EMP Thermostat part # 75-75521 is designed for select Mercury/Mariner 2, 2.5, 3.5, 4, 5 and 6 HP 4-stroke outboard engines. It replaces Mercury/MerCruiser part number 804540.
Fitment
- Mercury/Mariner 4-Stroke Outboards
- 2 HP
- 2.5 HP
- 3.5 HP
- 4 HP
- 5 HP
- 6 HP
Replaces / Cross-References
- Mercury/MerCruiser 804540
- Sierra 18-3638
- Tohatsu 3H6010300
Important: EMP does not publish a specific year range for this thermostat on the official product page. Verify your original part number and specific engine application before ordering.
Questions About This Product?
Have a question about this part or need help determining if it may work for your application? Email us at customerservice@marinepartswarehouse.com with your engine model and serial number, and our team will be happy to help with any information we have available.
