Dorman 45691 Engine Crankshaft Main Bearing Cap Bolt

Name: Dorman 45691 Engine Crankshaft Main Bearing Cap Bolt
Brand: Dorman
SKU: BCZF-45691
Price: 71.48 USD
Availability: InStock

N/A

91 vehicles fit this part

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OE Direct Replacement — Bolt-on fit, no modifications needed

Fitment: Chevrolet, GMC, Hummer, Cadillac, Saab, Buick, and Oldsmobile, Colorado, Canyon, H3, H3T, STS, XLR, Trailblazer, Envoy, 9-7x, Rainier, Trailblazer EXT, Envoy XL, Envoy XUV, and Bravada

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Not what you need? See all Engine Crankshaft Main Bearing Cap Bolt options

Durable Engine Crankshaft Main Bearing Cap Bolt for Select GM Vehicles

The Dorman 45691 engine crankshaft main bearing cap bolt is engineered to provide reliable fastening for your engine's main bearing caps. Designed specifically for various Buick, Cadillac, Chevrolet, GMC, Hummer, Oldsmobile, and Saab models, this carbon steel bolt ensures secure and consistent performance.

Constructed from high-strength carbon steel for durability
Thread size of 10x1.5 for precise fitment
Length of 5.24 inches to match OEM specifications
Finished in black for corrosion resistance
Includes one complete engine bearing bolt set

Technical Details and Compatibility

The Dorman 45691 crankshaft main bearing cap bolt is designed to meet the exacting standards required for engine hardware. Its 5.24-inch length and 10x1.5 thread size make it compatible with a range of GM vehicles, including Buick Rainier, Cadillac STS, Chevrolet Trailblazer and Trailblazer EXT, GMC Canyon and Envoy series, Hummer H3 and H3T, Oldsmobile Bravada, and Saab 9-7x. The black carbon steel construction offers strength and resistance to wear, ensuring the bolt maintains proper clamping force under engine operating conditions.

Applications and Problem Resolution

Secures main bearing caps to maintain crankshaft alignment
Replaces worn or damaged bearing cap bolts to prevent engine vibration
Addresses issues related to engine noise caused by loose or failing bolts
Prevents potential engine damage from improper bearing cap torque
Supports engine rebuilds and maintenance on compatible GM models

Installation Notes and Tips

Ensure bolts are torqued to manufacturer specifications to avoid over-tightening
Use proper thread lubricant or anti-seize compound as recommended
Inspect mating surfaces for cleanliness before installation
Replace all main bearing cap bolts as a set to maintain uniform clamping force
Consult vehicle service manual for detailed torque sequence and specifications

Quality Assurance and Warranty

Dorman manufactures the 45691 crankshaft main bearing cap bolt to meet or exceed OEM standards for material and dimensional accuracy. The carbon steel construction undergoes quality checks to ensure durability and fitment. While specific warranty details are not provided, Dorman parts typically come with a limited warranty against defects in material and workmanship.

Brand	Dorman
Part Number	45691
Color	Black
Length	5.24
Material	Carbon Steel
Package Contents	1 Engine Bearing Bolt Set
Thread Size	10x1.5

This part fits 91 vehicles. Search below:

Year	Make	Model	Liters	Cylinders	Position
2012	Chevrolet	Colorado	3.7L	L5	N/A
2012	Chevrolet	Colorado	2.9L	L4	N/A
2012	GMC	Canyon	3.7L	L5	N/A
2012	GMC	Canyon	2.9L	L4	N/A
2011	Chevrolet	Colorado	3.7L	L5	N/A
2011	Chevrolet	Colorado	2.9L	L4	N/A
2011	GMC	Canyon	3.7L	L5	N/A
2011	GMC	Canyon	2.9L	L4	N/A
2010	Chevrolet	Colorado	3.7L	L5	N/A
2010	Chevrolet	Colorado	2.9L	L4	N/A
2010	GMC	Canyon	3.7L	L5	N/A
2010	GMC	Canyon	2.9L	L4	N/A
2010	Hummer	H3	3.7L	L5	N/A
2010	Hummer	H3T	3.7L	L5	N/A
2009	Cadillac	STS	4.4L	V8	N/A
2009	Cadillac	XLR	4.4L	V8	N/A
2009	Chevrolet	Colorado	3.7L	L5	N/A
2009	Chevrolet	Colorado	2.9L	L4	N/A
2009	Chevrolet	Trailblazer	4.2L	L6	N/A
2009	GMC	Canyon	3.7L	L5	N/A
2009	GMC	Canyon	2.9L	L4	N/A
2009	GMC	Envoy	4.2L	L6	N/A
2009	Hummer	H3	3.7L	L5	N/A
2009	Hummer	H3T	3.7L	L5	N/A
2009	Saab	9-7x	4.2L	L6	N/A
2008	Cadillac	STS	4.4L	V8	N/A
2008	Cadillac	XLR	4.4L	V8	N/A
2008	Chevrolet	Colorado	3.7L	L5	N/A
2008	Chevrolet	Colorado	2.9L	L4	N/A
2008	Chevrolet	Trailblazer	4.2L	L6	N/A
2008	GMC	Canyon	3.7L	L5	N/A
2008	GMC	Canyon	2.9L	L4	N/A
2008	GMC	Envoy	4.2L	L6	N/A
2008	Hummer	H3	3.7L	L5	N/A
2008	Saab	9-7x	4.2L	L6	N/A
2007	Buick	Rainier	4.2L	L6	N/A
2007	Cadillac	STS	4.4L	V8	N/A
2007	Cadillac	XLR	4.4L	V8	N/A
2007	Chevrolet	Colorado	3.7L	L5	N/A
2007	Chevrolet	Colorado	2.9L	L4	N/A
2007	Chevrolet	Trailblazer	4.2L	L6	N/A
2007	GMC	Canyon	3.7L	L5	N/A
2007	GMC	Canyon	2.9L	L4	N/A
2007	GMC	Envoy	4.2L	L6	N/A
2007	Hummer	H3	3.7L	L5	N/A
2007	Saab	9-7x	4.2L	L6	N/A
2006	Buick	Rainier	4.2L	L6	N/A
2006	Cadillac	STS	4.4L	V8	N/A
2006	Cadillac	XLR	4.4L	V8	N/A
2006	Chevrolet	Colorado	2.8L	L4	N/A
2006	Chevrolet	Colorado	3.5L	L5	N/A
2006	Chevrolet	Trailblazer	4.2L	L6	N/A
2006	Chevrolet	Trailblazer EXT	4.2L	L6	N/A
2006	GMC	Canyon	2.8L	L4	N/A
2006	GMC	Canyon	3.5L	L5	N/A
2006	GMC	Envoy	4.2L	L6	N/A
2006	GMC	Envoy XL	4.2L	L6	N/A
2006	Hummer	H3	3.5L	L5	N/A
2006	Saab	9-7x	4.2L	L6	N/A
2005	Buick	Rainier	4.2L	L6	N/A
2005	Chevrolet	Colorado	2.8L	L4	N/A
2005	Chevrolet	Colorado	3.5L	L5	N/A
2005	Chevrolet	Trailblazer	4.2L	L6	N/A
2005	Chevrolet	Trailblazer EXT	4.2L	L6	N/A
2005	GMC	Canyon	2.8L	L4	N/A
2005	GMC	Canyon	3.5L	L5	N/A
2005	GMC	Envoy	4.2L	L6	N/A
2005	GMC	Envoy XL	4.2L	L6	N/A
2005	GMC	Envoy XUV	4.2L	L6	N/A
2005	Saab	9-7x	4.2L	L6	N/A
2004	Buick	Rainier	4.2L	L6	N/A
2004	Chevrolet	Colorado	2.8L	L4	N/A
2004	Chevrolet	Colorado	3.5L	L5	N/A
2004	Chevrolet	Trailblazer	4.2L	L6	N/A
2004	Chevrolet	Trailblazer EXT	4.2L	L6	N/A
2004	GMC	Canyon	2.8L	L4	N/A
2004	GMC	Canyon	3.5L	L5	N/A
2004	GMC	Envoy	4.2L	L6	N/A
2004	GMC	Envoy XL	4.2L	L6	N/A
2004	GMC	Envoy XUV	4.2L	L6	N/A
2004	Oldsmobile	Bravada	4.2L	L6	N/A
2003	Chevrolet	Trailblazer	4.2L	L6	N/A
2003	Chevrolet	Trailblazer EXT	4.2L	L6	N/A
2003	GMC	Envoy	4.2L	L6	N/A
2003	GMC	Envoy XL	4.2L	L6	N/A
2003	Oldsmobile	Bravada	4.2L	L6	N/A
2002	Chevrolet	Trailblazer	4.2L	L6	N/A
2002	Chevrolet	Trailblazer EXT	4.2L	L6	N/A
2002	GMC	Envoy	4.2L	L6	N/A
2002	GMC	Envoy XL	4.2L	L6	N/A
2002	Oldsmobile	Bravada	4.2L	L6	N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

11569841

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.