, 280, and 300 Drag, 2-stroke V6 race outboards manufactured from 1978 to 2005; including all standard fishing and race right-hand (RH) rotating turning 2.0, 2.4, and 2.5 liters.
Mercury & Mariner V6 Outboard Starter – 8-Tooth Bendix, 96-Tooth Flywheel
This starter system is designed for Mercury and Mariner 135–225 H.P. V-6 outboard engines utilizing an 8-tooth starter Bendix gear paired with a 96-tooth flywheel ring gear, delivering a precise 12:1 gear ratio. Common replacement part numbers include Mercury OEM# 50-77141, 50-79472, 50-44415, and 50-893893. Compatible aftermarket replacements include Arco# 5380 and Sierra# 18-5608.
This setup ensures optimal starter engagement and performance on select mid-range V6 two-stroke Mercury and Mariner models. Ideal for marine engine repair and outboard starter replacement, this combination is not compatible with flywheels designed for 9-tooth starters.
Mercury & Mariner V6 Outboard Starter – 9-Tooth Bendix, 135-Tooth Flywheel
For Mercury and Mariner 150–225 H.P. V-6 outboard engines equipped with a 135-tooth flywheel ring gear, the correct starter uses a 9-tooth small drive gear, yielding a 15:1 gear ratio. This configuration is essential for proper engine starting torque and gear engagement.
OEM part numbers include Mercury# 50-86976, 50-856996T, and 50-898265013, while reliable aftermarket equivalents include Arco# 5381X. This 9-tooth starter system is specifically engineered for V6 models using the larger flywheel and should not be interchanged with 8-tooth systems.
Perfect for marine engine rebuilds, starter replacement, or high-performance outboard maintenance, this setup is a trusted solution in marine repair and parts replacement for late-model Mercury and Mariner V6 engines.
Mercury Outboard Starter – 10-Tooth Bendix, Tower of Power Inline-6 & V6 (90–200 HP)
This 10-tooth starter is built for Mercury outboards rated from 90 to 200 horsepower, specifically the legendary "Tower of Power" inline-6 and early V6 two-stroke engines. It features a 10-tooth starter drive gear paired with a 100-tooth flywheel ring gear, delivering a precise 10:1 gear ratio for efficient torque and reliable starting performance.
This unit replaces Mercury OEM# 50-72467 and 50-898265010, and is also available under Arco# 5377 and Sierra# 18-5636. Commonly found on late 1970s through early 1990s Mercury models, this starter is a dependable solution for marine engine replacement and classic outboard restoration.
Though it shares the 10-tooth gear spec with racing starters, it is specifically designed to work with the 100-tooth flywheel used on production motors, and is not interchangeable with high-performance or racing setups that use different gear ratios.
Our starters come with a one-year API Marine warranty. Always verify gear tooth count to ensure correct starter fitment and prevent mechanical issues.
Part Numbers
50-77141, 50-79472, 50-44415, 50-893893, 5380, 18-5608, 50-86976, 50-856996T, 50-898265013, 5381, 50-856996T, 50-79472, 86976, 5381-1
Includes one (1) Mercury outboard starter; select 8-tooth pinion starter drive gear (most common) or 9-tooth is available here on the drop-down.
Contact Mike Hill with any questions at +1-714-697-1716 or mike@buckshotracing77.com