Dorman 264-136 Engine Oil Pan

Engine Oil Pan Replacement for GM 4.2L Applications

Dorman 264-136 is a direct replacement engine oil pan engineered to match the original equipment pan on specific vehicle applications. Built from aluminum with a natural finish, it provides the correct fit and function for vehicles such as the Chevrolet Trailblazer, GMC Envoy, and Buick Rainier.

This Dorman 264-136 oil pan includes a drain plug and uses a center sump wet-sump design with a 5-quart capacity. It is shaped for OE-style mounting with 26 mounting holes and a 14 mm drain thread size, making it a practical replacement for a leaking or damaged factory pan.

Key Features

• Direct replacement engine oil pan for specific GM applications
• Aluminum construction with natural finish
• 5-quart capacity
• Center sump, wet-sump design
• Drain plug included
• 26 mounting holes for OE-style fitment
• Part number: 264-136

Detailed Product Information

When the original pan is cracked, corroded, or leaking at the gasket surface, this replacement oil pan restores the lower engine oil reservoir with the correct dimensions and mounting layout. The pan measures 28.25 inches long, 11 inches wide, and 8 inches deep, and it is built to match the OE configuration for the listed vehicles. This part cross-references Spectra Premium GMP64A for the same application.

Compatible With 2003-2009 Chevrolet Trailblazer, 2003-2009 GMC Envoy, 2004-2007 Buick Rainier, 2003-2006 Chevrolet Trailblazer EXT, 2003-2006 GMC Envoy XL, 2004-2005 GMC Envoy XUV, 2003-2004 Oldsmobile Bravada, 2003-2008 Isuzu Ascender, and 2005-2009 Saab 9-7x. Dorman 264-136 is a fit-focused replacement for these vehicle years and models.

Common Problems This Part Can Address

• Engine oil leaks from a damaged or corroded oil pan
• Stripped or worn drain plug threads
• Cracked pan housing from road impact or age
• Oil seepage at the pan sealing surface
• Replacement needs after removal during engine service

Installation Notes and Quality Assurance

Before installation, verify engine application, gasket or seal requirements, and drain plug thread size to ensure proper assembly. Transfer any required components not included with the pan, and inspect the sealing surface for debris or damage before tightening fasteners to specification. This part includes the oil pan only; gasket or seal, pickup, and installation hardware are not included.

Dorman designs this oil pan as an OE-style replacement for the listed applications, with fitment matched to the original pan layout for reliable service on Chevrolet Trailblazer, GMC Envoy, and related models.