Mahle C31301 Engine Coolant Thermostat Seal

Engine Coolant Thermostat Seal for OE Fitment

Mahle C31301 is an OEM-standard engine coolant thermostat seal built with molded rubber for dependable sealing at the thermostat housing. It is a direct-fit sealing component for a wide range of GM and Isuzu applications, including Chevrolet Impala, Malibu, Equinox, and Pontiac Grand Prix models.

• Molded rubber gasket material for a precise sealing surface
• OEM Standard item grade for factory-style replacement
• Engine coolant thermostat seal for thermostat housing service
• Fits a broad range of Chevrolet, Buick, Pontiac, Saturn, GMC, Oldsmobile, and Isuzu vehicles
• Mahle sealing products are used by OEMs and technicians worldwide

Fitment Coverage

• Fits 2009-2011 Buick Lucerne, N/A
• Fits 2000-2011 Chevrolet Impala, N/A
• Fits 1997-2010 Chevrolet Malibu, N/A
• Fits 2005-2010 Pontiac G6, N/A
• Fits 2008-2010 Saturn Vue, N/A
• Fits 2005-2009 Chevrolet Equinox, N/A
• Fits 2006-2009 Pontiac Torrent, N/A
• Fits 2005-2008 Chevrolet Uplander, N/A
• Fits 2007-2008 Saturn Aura, N/A
• Fits 2002-2007 Buick Rendezvous, N/A
• Fits 2005-2007 Buick Terraza, N/A
• Fits 1995-2007 Chevrolet Monte Carlo, N/A
• Fits 2005-2007 Saturn Relay, N/A
• Fits 1999-2006 Pontiac Montana, N/A
• Fits 1994-2005 Buick Century, N/A
• Fits 2001-2005 Pontiac Aztek, N/A
• Fits 1994-2005 Pontiac Grand Am, N/A
• Fits 1999-2004 Oldsmobile Alero, N/A
• Fits 1996-2004 Oldsmobile Silhouette, N/A
• Fits 1994-2003 Chevrolet S10, N/A
• Fits 1994-2003 Pontiac Grand Prix, N/A
• Fits 1995-2001 Chevrolet Lumina, N/A
• Fits 1991-2000 Chevrolet C2500, N/A
• Fits 1991-2000 Chevrolet C3500, N/A
• Fits 1996-2000 Chevrolet Express 3500, N/A
• Fits 1991-2000 Chevrolet K2500, N/A
• Fits 1991-2000 Chevrolet K3500, N/A
• Fits 1991-2000 GMC C2500, N/A
• Fits 1991-2000 GMC C3500, N/A
• Fits 1991-2000 GMC K2500, N/A
• Fits 1991-2000 GMC K3500, N/A
• Fits 1996-2000 GMC Savana 3500, N/A
• Fits 1996-2000 Isuzu Hombre, N/A
• Fits 1992-1999 Chevrolet C2500 Suburban, N/A
• Fits 1992-1999 Chevrolet K2500 Suburban, N/A
• Fits 1991-1999 Chevrolet P30, N/A
• Fits 1992-1999 GMC C2500 Suburban, N/A
• Fits 1992-1999 GMC K2500 Suburban, N/A
• Fits 1991-1999 GMC P3500, N/A
• Fits 1997-1999 Oldsmobile Cutlass, N/A
• Fits 1996-1999 Pontiac Trans Sport, N/A
• Fits 1994-1998 Buick Skylark, N/A
• Fits 1994-1998 Oldsmobile Achieva, N/A
• Fits 1994-1997 GMC Sonoma, N/A
• Fits 1993-1997 Oldsmobile Cutlass Supreme, N/A
• Fits 1994-1996 Buick Regal, N/A
• Fits 1994-1996 Chevrolet Corsica, N/A
• Fits 1991-1996 Chevrolet G30, N/A
• Fits 1996 Chevrolet Lumina APV, N/A
• Fits 1991-1996 GMC G3500, N/A
• Fits 1994-1996 Oldsmobile Cutlass Ciera, N/A
• Fits 1991-1994 Isuzu Pickup, N/A
• Fits 1994 Oldsmobile Cutlass Cruiser, N/A
• Fits 1991-1993 Chevrolet C1500, N/A
• Fits 1991 Chevrolet R2500 Suburban, N/A
• Fits 1991 Chevrolet R3500, N/A
• Fits 1991 Chevrolet V3500, N/A
• Fits 1991 GMC R2500 Suburban, N/A
• Fits 1991 GMC R3500, N/A
• Fits 1991 GMC V3500, N/A

Detailed Description

Mahle C31301 is an OE-style engine coolant thermostat seal made to support a secure seal at the thermostat housing and help maintain proper coolant containment. The molded rubber construction is selected for sealing consistency, while the OEM Standard grade supports factory-style service on vehicles such as the Chevrolet Impala, Chevrolet Malibu, Pontiac Grand Prix, and Buick Century. This part cross-references FEL-PRO 35614 and General Motors 10226107 for the same application.

Common Repair Uses

• Thermostat housing coolant seepage
• Coolant leaks at the thermostat seal surface
• Service replacement during thermostat maintenance
• Sealing wear from age, heat, and coolant exposure
• Restoring a tight seal after cooling system repair

Installation Notes and Tips

Clean the sealing surfaces thoroughly before installation and inspect the thermostat housing for corrosion, pitting, or distortion. For optimal performance during installation of Engine Coolant Thermostat Seal, use the included gasket from the set. Verify vehicle application by year, make, and model before assembly, especially on Chevrolet Impala, Malibu, and Pontiac Grand Prix fitments.

Quality Assurance

Mahle sealing products are trusted by OEMs and technicians around the globe, and this seal is built to OEM Standard specifications for service replacement.