ATP Parts JG-139 Transmission Oil Pan Gasket

OE-Style Transmission Pan Gasket Seal

ATP Parts JG-139 is a reusable OE-style automatic transmission oil pan gasket built for consistent sealing at the transmission pan rail. Its sandwich-style construction uses an inner metal rib with molded rubber on both sides to help maintain a secure seal on applications such as Chevrolet Silverado 2500 HD, GMC Sierra 3500 HD, and Cadillac CTS.

This transmission oil pan gasket is a direct-fit sealing component for select Chevrolet, GMC, Cadillac, and Camaro applications. The ATP JG-139 is engineered for service work where a reusable, OE-style gasket is preferred over a conventional cork or paper design.

• Reusable OE-style automatic transmission oil pan gasket
• Sandwich construction with an inner metal rib and molded rubber sealing surfaces
• Built for transmission pan sealing performance and consistent compression
• Direct replacement for select GM applications
• Part number: JG-139

Detailed Product Information

ATP Parts JG-139 is a transmission oil pan gasket designed around OE-style construction for a precise seal at the automatic transmission pan. The bonded, reusable design combines a metal core with molded rubber on both sides, helping the gasket retain shape and sealing force during service. This makes it a practical choice for transmission maintenance on vehicles including Chevrolet Express 2500, Chevrolet Silverado 3500 HD, and GMC Savana 3500.

This part cross-references GM OE numbers 24226850 and 24226880 for the same application. Use JG-139 when replacing a worn or leaking transmission pan gasket on compatible GM trucks, vans, and performance models.

Common Problems This Part Can Address

• Transmission fluid leaking from the oil pan gasket area
• Seepage after transmission service or fluid change
• Loss of sealing integrity from a flattened or damaged gasket
• Pan rail sealing issues caused by repeated heat cycling
• Need for an OE-style reusable transmission pan gasket

Installation Notes and Tips

Clean the transmission pan rail and mating surface thoroughly before installation. Inspect the pan for warping, dents, or damage that could affect sealing, and follow the vehicle service procedure for bolt tightening sequence and torque specification. Confirm the transmission application by year, make, and model before ordering.

Quality Assurance

ATP Parts manufactures OE-style sealing components for transmission service, and JG-139 is built to match the reusable bonded gasket design used on the listed applications. Compatible With 2007-2017 Chevrolet Silverado 2500 HD, 2007-2017 GMC Sierra 2500 HD, and other listed GM vehicles.

• Fits 2010-2017 Chevrolet Express 2500, N/A
• Fits 2010-2017 Chevrolet Express 3500, N/A
• Fits 2007-2017 Chevrolet Silverado 2500 HD, N/A
• Fits 2007-2017 Chevrolet Silverado 3500 HD, N/A
• Fits 2016-2017 Chevrolet Suburban 3500 HD, N/A
• Fits 2010-2017 GMC Savana 2500, N/A
• Fits 2010-2017 GMC Savana 3500, N/A
• Fits 2007-2017 GMC Sierra 2500 HD, N/A
• Fits 2007-2017 GMC Sierra 3500 HD, N/A
• Fits 2009-2015 Cadillac CTS, N/A
• Fits 2013-2015 Chevrolet Camaro, N/A
• Fits 2008-2013 Chevrolet Suburban 2500, N/A
• Fits 2008-2013 GMC Yukon XL 2500, N/A