Automatic Transmission Side Cover Seal for GM Compact Cars

ATP Parts XG-3 is an exact-fit automatic transmission side cover seal for a wide range of GM and related compact cars and vans. It is built for valve body side cover service where a reliable cork and rubber sealing surface is needed to help maintain transmission fluid control.

Key Features

• Automatic transmission side cover seal for valve body side cover service
• Cork and rubber construction for a traditional sealing profile
• Exact-fit replacement from ATP Transmission Seals and Gaskets
• Fits a broad range of Chevrolet, Pontiac, Buick, Oldsmobile, Cadillac, and Isuzu applications
• Part number XG-3 for easy catalog matching

Detailed Description

ATP Parts XG-3 is an automatic transmission side cover seal made for valve body side cover applications across many 1980-2001 vehicles, including Chevrolet Cavalier, Pontiac Sunfire, Buick Century, and Pontiac Grand Am. This seal is intended for transmissions that use a cork and rubber side cover gasket profile, and it cross-references Pioneer Automotive Industries 749046 for the same application. Use XG-3 when servicing the transmission side cover on supported models and when an OE-style replacement seal is needed for a proper fit.

What This Seal Helps Address

• Transmission fluid seepage at the valve body side cover
• Leaks caused by a worn, flattened, or hardened gasket
• Poor sealing after side cover removal during transmission service
• Maintenance on older GM front-wheel-drive automatic transmissions
• Replacement needs on vehicles such as Chevrolet Cavalier, Pontiac Sunfire, and Buick Century

Installation Notes and Fitment

Fits 1982-2001 Chevrolet Cavalier, valve body side cover.

Fits 1995-2001 Pontiac Sunfire, valve body side cover.

Fits 1982-1996 Buick Century, valve body side cover.

Fits 1987-1996 Chevrolet Corsica, valve body side cover.

Fits 1982-1996 Oldsmobile Cutlass Ciera, valve body side cover.

Fits 1990-1996 Pontiac Trans Sport, valve body side cover.

Fits 1980-1995 Buick Skylark, valve body side cover.

Fits 1990-1995 Chevrolet Lumina APV, valve body side cover.

Fits 1992-1995 Oldsmobile Achieva, valve body side cover.

Fits 1985-1995 Pontiac Grand Am, valve body side cover.

Fits 1987-1994 Oldsmobile Cutlass Cruiser, valve body side cover.

Fits 1990-1994 Oldsmobile Silhouette, valve body side cover.

Fits 1986-1994 Pontiac Sunbird, valve body side cover.

Fits 1990-1993 Chevrolet Lumina, valve body side cover.

Fits 1990-1993 Oldsmobile Cutlass Supreme, valve body side cover.

Fits 1990-1993 Pontiac Grand Prix, valve body side cover.

Fits 1988-1993 Pontiac LeMans, valve body side cover.

Fits 1988-1991 Oldsmobile Cutlass Calais, valve body side cover.

Fits 1982-1991 Pontiac 6000, valve body side cover.

Fits 1987-1991 Pontiac Tempest, valve body side cover.

Fits 1982-1990 Chevrolet Celebrity, valve body side cover.

Fits 1982-1989 Buick Skyhawk, valve body side cover.

Fits 1989 Isuzu I-Mark, valve body side cover.

Fits 1982-1988 Cadillac Cimarron, valve body side cover.

Fits 1982-1988 Oldsmobile Firenza, valve body side cover.

Fits 1984-1988 Pontiac Fiero, valve body side cover.

Fits 1985-1987 Oldsmobile Calais, valve body side cover.

Fits 1984-1985 Chevrolet Citation II, valve body side cover.

Fits 1984-1985 Pontiac J2000 Sunbird, valve body side cover.

Fits 1980-1984 Oldsmobile Omega, valve body side cover.

Fits 1980-1984 Pontiac Phoenix, valve body side cover.

Fits 1980-1983 Chevrolet Citation, valve body side cover.

Fits 1982-1983 Pontiac J2000, valve body side cover.

Before installation, confirm transmission family and side cover style, especially on the 1989 Isuzu I-Mark, which is listed only for 3T40, THM125/M34, and THM125C applications. Clean the sealing surfaces thoroughly and inspect the cover for warpage or damage before assembly.

Quality Assurance

ATP Transmission Seals and Gaskets are positioned as exact-fit replacement parts, giving technicians and DIY service customers a direct replacement option for supported automatic transmission applications. Part number XG-3 is cataloged for broad interchange coverage across the listed GM and Isuzu vehicles.