Motorad 267-180 Engine Coolant Thermostat

Engine Cooling Control for GM Applications

Motorad 267-180 is a standard engine coolant thermostat set to open at 180 degrees F. It is built with OEM-quality materials and OE-supplier manufacturing standards for consistent coolant flow control in demanding cooling systems. This thermostat is a direct-fit choice for many Chevrolet, GMC, Buick, Pontiac, Oldsmobile, Cadillac, and Saturn applications.

Key Features

• 180°F start-to-open temperature for stable engine warm-up and coolant regulation
• Copper case and wax compound for quick response to coolant temperature changes
• Offset design with air relief valve where applicable
• OEM-style seals included
• Rubber O-ring seal type for a secure sealing interface
• Motorad Standard line thermostat for OE-style replacement needs

Product Details

The Motorad Standard line focuses on OE-style cooling system service parts built to factory specifications and processes. Part number 267-180 uses a copper case and wax element to react quickly as coolant temperature rises and falls, helping the thermostat open at the specified 180°F point. With a sealing flange outside diameter of 1.8 in, height of 2.12 in, and a rubber O-ring seal, this thermostat is built for proper fit and sealing in supported GM cooling systems. This part cross-references Bosch 15898 for the same application.

Compatible With 1987-2009 Chevrolet Malibu, Impala, Monte Carlo, Lumina, Cavalier, Corsica, Celebrity, Express 3500, Silverado 2500 HD, Silverado 3500, Suburban 2500, Avalanche 2500, C2500, C3500, K2500, K3500, C2500 Suburban, K2500 Suburban, and P30; 1987-2009 GMC Sierra 2500 HD, Sierra 3500, Yukon XL 2500, Savana 3500, C2500, C3500, K2500, K3500, C2500 Suburban, K2500 Suburban, and P3500; 1987-2009 Buick Century, Regal, Skylark, Rendezvous, and Terraza; 1987-2009 Pontiac Grand Prix, Grand Am, Trans Sport, Aztek, Montana, Sunbird, 6000, Tempest, G6, and Torrent; 1987-2009 Oldsmobile Cutlass, Cutlass Supreme, Cutlass Ciera, Cutlass Cruiser, Achieva, Alero, Silhouette, and Firenza; 1987-2009 Chevrolet Equinox, Uplander, and Silverado 2500 HD Classic; 1987-2009 GMC Sierra 2500 HD Classic and Sierra 3500 Classic; 1987-2009 Saturn Relay; and 1987-2009 Cadillac Cimarron.

Common Cooling System Issues It Can Address

• Engine running too cool or taking too long to reach operating temperature
• Temperature swings caused by a thermostat that opens inconsistently
• Coolant flow control problems after thermostat wear or sticking
• Sealing issues at the thermostat housing interface
• Cooling system service needs on GM vehicles with 180°F thermostat specifications

Installation Notes and Tips

Verify the thermostat temperature rating and housing dimensions before installation. Clean the sealing surfaces thoroughly and inspect the housing, gasket land, and coolant condition before reassembly. The included seal should be seated evenly to prevent leaks, and the air relief feature should be oriented according to the vehicle’s thermostat housing design where applicable. Confirm the application against the vehicle’s engine configuration before service.

Quality Assurance

Motorad manufactures this thermostat to OEM specifications using OE-supplier processes and materials. The copper case, wax compound, and OEM-style sealing components are selected to meet the demands of automotive cooling systems while maintaining factory-style operation.