Mahle K31803 Engine Water Pump Gasket

Mahle K31803 Engine Water Pump Gasket

Mahle K31803 is an OEM-standard engine water pump gasket made from molded rubber for a precise seal at the water pump interface. It is built for Ford E-350 Super Duty, F-250 Super Duty, F-350 Super Duty, and Excursion applications that require dependable coolant sealing.

Key Features

• OEM-standard engine water pump gasket for cooling system service
• Molded rubber construction for consistent sealing performance
• O-ring sizes included: ID 100mm, TK 3.55mm
• Additional package contents: none
• Direct replacement part number: K31803

Product Details

Mahle manufactures sealing components trusted by OEMs and technicians worldwide, and this water pump gasket follows that standard with a molded rubber design intended to maintain a secure coolant seal. The Mahle K31803 is a practical choice for cooling system repairs on Ford E-350 Super Duty, Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford Excursion models across the listed model years. This part cross-references FEL-PRO 35812 for the same application.

What This Gasket Helps Address

• Coolant seepage at the water pump mounting surface
• Loss of sealing integrity after water pump service
• Coolant leaks caused by worn or flattened gasket material
• Improper sealing during thermostat seal and water pump installation on select Ford applications
• Repeat cooling system service caused by an aging gasket interface

Installation Notes

• Fits 2004-2010 Ford E-350 Super Duty, N/A
• Fits 2004-2007 Ford F-250 Super Duty, N/A
• Fits 2004-2007 Ford F-350 Super Duty, N/A
• Fits 2004-2005 Ford E-350 Club Wagon, N/A
• Fits 2004-2005 Ford Excursion, N/A
• Fits 2003 Ford Excursion, N/A; molded rubber; from 9/22/03
• Fits 2003 Ford F-250 Super Duty, N/A; molded rubber; from 9/22/03
• Fits 2003 Ford F-350 Super Duty, N/A; molded rubber; from 9/22/03

For optimal performance during installation of the engine coolant thermostat seal, use the included gasket from the set where noted in the fitment data. Verify the water pump sealing surface is clean and free of old gasket material before assembly.

Quality Assurance

Mahle sealing products are supplied to OEM-level standards and are trusted by technicians for cooling system repairs. The K31803 is built as an OEM-standard replacement gasket for consistent fit and sealing performance.