Motorad 309-180 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Dodge Ram 2500 and 3500

The Motorad Standard 309-180 engine coolant thermostat is designed to maintain optimal engine temperature for Dodge Ram 2500 and Ram 3500 models. Engineered to open at 180 degrees Fahrenheit, this thermostat ensures efficient coolant flow and engine performance.

• Sealing flange outside diameter: 2.5 inches
• Height between flanges: 1.47 inches
• Standard type thermostat with 2.1 inches overall height
• Bypass diameter of 1.09 inches and bypass length of 1.30 inches
• Flange thickness: 0.05 inches
• Start to open temperature: 180°F
• No gasket or seal included
• No jiggle pin weep hole
• Installation tool not included

Product Line Details: Motorad Standard

The Motorad Standard line offers dependable, OEM-quality replacement parts designed to meet factory specifications. The Standard engine coolant thermostat 309-180 provides consistent temperature regulation for Dodge Ram 2500 and 3500 engines, supporting reliable vehicle operation without additional features like jiggle pins or included seals.

Technical Description and Application

This engine coolant thermostat controls the flow of coolant based on engine temperature, opening at 180 degrees Fahrenheit to allow coolant circulation and prevent overheating. The 2.5-inch sealing flange diameter and 1.47-inch height between flanges ensure proper fitment within the cooling system housing. The bypass diameter and length facilitate controlled coolant flow during warm-up phases. Designed specifically for Dodge Ram 2500 and Ram 3500 models, part number 309-180 matches OEM specifications for seamless integration.

Common Issues Addressed by This Thermostat

• Engine overheating due to stuck-closed thermostat
• Poor engine warm-up from stuck-open thermostat
• Inconsistent cabin heating performance
• Coolant flow restrictions causing engine inefficiency
• Temperature regulation failures leading to engine damage

Installation Notes and Tips

• Ensure the cooling system is fully drained before removal
• Verify the sealing flange diameter and height match your vehicle’s housing
• Replace any worn gaskets or seals separately, as none are included
• Check for proper thermostat orientation during installation
• Bleed the cooling system after installation to remove air pockets

Quality Assurance and Warranty

The Motorad Standard 309-180 thermostat is manufactured to meet strict quality standards for durability and performance. While no specific warranty information is provided, Motorad parts typically conform to OEM requirements, ensuring reliable operation when installed correctly in compatible Dodge Ram 2500 and Ram 3500 vehicles.