Fel-Pro 35561 Engine Coolant Thermostat Housing Gasket

Fel-Pro 35561 Thermostat Housing Gasket

Fel-Pro 35561 is an engine coolant thermostat housing gasket built for a precise seal at the thermostat housing interface. It uses application-specific materials and a premium grade construction to support reliable coolant sealing in service.

Key Features

• Engine coolant thermostat housing gasket for sealing the thermostat housing to the engine or coolant outlet
• Inside diameter: 1.400 in. / 35.5 mm
• Thickness: 0.020 in. / 0.5 mm
• Mounting hole quantity: 4
• Premium grade type for service-focused sealing performance
• Fel-Pro sealing design built around vehicle-specific material selection

Detailed Description

Fel-Pro 35561 is made for buyers who need a thermostat housing gasket with the correct dimensions and sealing profile for coolant system service. The 1.400-inch inside diameter, 0.020-inch thickness, and four mounting holes help support a proper fit at the thermostat housing flange. This part number is commonly searched as Fel-Pro 35561 thermostat housing gasket and Fel-Pro 35561 engine coolant gasket for repair work that requires a dependable seal.

Fel-Pro gaskets are known for using application-specific materials to help maintain sealing integrity in demanding engine environments. For technicians and DIY repairs on vehicles such as Honda Civic and Toyota Corolla applications, this gasket supports a clean thermostat housing seal where coolant leaks can develop from age, heat cycling, or flange wear. This part cross-references 8920160 and C31542 for the same application.

What It Is Used For

• Stopping coolant seepage at the thermostat housing joint
• Replacing a flattened, brittle, or heat-damaged thermostat housing gasket
• Restoring a proper seal after thermostat service
• Addressing coolant odor or visible residue around the housing area
• Supporting repair of minor leaks that can lead to low coolant level warnings

Installation Notes and Tips

Clean both sealing surfaces thoroughly before installation and remove old gasket material, corrosion, and coolant residue. Verify flange flatness and align the gasket carefully with the four mounting holes before tightening the housing evenly to the manufacturer’s torque specification. Confirm the cooling system is properly filled and bled after service. Fits 2006-2011 Honda Civic, front. Fits 2009-2013 Toyota Corolla, front.

Quality Assurance

Fel-Pro sealing products are built with vehicle-specific materials and premium-grade construction to support consistent sealing performance in automotive cooling system repairs.