Motorad 416-203 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for Chrysler, Dodge, Jeep, and Ram

The Motorad Standard 416-203 engine coolant thermostat is designed to maintain optimal engine temperature for a range of Chrysler, Dodge, Jeep, and Ram vehicles. Engineered with precise temperature control and durable sealing components, this thermostat supports efficient engine cooling and performance.

• Start to open temperature: 203°F for accurate temperature regulation
• Sealing flange outside diameter: 2.5 inches for secure fitment
• Includes rubber gasket with O-ring seal for leak prevention
• Jiggle pin weep hole to prevent air lock and ensure coolant flow
• Bypass diameter of 1.38 inches and bypass length of 1.52 inches for proper coolant circulation
• Flange thickness of 0.05 inches and height between flanges of 1.6 inches
• Compatible with multiple Chrysler, Dodge, Jeep, and Ram models

About the Motorad Standard Product Line

The Motorad Standard line offers dependable engine cooling components designed to meet OEM specifications. This line focuses on providing quality thermostats with essential features such as reliable sealing and precise temperature activation. The 416-203 thermostat is part of this line, ensuring consistent performance and compatibility with a variety of vehicle models.

Product Details and Specifications

This engine coolant thermostat features a start to open temperature of 203 degrees Fahrenheit, ensuring the engine reaches optimal operating temperature efficiently. The thermostat includes a rubber gasket with an O-ring seal type to prevent coolant leaks and maintain system integrity. The jiggle pin weep hole allows trapped air to escape, reducing the risk of overheating. With a sealing flange outside diameter of 2.5 inches and a flange thickness of 0.05 inches, the thermostat fits securely within the cooling system housing. The bypass diameter and length (1.38 inches and 1.52 inches respectively) facilitate proper coolant flow during engine warm-up.

Compatible Vehicles and Applications

• Chrysler 300, Aspen, Magnum
• Dodge Challenger, Charger, Durango
• Jeep Commander, Grand Cherokee, Grand Cherokee L, Grand Wagoneer, Wrangler
• Ram 1500, 1500 Classic, 2500, 3500, 4000, Wagoneer

Common Issues Addressed by This Thermostat

• Engine overheating due to thermostat failure
• Coolant leaks caused by worn or damaged seals
• Poor engine temperature regulation affecting performance
• Air lock in cooling system leading to inefficient coolant flow
• Delayed engine warm-up impacting fuel efficiency

Installation Notes and Tips

Installation of the Motorad Standard 416-203 thermostat requires removal of the existing thermostat housing. Ensure the sealing surfaces are clean and free of debris before installing the new thermostat. The included rubber gasket with O-ring seal should be properly seated to prevent leaks. No special installation tools are included, so standard hand tools are sufficient. Verify the jiggle pin is oriented correctly to allow air to escape during coolant circulation.

Quality Assurance and Warranty

The Motorad Standard 416-203 thermostat is manufactured to meet industry standards for durability and performance. It includes a high-quality rubber gasket and O-ring seal to ensure a reliable, leak-free installation. While specific warranty details are not provided, Motorad products typically adhere to OEM quality requirements, supporting long-term engine cooling system reliability.