160°F (71°C) Thermostat for MerCruiser V6/V8 Stern-Drive Engines – Replaces 8072522, 807252T2, 8052732 and 8M0091470
160°F (71°C) Thermostat for MerCruiser V6/V8 Stern-Drive Engines – Replaces 8072522, 807252T2, 8052732 and 8M0091470 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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160°F (71°C) Thermostat for MerCruiser V6/V8 Stern-Drive Engines – ...
160°F (71°C) Thermostat for MerCruiser V6/V8 Stern-Drive Engines – Replaces 8072522, 807252T2, 8052732 and 8M0091470 is backordered and will ship as soon as it is back in stock.
Product Details
This replacement 160°F (71°C) thermostat is designed for selected MerCruiser V6 and V8 stern-drive applications. It helps regulate engine temperature by opening at approximately 160°F (71°C), supporting proper cooling-system operation during normal use.
The thermostat is supplied as a single replacement component, not as a gasket or thermostat-housing kit. Confirm the temperature rating, thermostat configuration and engine serial range against your service manual before ordering.
- 160°F (71°C) opening temperature.
- For selected MerCruiser V6 and V8 stern-drive applications.
- Replacement references include 8072522, 807252T2, 8052732 and 8M0091470.
- Single thermostat supplied; housing components and gaskets are not included unless separately stated.
Part Number References
These numbers are provided for identification and cross-reference purposes. Always compare the original part and confirm fitment by engine model and serial number.
| Brand or Source | Part Number | Reference |
|---|---|---|
| Mercury/MerCruiser | 8072522 | Replacement reference |
| Mercury/MerCruiser | 807252T2 | Replacement reference |
| Mercury/MerCruiser | 8052732 | Replacement reference |
| Mercury/MerCruiser | 8M0091470 | Replacement reference |
| Aftermarket reference | 18-3649 | Thermostat reference |
Engine Compatibility
This thermostat is identified for MerCruiser V6 and V8 stern-drive applications. The available product information does not establish one universal year or serial-number range for every V6 and V8 model. MerCruiser cooling systems can vary by engine model, production period, closed or standard cooling configuration, and serial number.
Before purchase, compare the original thermostat, its temperature rating and the applicable engine parts diagram. If the engine model or serial range is not clearly confirmed, consult the engine service manual or a qualified marine technician.
Technical Specifications
- Product Type
- Thermostat
- Opening Temperature
- 160°F (71°C)
- Application
- Selected MerCruiser V6 and V8 stern-drive engines
- Product Format
- Single replacement component
- Installation
- Replacement installation; follow the engine manufacturer’s service procedure
What’s in the Box
- 1 × 160°F (71°C) thermostat
Thermostat housing parts, cover gaskets, housing gaskets, O-rings and other cooling-system components are not included.
Installation Notes
- Allow the engine to cool completely before starting work.
- Close or isolate the cooling-water supply as required by the engine service procedure.
- Locate the thermostat housing and remove the cover according to the service manual.
- Note the orientation of the original thermostat before removal.
- Remove the old thermostat and clean the sealing surfaces without damaging the housing.
- Install the replacement thermostat in the specified orientation.
- Install the correct new gasket or seal if required for your housing; gaskets are not included with this product.
- Reassemble the housing using the manufacturer’s specified torque sequence and torque values.
- Restore the cooling system, start the engine and inspect for leaks.
- Confirm that the engine reaches and maintains the expected operating temperature.
Troubleshooting & FAQ
How do I confirm that this thermostat is correct for my engine?
Confirm all of the following before ordering: MerCruiser V6 or V8 application, 160°F (71°C) temperature rating, matching thermostat configuration, and the correct model and serial-number range. The reference numbers 8072522, 807252T2, 8052732, 8M0091470 and 18-3649 can assist with identification but do not replace serial-number verification.
Is this a thermostat kit?
No. This listing is for one thermostat only. It is not a complete thermostat-housing or gasket kit.
Is a gasket included?
No gasket is included with the single thermostat. Use the correct new gasket or seal for your specific housing during installation.
What are common signs of a thermostat problem?
A thermostat that is stuck open may allow the engine to run cooler than intended or take too long to warm up. A thermostat that is stuck closed may cause rapid overheating. Temperature-gauge abnormalities, warning alarms or inconsistent operating temperature should be investigated promptly.
Can I use this thermostat in any V6 or V8 engine?
No. V6 and V8 descriptions alone do not confirm fitment. Check the engine model, cooling-system configuration and serial number against the service manual or parts diagram.
Safety & Important Information
- Work only on a completely cool engine and follow the manufacturer’s service instructions.
- Verify the original part, temperature rating and serial-number application before purchase.
- Do not operate the engine if the cooling system leaks or the temperature rises abnormally.
- Professional marine-service installation is recommended when the correct procedure or fitment is uncertain.
About Sea Sierra
- Marine Replacement Parts — Practical replacement components for common marine service needs.
- Application-Focused Information — Use part-number and engine-serial verification to select the correct component.
- Service Support — Follow the engine manufacturer’s procedures for safe installation and operation.
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