How to Match This Part
This aftermarket coolant temperature alarm switch replaces Yanmar 127610-91350. It is a 95°C (203°F) switch for the engine alarm circuit on listed Yanmar marine diesel engines with freshwater / heat-exchanger cooling — not a variable sender for a dashboard temperature gauge.
Match this part in this order:
1. OEM number on the removed switch or in your parts catalog — Yanmar 127610-91350 (Recmar cross REC127610-91350)
2. Engine model code — on the engine identification plate (typically on the block or flywheel housing)
3. Cooling configuration — this 95°C switch is for freshwater / heat-exchanger cooled applications; raw-water cooled GM/HM engines often use a different lower-temperature switch
4. Physical form — threaded body with a single stud terminal (compare with the product images)
Do not order from engine family alone. Confirm 127610-91350 (or REC127610-91350), cooling type, and the physical switch against the removed part before installation.
- Primary OEM: 127610-91350
- Type: Coolant temperature alarm switch
- Switch point: 95°C (203°F)
