Dorman 45691 Engine Crankshaft Main Bearing Cap Bolt

Dorman 45691 Crankshaft Main Bearing Cap Bolt

Dorman 45691 is an engine crankshaft main bearing cap bolt made for direct replacement on select GM and Saab applications. Built from carbon steel with a black finish and 10x1.5 thread size, it matches the fit and function of the original hardware for service work on engines used in Chevrolet Colorado, GMC Canyon, and related platforms.

Key Features

• Carbon steel construction for strength in engine hardware applications
• Black finish for OE-style appearance
• 10x1.5 thread size for specified engine fitment
• Length: 5.24 in.
• Engine crankshaft main bearing cap bolt for specified vehicles
• Direct replacement part number 45691

Detailed Product Information

This Dorman crankshaft main bearing cap bolt is engineered to match the original part’s fit and function on specified vehicles. It is designed for engine hardware service where correct thread engagement, material strength, and dimensional accuracy matter. The part number 45691 is used across multiple applications, including Chevrolet Colorado, GMC Canyon, Hummer H3, Cadillac STS, and Buick Rainier platforms, making it a practical OE-style replacement for engine rebuild and repair work.

This part cross-references OE number 11569841 for the same application.

Vehicle Fitment

• Fits 2004-2012 Chevrolet Colorado, N/A
• Fits 2004-2012 GMC Canyon, N/A
• Fits 2006-2010 Hummer H3, N/A
• Fits 2009-2010 Hummer H3T, N/A
• Fits 2006-2009 Cadillac STS, N/A
• Fits 2006-2009 Cadillac XLR, N/A
• Fits 2002-2009 Chevrolet Trailblazer, N/A
• Fits 2002-2009 GMC Envoy, N/A
• Fits 2005-2009 Saab 9-7x, N/A
• Fits 2004-2007 Buick Rainier, N/A
• Fits 2002-2006 Chevrolet Trailblazer EXT, N/A
• Fits 2002-2006 GMC Envoy XL, N/A
• Fits 2004-2005 GMC Envoy XUV, N/A
• Fits 2002-2004 Oldsmobile Bravada, N/A

What It Helps Address

• Replacement of worn or damaged crankshaft main bearing cap hardware
• Engine rebuilds that require correct OE-style fastener dimensions
• Service repairs where thread size and bolt length must match factory specifications
• Restoration of proper main bearing cap retention during engine assembly
• Repair work on Chevrolet Colorado, GMC Canyon, and other listed GM applications

Installation Notes and Tips

Verify engine application, thread size, and bolt length before installation. Clean the mating surfaces and inspect the bearing cap and block threads for damage or contamination. Follow the vehicle service manual for tightening sequence and torque specifications, since crankshaft main bearing cap fasteners are critical engine hardware.

Quality Assurance

Dorman designs this replacement bolt to match original fit and function on specified vehicles and manufactures it from quality materials for reliable performance in engine service.