Corvette Central

245121

1997-2003 Corvette Thermostat Housing / Water Outlet Neck With Thermostat

Thermostats

LS1
Hi flow
187 degree
Stock
Factory GM/AC Delco Part

97-03 model water pumps have the thermostat as part of the thermostat housing, and is not removable (at least not by hand). This style uses a large O-ring to seal the housing to the pump. 2004-present water pumps have a thermostat that has a separate housing, and the thermostat easily slides out. The O-ring on this model is part of the thermostat. Another visual difference is in the casting. The 97-03 housings have an additional tab on it to hold the wiring in place for the A/C compressor. The 2004-present models do not have that tab. The housings are not interchangeable between pumps since the diameter of the thermostat cavity is different and the bolt pattern for the housing is different. NOTE: GM water pumps sold after 2005 all have the 2-piece design, meaning if you ordered a new GM water pump for your 1998 Corvette, it came with the newer 2-piece thermostat. Size: N/A
Corvette Central #: 245121
Original GM #: 12571261
Car years: 1997, 1998, 1999, 2000, 2001, 2002, 2003

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