Gates 33601 Engine Coolant Thermostat Seal

Thermostat Seal for Heavy-Duty Cooling Systems

The Gates 33601 thermostat seal is a metal clad seal built to fit securely around the thermostat valve and help prevent coolant leakage. It is a direct-fit sealing component for service work on Dodge Ram 2500 and Dodge Ram 3500 cooling systems.

Gates Green Stripe Heavy-Duty Thermostat Seals are part of a product line focused on dependable sealing performance in demanding engine cooling applications. This thermostat seal supports a tight seal at the thermostat housing interface, helping maintain proper coolant control in service and repair work.

Key Features

• Brand: Gates
• Part number: 33601
• Part type: Engine coolant thermostat seal
• Style: Metal clad
• Inside diameter: 2.27 in.
• Outside diameter: 2.66 in.
• Height: 0.25 in.
• Fits 1994-2000 Dodge Ram 2500, N/A
• Fits 1994-2000 Dodge Ram 3500, N/A

Detailed Description

The Gates 33601 thermostat seal is specified for sealing around the thermostat valve to reduce the risk of coolant seepage at the thermostat assembly. Its metal clad construction supports a secure fit and consistent sealing surface in heavy-duty cooling system service. This part cross-references DENSO Auto Parts 5020 and Motorad S401 for the same application. For technicians and owners servicing Dodge Ram 2500 and Dodge Ram 3500 trucks, the 33601 offers a direct replacement option that matches the listed dimensions and application requirements.

Common Issues This Part Helps Address

• Coolant leakage at the thermostat valve or housing
• Seepage after thermostat service or replacement
• Loss of sealing integrity from a worn or flattened seal
• Cooling system maintenance on high-load Dodge Ram 2500 and Dodge Ram 3500 applications
• Improper thermostat sealing caused by an incorrect-size replacement part

Installation Notes and Tips

Verify thermostat housing dimensions before installation and compare the seal’s inside diameter, outside diameter, and height to the original part. Clean the sealing surfaces thoroughly so the metal clad seal seats evenly, and inspect the thermostat valve and housing for corrosion, pitting, or distortion before reassembly. Confirm application details for 1994-2000 Dodge Ram 2500 and 1994-2000 Dodge Ram 3500 models, since the listed position is N/A and the seal must match the thermostat assembly used on the vehicle.

Quality Assurance

Gates is a recognized name in engine cooling and sealing components, and the Green Stripe Heavy-Duty line is built for secure fitment around the thermostat valve in demanding service conditions. Part number 33601 is listed with defined dimensions and confirmed vehicle fitment for the applications shown.