Motorad 421-180 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Chevrolet and Suzuki Vehicles

The Motorad Standard 421-180 engine coolant thermostat is designed to maintain optimal engine temperature for Chevrolet and Suzuki models including the Grand Vitara, Swift, SX4, SX4 Crossover, Tracker, and Vitara. This thermostat ensures efficient engine performance by regulating coolant flow at a precise 180°F opening temperature.

• Sealing flange outside diameter: 2.05 inches
• Height between flanges: 1.29 inches
• Overall height: 1.84 inches
• Standard type thermostat with jiggle pin weep hole
• Includes rubber gasket with O-ring seal for secure fit
• Flange thickness: 0.05 inches
• Start to open temperature: 180°F
• One seal included, gasket material: rubber

About the Motorad Standard Product Line

The Motorad Standard line offers dependable engine cooling components designed to meet OEM specifications. The 421-180 thermostat is part of this line, providing a balance of quality and compatibility for common Chevrolet and Suzuki vehicles. This ensures consistent temperature regulation and reliable sealing with included rubber gaskets and O-ring seals.

Product Details and Specifications

This engine coolant thermostat features a 2.05-inch sealing flange outside diameter and a 1.29-inch height between flanges, making it compatible with specific Chevrolet and Suzuki models. The thermostat opens at 180 degrees Fahrenheit, allowing coolant to flow and maintain engine temperature within optimal ranges. The jiggle pin weep hole helps prevent air pockets in the cooling system, improving overall efficiency. The included rubber gasket and O-ring seal provide a secure, leak-free installation.

Common Applications and Issues Addressed

• Regulates engine temperature to prevent overheating
• Prevents coolant leaks with reliable sealing flange and gasket
• Eliminates air pockets in the cooling system via jiggle pin weep hole
• Restores proper thermostat function in Chevrolet Grand Vitara and Suzuki SX4 models
• Maintains engine efficiency and prevents cold engine operation

Installation Notes and Tips

Installation of the Motorad Standard 421-180 thermostat requires removal of the old thermostat and cleaning of the housing surface to ensure proper sealing. The included rubber gasket and O-ring seal should be positioned carefully to avoid leaks. No special installation tool is included, so standard hand tools are sufficient. Verify the thermostat orientation and ensure the jiggle pin weep hole is positioned correctly to allow air venting.

Quality Assurance and Warranty

The Motorad Standard 421-180 thermostat is manufactured to meet industry standards for durability and performance. It includes a rubber gasket and O-ring seal to ensure a secure fit and leak prevention. While specific warranty details are not provided, Motorad products typically adhere to quality control processes to support reliable operation in Chevrolet and Suzuki vehicles.