Mahle C31853 Engine Coolant Pipe O-Ring

Mahle C31853 Engine Coolant Pipe O-Ring

Mahle C31853 is an OEM-standard engine coolant pipe O-ring made from molded rubber for dependable sealing in cooling system service. It is used on a wide range of GM, Saturn, Pontiac, Buick, Chevrolet, Saab, and Oldsmobile applications where a precise coolant seal is required.

Key Features

• Molded rubber gasket material for consistent sealing performance
• OEM Standard item grade for direct-fit replacement needs
• Engine coolant pipe O-ring for cooling system sealing service
• Mahle sealing product backed by OE-focused manufacturing standards
• Cross-reference: FEL-PRO 35346

Detailed Description

The Mahle C31853 coolant pipe O-ring is built for sealing engine coolant passages where a stable, leak-resistant fit is critical. Mahle is known for gasket and sealing products used by OEMs and technicians worldwide, and this part follows that OE-standard approach for service on vehicles such as the Chevrolet Equinox, GMC Terrain, Buick LaCrosse, and Chevrolet Malibu. If you are replacing a worn coolant pipe seal during thermostat or cooling system repair, Mahle C31853 provides the correct sealing profile for the application.

This part cross-references General Motors 90537379 for the same application.

What It Is Used For

• Coolant seepage at the engine coolant pipe connection
• Loss of seal integrity during thermostat housing or coolant pipe service
• Coolant odor or visible residue around the sealing joint
• Maintenance on GM, Saab, Saturn, Pontiac, Buick, and Chevrolet cooling systems
• Replacement of a hardened, flattened, or damaged coolant O-ring

Installation Notes and Tips

Clean the sealing surfaces thoroughly before installation and inspect the coolant pipe for corrosion, scoring, or deformation. Use the correct coolant and follow the vehicle service procedure for the specific application. For 2010-2017 Chevrolet Equinox and 2010-2017 GMC Terrain applications, the fitment notes specify using the included gasket from the thermostat seal set for optimal performance during installation of the engine coolant thermostat seal.

Compatible With 2000-2017 Chevrolet, Buick, GMC, Pontiac, Saturn, Saab, and Oldsmobile applications listed in the fitment data, including Chevrolet Equinox, GMC Terrain, Buick LaCrosse, Buick Regal, Buick Verano, Chevrolet Malibu, Chevrolet HHR, Saab 9-3, Pontiac G6, and Saturn Vue.

Quality Assurance

Mahle sealing products are supplied to OEM-level standards and are trusted in professional repair environments for cooling system sealing applications. Mahle C31853 is built as an OEM-standard replacement part for accurate fitment and reliable service.