Description
Suzuki 17670-90J21 50°C 122°F Thermostat DF100A-DF300AP
F Thermostat
The Suzuki 17670-90J21 thermostat is a genuine OEM 50°C water thermostat used in the cooling system on compatible Suzuki outboards. This thermostat helps regulate engine operating temperature by controlling coolant flow, making it an important service item during cooling system maintenance, water pump service, or temperature-related troubleshooting.
Key Features
- Genuine Suzuki OEM water thermostat
- Part number: 17670-90J21
- 50°C thermostat temperature rating
- Helps regulate outboard engine operating temperature
- Used in the engine cooling system
- Commonly inspected during water pump and cooling system service
- Replacement for worn, stuck, corroded, or temperature-related thermostat issues
Fitment
- Fits select Suzuki DF100A outboards
- Fits select Suzuki DF115A outboards
- Fits select Suzuki DF140A outboards
- Fits select Suzuki DF150 outboards
- Fits select Suzuki DF175 outboards
- Fits select Suzuki DF250AP outboards
- Fits select Suzuki DF300AP outboards
- Verify fitment by model, year, and serial number before ordering
Why You Should Buy
- OEM Suzuki part for proper fit and dependable cooling system operation
- Helps maintain the correct operating temperature on compatible Suzuki outboards
- Important replacement part when servicing the cooling system
- Good item to keep in stock for Suzuki outboard maintenance and repair
Common Applications
- Suzuki outboard thermostat replacement
- Cooling system maintenance
- Water pump service inspection
- Overheating diagnosis and repair
- Routine outboard service on compatible Suzuki models
FAQ
- What temperature is this thermostat? This Suzuki thermostat is rated at 50°C.
- Is this an OEM Suzuki part? Yes, this is a genuine Suzuki thermostat using part number 17670-90J21.
- Which engines does it fit? It fits select Suzuki DF100A, DF115A, DF140A, DF150, DF175, DF250AP, and DF300AP outboards. Always verify by model, year, and serial number before ordering.
- When should this thermostat be replaced? Replace it if it is stuck, corroded, damaged, or causing incorrect engine operating temperature.



