Autotecnica GM0718523 Engine Coolant Thermostat Housing Assembly

Engine coolant thermostat housing assembly

This Autotecnica engine coolant thermostat housing assembly is built for direct replacement service on a wide range of GM and Isuzu applications. It combines the housing and thermostat function in one new assembly, with a gasket/O-ring seal and a jiggle pin weep hole for controlled coolant flow and easier air bleeding.

Key features

• New thermostat housing assembly for cooling system repair
• Includes thermostat and sealing components
• Gasket/O-ring seal type for a secure coolant interface
• Jiggle pin weep hole for air purge during filling
• 88°C start-to-open temperature specification
• 72 mm sealing flange outside diameter and 60 mm height between flanges

Detailed description

Autotecnica GM0718523 is an aftermarket engine coolant thermostat housing assembly engineered for vehicles that use a 72 mm sealing flange and an 88°C thermostat opening point. It is a new unit with the gasket or seal included, making it a practical replacement when the original housing is cracked, leaking, warped, or no longer regulating coolant flow correctly. This part cross-references Dorman OE Solutions (e.g., 902-2081, 902-2981) for the same application. Autotecnica GM0718523 is a fitment-focused solution for Chevrolet Silverado, GMC Sierra, and Cadillac Escalade cooling system service, along with other listed GM and Isuzu models.

What it is used for

• Stopping coolant leaks at the thermostat housing interface
• Restoring proper coolant temperature regulation
• Replacing a damaged or warped housing
• Addressing overheating caused by thermostat housing failure
• Repairing a worn seal or O-ring sealing surface

Installation notes and quality

Verify the 72 mm sealing flange outside diameter, 60 mm height between flanges, and 88°C opening temperature before installation. Confirm the application against the vehicle listing for Chevrolet Silverado, GMC Sierra, and Cadillac Escalade models, since fitment varies by year and platform. The jiggle pin weep hole should be oriented according to the vehicle’s cooling system layout during installation. Autotecnica manufactures this part under ISO/TS 16949 quality management specifications and backs it with a two-year, unlimited mileage warranty. Part number GM0718523 may also be referenced during catalog lookup and service verification.