Mahle W31180TC Transmission Oil Pan Gasket

Transmission Oil Pan Gasket for GM Applications

The Mahle W31180TC transmission oil pan gasket is built for dependable sealing in a range of GM passenger cars and vans from 1991-1999. It uses cork with a metal carrier to help maintain a stable seal at the transmission pan interface, where heat and fluid exposure can challenge older gaskets.

Compatible With 1991-1999 Buick Century, 1991-1999 Chevrolet Lumina, and 1991-1999 Pontiac Grand Prix applications, this gasket is a direct-fit sealing solution for service work on many front-wheel-drive GM platforms. The Mahle W31180TC is also cross-referenced to OE and aftermarket numbers used for the same application.

• Cork with metal carrier construction for transmission pan sealing
• Designed for GM vehicles across multiple 1991-1999 applications
• Direct replacement for service and repair work on listed fitments
• Mahle sealing product backed by OEM and technician trust
• Cross-references to select FEL-PRO, GM, and Rol part numbers

Detailed Product Overview

Mahle W31180TC is a transmission oil pan gasket intended for vehicles that require a cork-and-metal-carrier sealing design. This construction helps the gasket conform to the pan and case surfaces while providing added support during installation and service. It is a practical choice for maintaining a clean transmission pan seal on many Buick, Chevrolet, Oldsmobile, Pontiac, and Cadillac applications listed in the fitment data. This part cross-references FEL-PRO (e.g., TOS 18697, TOS 18717) for the same application.

Common Repair Uses

• Transmission fluid seepage at the pan rail
• Leak repair after transmission service
• Replacement of a hardened or compressed pan gasket
• Sealing issues caused by age, heat, or repeated removal
• Routine maintenance on listed GM vehicles such as Buick Century and Chevrolet Lumina

Installation Notes and Tips

Clean the pan, case flange, and bolt holes thoroughly before installation. Inspect the pan for distortion and verify that the sealing surfaces are flat before tightening fasteners evenly in sequence. Use the correct transmission fluid and confirm the pan bolts are torqued to the vehicle manufacturer’s specification. The W31180TC is listed for multiple GM models, including Buick Century, Chevrolet Lumina, and Pontiac Grand Prix, so confirm the exact year and application before service.

Quality Assurance

Mahle is known for sealing products used by OEMs and professional technicians worldwide. The W31180TC reflects that focus on consistent sealing performance for service applications across the listed GM fitments.