Motorad 456-180 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Select GM and More

The Motorad Standard 456-180 engine coolant thermostat is designed to maintain optimal engine temperature for a range of vehicles including Buick, Cadillac, Chevrolet, GMC, and more. Engineered with precise specifications, this thermostat ensures efficient coolant flow and temperature regulation at 180 degrees Fahrenheit.

• Sealing flange outside diameter: 2.13 inches for secure fitment
• Includes a rubber gasket/seal for reliable sealing
• Jiggle pin weep hole to prevent air lock and ensure proper coolant circulation
• Bypass diameter of 1.46 inches and bypass length of 1.84 inches for controlled coolant flow
• Flange thickness of 0.05 inches for durability and proper mounting
• Single seal design included for effective sealing
• Temperature rating of 180°F to maintain engine operating temperature

About the Motorad Standard Product Line

The Motorad Standard line offers dependable replacement parts designed to meet original equipment specifications. The Standard series focuses on delivering consistent performance and fitment for a wide range of vehicles. The 456-180 thermostat is part of this line, providing a balance of quality and value for engine cooling system maintenance.

Product Details and Specifications

This engine coolant thermostat features a 2.13-inch sealing flange outside diameter that ensures a tight and secure fit within the cooling system housing. The included rubber gasket provides a reliable seal to prevent leaks. The jiggle pin weep hole is incorporated to allow trapped air to escape, reducing the risk of overheating due to air pockets. With a bypass diameter of 1.46 inches and a bypass length of 1.84 inches, this thermostat allows controlled coolant flow during engine warm-up phases. The flange thickness of 0.05 inches contributes to the part's structural integrity and proper installation. Designed to open at 180 degrees Fahrenheit, it helps maintain optimal engine temperature for efficient performance.

Compatible Vehicles and Applications

• Buick Allure, LaCrosse, Lucerne
• Cadillac CTS, Escalade, Escalade ESV, Escalade EXT
• Chevrolet Avalanche 1500, Camaro, Corvette, Express 1500/2500/3500, Impala, Monte Carlo, Silverado 1500/2500/3500, Suburban 1500/2500, Tahoe, Trailblazer, Trailblazer EXT
• GMC Envoy, Envoy XL, Envoy XUV, Sierra 1500/2500/3500, Yukon, Yukon XL 1500/2500
• Hummer H2
• Isuzu Ascender
• Pontiac G8, Grand Prix, GTO, Firebird
• Saab 9-7x

Common Issues Addressed by This Thermostat

• Engine overheating due to thermostat failure
• Coolant leaks from worn or damaged seals
• Poor engine warm-up performance
• Air pockets causing inefficient coolant circulation
• Inconsistent engine temperature regulation

Installation Notes and Tips

This thermostat does not include an installation tool, so ensure you have the proper tools for removal and installation. Before installing, verify the sealing flange and gasket surfaces are clean and free of debris. Replace the old gasket with the included rubber seal to prevent leaks. Confirm the jiggle pin is oriented correctly to allow air to escape during operation. Torque the housing bolts to manufacturer specifications to avoid warping or leaks.

Quality Assurance and Warranty

The Motorad Standard 456-180 thermostat is manufactured to meet or exceed OEM standards for fit and function. It includes a single rubber seal designed for durability and leak prevention. While specific warranty details are not provided, Motorad products typically undergo rigorous quality control to ensure reliable performance in compatible Buick, Cadillac, Chevrolet, GMC, and other vehicles.