Alternator Belt – Fits Yanmar 1GM10 (Replaces 128170-77350) Sea Sierra Proper fitment depends on matching

Proper fitment depends on matching these details precisely

inspect the rubber O-ring for cracks

Remove the mounting bolts holding the old fuel pump to the engine block

Test run the engine on water

0L 4-Stroke 3850495

Alternator Belt – Fits Yanmar 1GM10 (Replaces 128170-77350) Sea Sierra Proper fitment depends on matchingProduct Details This aftermarket Alternator Belt Fits Yanmar 1GM10 Marine Diesel Engine (Replaces 128170 77350) is designed for single cylinder Yanmar 1GM10 marine diesel engines (9 HP, 4 stroke) manufactured between 1983 and 2009. It serves as the essential accessory belt driving the alternator and water pump. It directly replaces Yanmar part numbers 128170 77350 and 128170 77350E, as well as several aftermarket equivalents including Gates 6560MC,