Motorad 5416-203 Engine Coolant Thermostat

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

The Motorad UltraStat 5416-203 engine coolant thermostat is designed to maintain optimal engine temperature for a range of Chrysler, Dodge, Jeep, and Ram vehicles. Engineered to precise specifications, this thermostat ensures efficient coolant flow and temperature regulation at 203 degrees Fahrenheit.

• Sealing flange outside diameter: 2.5 inches
• Includes a rubber gasket for secure sealing
• Jiggle pin weep hole for air and vapor release
• Bypass diameter of 1.38 inches for controlled coolant flow
• Flange thickness of 0.05 inches for proper fitment
• Single rubber seal included
• Temperature rating: 203°F

About the Motorad UltraStat Product Line

The UltraStat line by Motorad focuses on precision-engineered thermostats that meet or exceed OEM specifications. This product line emphasizes durability and accurate temperature control, making it suitable for demanding applications in Chrysler, Dodge, Jeep, and Ram vehicles. The 5416-203 thermostat is part of this line, offering reliable performance and consistent engine temperature management.

Detailed Product Description

The Motorad UltraStat 5416-203 thermostat features a 2.5-inch sealing flange outside diameter and a 0.05-inch flange thickness, ensuring a secure and proper fit within the engine cooling system. The included rubber gasket provides a tight seal to prevent leaks, while the jiggle pin weep hole allows trapped air and vapor to escape, reducing the risk of overheating. The 1.38-inch bypass diameter facilitates controlled coolant circulation when the thermostat is closed, helping maintain stable engine temperatures. Rated for 203 degrees Fahrenheit, this thermostat is engineered to open at the correct temperature to optimize engine performance and efficiency.

Compatible Vehicles and Applications

This engine coolant thermostat is compatible with a variety of Chrysler, Dodge, Jeep, and Ram models, including but not limited to:

• Chrysler 300 and Aspen
• Dodge Challenger, Charger, Durango, Magnum
• 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
• Poor engine warm-up times
• Coolant leaks from worn seals
• Inconsistent engine temperature regulation
• Air trapped in the cooling system causing hot spots

Installation Notes and Tips

Installation of the Motorad UltraStat 5416-203 thermostat requires removal of the old thermostat and housing. Ensure the sealing surfaces are clean and free of debris before installing the new thermostat and rubber gasket. The jiggle pin should be positioned correctly to allow air to escape. No special installation tool is included, so standard hand tools are sufficient. Verify proper torque on the housing bolts to avoid leaks.

Quality Assurance and Warranty

Motorad manufactures the UltraStat 5416-203 thermostat to meet strict quality standards. The part includes a durable rubber gasket and is tested for temperature accuracy and sealing performance. While specific warranty details are not provided, Motorad products typically come with manufacturer-backed quality assurance to support reliable operation in compatible Chrysler, Dodge, Jeep, and Ram vehicles.