Fel-Pro 35934 Engine Coolant Thermostat Housing O-Ring

Fel-Pro 35934 Engine Coolant Thermostat Housing O-Ring

Fel-Pro 35934 is a premium engine coolant thermostat housing O-ring built for sealing performance in Ford, Lincoln, and Mazda applications. It is made for vehicle-specific fitment and helps maintain a dependable coolant seal in engines used across the Explorer, F-150, Mustang, and other listed models.

Key Features

• Premium-grade thermostat housing O-ring for cooling system sealing
• Application-specific material selection for a precise fit
• Designed for 100% vehicle sealing in the intended application
• Mounting hole quantity: 0
• Cross-reference: MAHLE C32187
• Part number: 35934

Detailed Description

Fel-Pro 35934 is an engine coolant thermostat housing O-ring used to seal the thermostat housing connection and help keep coolant contained where it belongs. Fel-Pro uses application-specific sealing materials to match the demands of the engine and cooling system, supporting consistent sealing performance in vehicles such as the Ford Explorer, Ford F-150, Ford Mustang, Lincoln MKZ, and Mazda CX-9. This part number, 35934, is also referenced for related OE-style applications, making it a practical choice when replacing a worn or flattened thermostat housing seal.

What It Helps Solve

• Coolant seepage at the thermostat housing
• Visible coolant residue around the housing joint
• Loss of seal after thermostat service
• Sealing issues caused by an aged or compressed O-ring
• Cooling system leaks on Ford, Lincoln, and Mazda engines

Installation Notes and Tips

Inspect the thermostat housing and sealing surfaces before installation. Clean away old coolant residue, dirt, and gasket material so the O-ring can seat evenly. Verify the replacement matches the original application by year, make, and model before assembly. Compatible With 2007-2018 Ford Edge, 2007-2018 Lincoln MKX, 2007-2016 Lincoln MKZ, 2007-2015 Mazda CX-9, 2008-2019 Ford Taurus, 2008-2009 Ford Taurus X, 2008-2009 Mercury Sable, 2009-2013 Mazda 6, 2009-2016 Lincoln MKS, 2009-2019 Ford Flex, 2010-2012 Ford Fusion, 2010-2019 Lincoln MKT, 2011-2021 Ford Explorer, 2011-2021 Ford F-150, 2011-2021 Ford Mustang, 2015-2017 Ford Expedition, 2015-2017 Lincoln Navigator, 2015-2021 Ford Transit-150, 2015-2021 Ford Transit-250, 2015-2021 Ford Transit-350, 2015-2021 Ford Transit-350 HD, and 2017-2020 Lincoln Continental.

Quality Assurance

Fel-Pro gaskets are known for application-specific sealing solutions used by professionals. This part is built as a premium sealing component for the listed vehicle applications and is backed by Fel-Pro’s sealing-focused product engineering.