Suzuki Marine
/suzuki/products/17670-90j21-thermostat-wateTHERMOSTAT,WATE 17670-90J21
/suzuki/products/17670-90j21-thermostat-wate
$57.48$71.85
You save 20%($14.37)
-20%
In stock
Only 1 remaining
- Guaranteed fitment for 8 different models
- This is an OEM part manufactured by Suzuki Motors
- 30 day return policy
PartX Alternatives — This part: Best
Ratings provided by PartX™
| Product | Price | Rating | Comment |
|---|---|---|---|
| Suzuki Marine 17670-90J21 THERMOSTAT,WATE (viewing this product) Genuine OEM product | $59.30 In stock Only 1 remaining | Best | Factory OEM parts will always have a BEST rating unless there is substantial data to prove otherwise. |
| EMP 75-75510 Thermostat Aftermarket product | $33.99 In stock Only 2 remaining | Better | EMP has a default Better rating based on overall brand quality. Some products may have a Best rating however we don't yet have sufficient data to provide an exact rating for this particular product. |
| GLM Marine 13320 Thermostat (13320) Aftermarket product | $21.62 In stock 5+ in stock | Good | Taiwan-made unit with a thicker cast/machined-looking brass frame, steel spring, copper actuator, and rubber gasket. The construction and marking placement differ notably from the OEM-style stamped frame, so while it should function, it is not an OEM-equivalent build. |
| Recmar REC60V-12411-00 THERMOSTAT (REC60V-12411-00) Aftermarket product | $27.36 In stock Only 4 remaining | Good | Stamped "50 C," which does not match the OEM 60°C opening temperature and can change engine operating temperature (too cool running). While the metal cage/spring/gasket construction is broadly similar, the spec mismatch makes it a poor direct substitute for the OEM 60°C thermostat. |
Product Questions 0
Don't hesitate to ask a question. It will be answered by our support staff or a fellow boater.
3 Product Reviews
Chris Mcmahan — Jun 24, 2026
Engine: Suzuki 200 hp Shopping experience: Very good! Repair difficulty: Easy Repair time: 1 to 2 hours Repair symptoms: Maintenance, routine service Sorry, If I gave step by step instructions, it would take hours.
David Shepard — Nov 8, 2023
Shopping experience: Excellent online shopping experience and very fast delivery. Parts came as ordered. Thank you Repair difficulty: Easy Repair time: Less than 30 mins
Deb Ahrens — Jan 27, 2022
Parts Fitment
Please verify fitment before ordering.
| Brand | Product Line | Model | 2018 | Serial Range |
|---|---|---|---|---|
| Suzuki Marine | Four-Stroke Outboard | 100 | ||
| Suzuki Marine | Four-Stroke Outboard | 115 | ||
| Suzuki Marine | Four-Stroke Outboard | 140 | ||
| Suzuki Marine | Four-Stroke Outboard | 150 | ||
| Suzuki Marine | Four-Stroke Outboard | 175 | ||
| Suzuki Marine | Four-Stroke Outboard | 200 | ||
| Suzuki Marine | Four-Stroke Outboard | 250 | ||
| Suzuki Marine | Four-Stroke Outboard | 300 |
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Supersession Chain
| Name | SKU | Superseding SKU |
|---|---|---|
| THERMOSTAT,WATEViewing this product | 17670-90J21 | Current |
| THERMOSTAT,WATE | 17670-90J20 | 17670-90J21 |
Aftermarket Interchange
| Name | SKU | Price | Brand |
|---|---|---|---|
| Thermostat | 75-75510 | $33.99 | EMP |
| THERMOSTAT (REC60V-12411-00) | REC60V-12411-00 | $27.36 | Recmar |
| Thermostat (13320) | 13320 | $21.62 | GLM Marine |