Description
Mercury 8M0177662 Replacement Thermostat Assembly 7.6L V12 500-600HP
The Mercury 8M0177662 replacement thermostat assembly is designed for select Mercury 7.6L V12 600HP Verado and 500HP SeaPro outboards. This assembly helps regulate engine temperature to support proper operation and helps prevent damage that can occur from overheating. Built as a replacement thermostat assembly for supported V12 applications, it includes the main housing, thermostats, sealing components, and hardware needed for service.
Applications
Fits Mercury 7.6L V12 600HP Verado outboards.
Fits Mercury 7.6L V12 500HP SeaPro outboards.
The supplied application field lists serial number 3B060047 through 3B332192.
The supplied bullet lists serial number 3B060047 through 3B332191.
The supplied serial number ranges conflict by one ending serial number digit, so verify exact fitment by engine serial number before ordering.
Shipping
Ships as one Mercury 8M0177662 replacement thermostat assembly.
Key Facts
Brand: Mercury Precision
Part Number: 8M0177662
Product Type: Replacement Thermostat Assembly
Engine Family: Mercury 7.6L V12 outboards
Horsepower Range: 500-600HP
Verado Fitment: 600HP
SeaPro Fitment: 500HP
Application Serial Range: 3B060047 - 3B332192
Bullet Serial Range: 3B060047 - 3B332191
Function: Helps regulate engine temperature
Overheat Protection Role: Helps prevent damage that can occur from overheating
Country of Origin: MX
What’s Included
Included: Top housing
Included: Bottom housing
Included: 160F thermostat
Included: 140F thermostat
Included: Spring
Included: Retainer
Included: Gasket
Included: O-ring
Included: Plate
Included: Hardware
Service Notes
The supplied serial number ranges conflict slightly. The application field ends at 3B332192, while the bullet ends at 3B332191.
Verify exact fitment by engine family, horsepower, and serial number before ordering.
UPC: 678633140020
Packaged Length: 9 in.
Packaged Width: 6.1 in.
Packaged Height: 4.95 in.
Packaged Weight: 1.775 lbs.





