Fel-Pro 35987 Engine Water Pump O-Ring

Fel-Pro 35987 Engine Water Pump O-Ring

Fel-Pro 35987 is a premium black engine water pump O-ring built for sealing performance in cooling system service. It uses application-specific materials to help deliver vehicle-level sealing that professionals rely on for repair accuracy and durability.

Key Features

• Engine water pump O-ring for cooling system sealing
• Premium grade type for service-grade reliability
• Black color
• 0 mounting holes
• Fits select Cadillac and Pontiac applications, including DeVille, Seville, Eldorado, Allante, and Bonneville

Detailed Description

Fel-Pro 35987 is an engine water pump O-ring engineered for sealing the water pump interface in supported vehicles. Fel-Pro focuses on application-specific gasket materials to help maintain a dependable seal under cooling system conditions. This part cross-references MAHLE GS33433 for the same application. Fits 1994-2005 Cadillac DeVille, N/A; Fits 2004-2005 Pontiac Bonneville, N/A; Fits 1993-2004 Cadillac Seville, N/A; Fits 1993-2002 Cadillac Eldorado, N/A; Fits 1993 Cadillac Allante, N/A.

What It Helps Address

• Coolant seepage at the water pump sealing surface
• Loss of sealing integrity during water pump service
• Leak-related cooling system maintenance concerns
• Fitment issues when replacing a worn water pump O-ring

Installation Notes and Tips

Inspect the water pump sealing groove and mating surfaces before installation. Remove all old gasket material, coolant residue, and corrosion so the O-ring seats evenly. Verify the application by year, make, and model before assembly. Fits 1994-2005 Cadillac DeVille, N/A; Fits 2004-2005 Pontiac Bonneville, N/A; Fits 1993-2004 Cadillac Seville, N/A.

Quality Assurance

Fel-Pro gaskets are built around application-specific sealing materials and vehicle-focused fitment coverage. Part number 35987 is intended for supported Cadillac and Pontiac cooling system applications, including DeVille, Seville, Eldorado, Allante, and Bonneville models listed above.