Motorad 456-160 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Select GM and Isuzu Vehicles

The Motorad Standard 456-160 engine coolant thermostat is designed to maintain optimal engine temperature for a range of Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, and Saab models. Engineered with precise specifications, this thermostat ensures efficient coolant flow and temperature regulation at 160 degrees Fahrenheit.

• Sealing flange outside diameter: 2.13 inches
• Includes a rubber gasket for secure sealing
• Jiggle pin weep hole for air bleeding
• Bypass diameter of 1.46 inches and bypass length of 1.84 inches
• Flange thickness of 0.05 inches
• Single rubber seal included
• Temperature rating: 160°F

About the Motorad Standard Product Line

The Standard line from Motorad offers dependable replacement parts designed to meet original equipment specifications. The 456-160 thermostat is part of this line, providing consistent performance and fitment for various GM and Isuzu vehicles. This product line focuses on quality materials and precise engineering to ensure reliable engine temperature control.

Product Details and Specifications

This engine coolant thermostat features a 2.13-inch sealing flange outside diameter and a 0.05-inch flange thickness, ensuring a proper fit and seal within the cooling system. The included rubber gasket enhances sealing integrity, preventing leaks. The jiggle pin weep hole allows trapped air to escape, reducing the risk of overheating. With a bypass diameter of 1.46 inches and a bypass length of 1.84 inches, this thermostat supports proper coolant circulation during engine warm-up. It is rated to open at 160 degrees Fahrenheit, maintaining optimal engine operating temperature.

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
• Poor engine warm-up performance
• Coolant leaks from faulty seals
• Inconsistent engine temperature regulation
• Air trapped in cooling system causing hot spots

Installation Notes and Tips

Ensure the engine is cool before beginning installation. Remove the old thermostat and gasket completely, cleaning the mounting surface thoroughly. Install the new Motorad Standard 456-160 thermostat with the included rubber gasket to ensure a proper seal. Verify the jiggle pin is positioned correctly to allow air bleeding. No special installation tools are required, but follow vehicle-specific service manual instructions for torque specifications and procedures.

Quality Assurance and Warranty

Motorad Standard thermostats are manufactured to meet or exceed OEM standards, using quality materials such as durable rubber seals and precision-machined components. This thermostat is designed for reliable performance and longevity. Warranty details are provided by Motorad and may vary; consult product documentation for specific coverage information.