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Dorman 635-522 Engine Timing Cover - view 1

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DormanPart #: 635-522

Dorman 635-522 Engine Timing Cover

Name: Dorman 635-522 Engine Timing Cover
Brand: Dorman
SKU: BKKY-635-522
Price: 107.19 USD
Availability: InStock

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⚙️ 280 vehicles fit this part

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

🚗Fitment: Chevrolet, GMC, Hummer, Cadillac, Workhorse, Buick, Isuzu, and Pontiac, Express 1500, Express 2500, Express 3500, Silverado 1500 Classic, Silverado 1500 HD Classic, Silverado 2500 HD Classic, Silverado 3500 Classic, Savana 1500, Savana 2500, Savana 3500, Sierra 1500 Classic, Sierra 1500 HD Classic, Sierra 2500 HD Classic, Sierra 3500 Classic, H2, Escalade, Escalade ESV, Escalade EXT, Avalanche 1500, Silverado 1500, Silverado 1500 HD, Silverado 2500, Silverado 2500 HD, Silverado 3500, Suburban 1500, Suburban 2500, Tahoe, Sierra 1500, Sierra 1500 HD, Sierra 2500 HD, Sierra 3500, Yukon, Yukon XL 1500, Yukon XL 2500, CTS, FasTrack FT1061, FasTrack FT1261, FasTrack FT1461, FasTrack FT1601, FasTrack FT1801, Rainier, Corvette, SSR, Trailblazer EXT, Envoy XL, Sierra 2500, Ascender, GTO, Camaro, and Firebird

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Overview of Dorman Engine Timing Cover 635-522

The Dorman 635-522 engine timing cover is designed for reliable performance and durability in various GM and related vehicles. Constructed from aluminum, this silver timing cover offers a precise fit for models including Chevrolet Silverado 1500, GMC Sierra 1500, Cadillac Escalade, and more.

Material: Durable aluminum construction
Dimensions: 13 inches length by 10.5 inches width
Color: Silver finish for corrosion resistance
Package includes timing cover, liquid gasket, timing cover gasket, and seal
Grade type: Regular
Mounting hardware not included

Detailed Product Description

The Dorman 635-522 engine timing cover is engineered to protect the timing components of your engine from dirt, debris, and oil leaks. Made from aluminum, it provides a lightweight yet sturdy barrier that helps maintain engine integrity. The included liquid gasket, timing cover gasket, and seal ensure a secure, leak-free installation. This timing cover is compatible with a wide range of vehicles such as the Chevrolet Camaro, Cadillac CTS, GMC Yukon XL 1500, and Isuzu Ascender, making it a versatile replacement part for many GM and related models.

Compatible Vehicles and Applications

This timing cover is compatible with multiple makes and models, including:

Buick Rainier
Cadillac Escalade, Escalade ESV, Escalade EXT, CTS
Chevrolet Avalanche 1500, Camaro, Corvette, Express 1500/2500/3500, Silverado 1500/2500/3500, SSR, Suburban 1500/2500, Tahoe, Trailblazer EXT
GMC Envoy XL, Sierra 1500/2500/3500, Yukon, Yukon XL 1500/2500
Hummer H2
Isuzu Ascender
Pontiac Firebird, GTO

Common Issues Addressed by This Timing Cover

Prevents oil leaks caused by worn or damaged timing covers
Protects timing chain and gears from contaminants
Maintains proper engine timing by securing timing components
Replaces corroded or cracked original timing covers
Helps avoid engine performance issues related to timing cover failure

Installation Notes and Tips

Ensure the engine surface is clean and free of old gasket material before installation
Use the included liquid gasket and timing cover gasket for a proper seal
Torque bolts to manufacturer specifications (mounting hardware not included)
Inspect timing components during installation for wear or damage
Allow liquid gasket to cure as recommended before engine startup

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 635-522 timing cover undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Refer to Dorman’s official warranty policy for complete information.

Brand	Dorman
Part Number	635-522
Color	Silver
Grade Type	Regular
Length	13
Material	Aluminum
Mounting Hardware Included	No
Package Contents	Includes Timing Cover; Liquid Gasket; Timing Cover Gasket; Seal
Width (in)	10.5 in

This part fits 280 vehicles. Search below:

Year	Make	Model	Liters	Cylinders	Position
2007	Chevrolet	Express 1500	5.3L	V8	N/A
2007	Chevrolet	Express 2500	6.0L	V8	N/A
2007	Chevrolet	Express 2500	4.8L	V8	N/A
2007	Chevrolet	Express 3500	6.0L	V8	N/A
2007	Chevrolet	Express 3500	4.8L	V8	N/A
2007	Chevrolet	Silverado 1500 Classic	5.3L	V8	N/A
2007	Chevrolet	Silverado 1500 Classic	6.0L	V8	N/A
2007	Chevrolet	Silverado 1500 Classic	4.8L	V8	N/A
2007	Chevrolet	Silverado 1500 HD Classic	6.0L	V8	N/A
2007	Chevrolet	Silverado 2500 HD Classic	6.0L	V8	N/A
2007	Chevrolet	Silverado 3500 Classic	6.0L	V8	N/A
2007	GMC	Savana 1500	5.3L	V8	N/A
2007	GMC	Savana 2500	6.0L	V8	N/A
2007	GMC	Savana 2500	4.8L	V8	N/A
2007	GMC	Savana 3500	6.0L	V8	N/A
2007	GMC	Savana 3500	4.8L	V8	N/A
2007	GMC	Sierra 1500 Classic	5.3L	V8	N/A
2007	GMC	Sierra 1500 Classic	6.0L	V8	N/A
2007	GMC	Sierra 1500 Classic	4.8L	V8	N/A
2007	GMC	Sierra 1500 HD Classic	6.0L	V8	N/A
2007	GMC	Sierra 2500 HD Classic	6.0L	V8	N/A
2007	GMC	Sierra 3500 Classic	6.0L	V8	N/A
2007	Hummer	H2	6.0L	V8	N/A
2006	Cadillac	Escalade	6.0L	V8	N/A
2006	Cadillac	Escalade ESV	6.0L	V8	N/A
2006	Cadillac	Escalade EXT	6.0L	V8	N/A
2006	Chevrolet	Avalanche 1500	5.3L	V8	N/A
2006	Chevrolet	Express 1500	5.3L	V8	N/A
2006	Chevrolet	Express 2500	6.0L	V8	N/A
2006	Chevrolet	Express 2500	4.8L	V8	N/A
2006	Chevrolet	Express 3500	6.0L	V8	N/A
2006	Chevrolet	Express 3500	4.8L	V8	N/A
2006	Chevrolet	Silverado 1500	5.3L	V8	N/A
2006	Chevrolet	Silverado 1500	6.0L	V8	N/A
2006	Chevrolet	Silverado 1500	4.8L	V8	N/A
2006	Chevrolet	Silverado 1500 HD	6.0L	V8	N/A
2006	Chevrolet	Silverado 2500	5.3L	V8	N/A
2006	Chevrolet	Silverado 2500 HD	6.0L	V8	N/A
2006	Chevrolet	Silverado 3500	6.0L	V8	N/A
2006	Chevrolet	Suburban 1500	6.0L	V8	N/A
2006	Chevrolet	Suburban 2500	6.0L	V8	N/A
2006	Chevrolet	Tahoe	5.3L	V8	N/A
2006	Chevrolet	Tahoe	4.8L	V8	N/A
2006	GMC	Savana 1500	5.3L	V8	N/A
2006	GMC	Savana 2500	6.0L	V8	N/A
2006	GMC	Savana 2500	4.8L	V8	N/A
2006	GMC	Savana 3500	6.0L	V8	N/A
2006	GMC	Savana 3500	4.8L	V8	N/A
2006	GMC	Sierra 1500	5.3L	V8	N/A
2006	GMC	Sierra 1500	6.0L	V8	N/A
2006	GMC	Sierra 1500	4.8L	V8	N/A
2006	GMC	Sierra 1500 HD	6.0L	V8	N/A
2006	GMC	Sierra 2500 HD	6.0L	V8	N/A
2006	GMC	Sierra 3500	6.0L	V8	N/A
2006	GMC	Yukon	5.3L	V8	N/A
2006	GMC	Yukon	6.0L	V8	N/A
2006	GMC	Yukon	4.8L	V8	N/A
2006	GMC	Yukon XL 1500	5.3L	V8	N/A
2006	GMC	Yukon XL 1500	6.0L	V8	N/A
2006	GMC	Yukon XL 2500	6.0L	V8	N/A
2006	Hummer	H2	6.0L	V8	N/A
2005	Cadillac	CTS	5.7L	V8	N/A
2005	Cadillac	Escalade	5.3L	V8	N/A
2005	Cadillac	Escalade	6.0L	V8	N/A
2005	Cadillac	Escalade ESV	6.0L	V8	N/A
2005	Cadillac	Escalade EXT	6.0L	V8	N/A
2005	Chevrolet	Avalanche 1500	5.3L	V8	N/A
2005	Chevrolet	Express 1500	5.3L	V8	N/A
2005	Chevrolet	Express 2500	5.3L	V8	N/A
2005	Chevrolet	Express 2500	6.0L	V8	N/A
2005	Chevrolet	Express 2500	4.8L	V8	N/A
2005	Chevrolet	Express 3500	6.0L	V8	N/A
2005	Chevrolet	Express 3500	4.8L	V8	N/A
2005	Chevrolet	Silverado 1500	5.3L	V8	N/A
2005	Chevrolet	Silverado 1500	6.0L	V8	N/A
2005	Chevrolet	Silverado 1500	4.8L	V8	N/A
2005	Chevrolet	Silverado 1500 HD	6.0L	V8	N/A
2005	Chevrolet	Silverado 2500 HD	6.0L	V8	N/A
2005	Chevrolet	Silverado 3500	6.0L	V8	N/A
2005	Chevrolet	Suburban 1500	5.3L	V8	N/A
2005	Chevrolet	Suburban 2500	6.0L	V8	N/A
2005	Chevrolet	Tahoe	5.3L	V8	N/A
2005	Chevrolet	Tahoe	4.8L	V8	N/A
2005	GMC	Savana 1500	5.3L	V8	N/A
2005	GMC	Savana 2500	5.3L	V8	N/A
2005	GMC	Savana 2500	6.0L	V8	N/A
2005	GMC	Savana 2500	4.8L	V8	N/A
2005	GMC	Savana 3500	6.0L	V8	N/A
2005	GMC	Savana 3500	4.8L	V8	N/A
2005	GMC	Sierra 1500	5.3L	V8	N/A
2005	GMC	Sierra 1500	6.0L	V8	N/A
2005	GMC	Sierra 1500	4.8L	V8	N/A
2005	GMC	Sierra 1500 HD	6.0L	V8	N/A
2005	GMC	Sierra 2500 HD	6.0L	V8	N/A
2005	GMC	Sierra 3500	6.0L	V8	N/A
2005	GMC	Yukon	5.3L	V8	N/A
2005	GMC	Yukon	6.0L	V8	N/A
2005	GMC	Yukon	4.8L	V8	N/A
2005	GMC	Yukon XL 1500	5.3L	V8	N/A
2005	GMC	Yukon XL 1500	6.0L	V8	N/A
2005	GMC	Yukon XL 2500	6.0L	V8	N/A
2005	Hummer	H2	6.0L	V8	N/A
2004	Buick	Rainier	5.3L	V8	N/A
2004	Cadillac	CTS	5.7L	V8	N/A
2004	Cadillac	Escalade	5.3L	V8	N/A
2004	Cadillac	Escalade	6.0L	V8	N/A
2004	Cadillac	Escalade ESV	6.0L	V8	N/A
2004	Cadillac	Escalade EXT	6.0L	V8	N/A
2004	Chevrolet	Avalanche 1500	5.3L	V8	N/A
2004	Chevrolet	Corvette	5.7L	V8	N/A
2004	Chevrolet	Express 1500	5.3L	V8	N/A
2004	Chevrolet	Express 2500	5.3L	V8	N/A
2004	Chevrolet	Express 2500	6.0L	V8	N/A
2004	Chevrolet	Express 2500	4.8L	V8	N/A
2004	Chevrolet	Express 3500	6.0L	V8	N/A
2004	Chevrolet	Silverado 1500	5.3L	V8	N/A
2004	Chevrolet	Silverado 1500	6.0L	V8	N/A
2004	Chevrolet	Silverado 1500	4.8L	V8	N/A
2004	Chevrolet	Silverado 2500	6.0L	V8	N/A
2004	Chevrolet	Silverado 2500 HD	6.0L	V8	N/A
2004	Chevrolet	Silverado 3500	6.0L	V8	N/A
2004	Chevrolet	SSR	5.3L	V8	N/A
2004	Chevrolet	Suburban 1500	5.3L	V8	N/A
2004	Chevrolet	Suburban 2500	6.0L	V8	N/A
2004	Chevrolet	Tahoe	5.3L	V8	N/A
2004	Chevrolet	Tahoe	4.8L	V8	N/A
2004	Chevrolet	Trailblazer EXT	5.3L	V8	N/A
2004	GMC	Envoy XL	5.3L	V8	N/A
2004	GMC	Savana 1500	5.3L	V8	N/A
2004	GMC	Savana 2500	5.3L	V8	N/A
2004	GMC	Savana 2500	6.0L	V8	N/A
2004	GMC	Savana 2500	4.8L	V8	N/A
2004	GMC	Savana 3500	6.0L	V8	N/A
2004	GMC	Savana 3500	4.8L	V8	N/A
2004	GMC	Sierra 1500	5.3L	V8	N/A
2004	GMC	Sierra 1500	4.8L	V8	N/A
2004	GMC	Sierra 2500	6.0L	V8	N/A
2004	GMC	Sierra 2500 HD	6.0L	V8	N/A
2004	GMC	Sierra 3500	6.0L	V8	N/A
2004	GMC	Yukon	5.3L	V8	N/A
2004	GMC	Yukon	6.0L	V8	N/A
2004	GMC	Yukon	4.8L	V8	N/A
2004	GMC	Yukon XL 1500	5.3L	V8	N/A
2004	GMC	Yukon XL 1500	6.0L	V8	N/A
2004	GMC	Yukon XL 2500	6.0L	V8	N/A
2004	Hummer	H2	6.0L	V8	N/A
2004	Isuzu	Ascender	5.3L	V8	N/A
2004	Pontiac	GTO	5.7L	V8	N/A
2003	Cadillac	Escalade	5.3L	V8	N/A
2003	Cadillac	Escalade	6.0L	V8	N/A
2003	Cadillac	Escalade ESV	6.0L	V8	N/A
2003	Cadillac	Escalade EXT	6.0L	V8	N/A
2003	Chevrolet	Avalanche 1500	5.3L	V8	N/A
2003	Chevrolet	Corvette	5.7L	V8	N/A
2003	Chevrolet	Express 1500	5.3L	V8	N/A
2003	Chevrolet	Express 2500	5.3L	V8	N/A
2003	Chevrolet	Express 2500	6.0L	V8	N/A
2003	Chevrolet	Express 2500	4.8L	V8	N/A
2003	Chevrolet	Express 3500	6.0L	V8	N/A
2003	Chevrolet	Silverado 1500	5.3L	V8	N/A
2003	Chevrolet	Silverado 1500	6.0L	V8	N/A
2003	Chevrolet	Silverado 1500	4.8L	V8	N/A
2003	Chevrolet	Silverado 1500 HD	6.0L	V8	N/A
2003	Chevrolet	Silverado 2500	6.0L	V8	N/A
2003	Chevrolet	Silverado 2500 HD	6.0L	V8	N/A
2003	Chevrolet	Silverado 3500	6.0L	V8	N/A
2003	Chevrolet	SSR	5.3L	V8	N/A
2003	Chevrolet	Suburban 1500	5.3L	V8	N/A
2003	Chevrolet	Suburban 2500	6.0L	V8	N/A
2003	Chevrolet	Tahoe	5.3L	V8	N/A
2003	Chevrolet	Tahoe	4.8L	V8	N/A
2003	Chevrolet	Trailblazer EXT	5.3L	V8	N/A
2003	GMC	Envoy XL	5.3L	V8	N/A
2003	GMC	Savana 1500	5.3L	V8	N/A
2003	GMC	Savana 2500	5.3L	V8	N/A
2003	GMC	Savana 2500	6.0L	V8	N/A
2003	GMC	Savana 2500	4.8L	V8	N/A
2003	GMC	Savana 3500	6.0L	V8	N/A
2003	GMC	Sierra 1500	5.3L	V8	N/A
2003	GMC	Sierra 1500	4.8L	V8	N/A
2003	GMC	Sierra 1500 HD	6.0L	V8	N/A
2003	GMC	Sierra 2500	6.0L	V8	N/A
2003	GMC	Sierra 2500 HD	6.0L	V8	N/A
2003	GMC	Sierra 3500	6.0L	V8	N/A
2003	GMC	Yukon	5.3L	V8	N/A
2003	GMC	Yukon	6.0L	V8	N/A
2003	GMC	Yukon	4.8L	V8	N/A
2003	GMC	Yukon XL 1500	5.3L	V8	N/A
2003	GMC	Yukon XL 1500	6.0L	V8	N/A
2003	GMC	Yukon XL 2500	6.0L	V8	N/A
2003	Hummer	H2	6.0L	V8	N/A
2003	Isuzu	Ascender	5.3L	V8	N/A
2002	Cadillac	Escalade	5.3L	V8	N/A
2002	Cadillac	Escalade	6.0L	V8	N/A
2002	Cadillac	Escalade EXT	6.0L	V8	N/A
2002	Chevrolet	Avalanche 1500	5.3L	V8	N/A
2002	Chevrolet	Camaro	5.7L	V8	N/A
2002	Chevrolet	Corvette	5.7L	V8	N/A
2002	Chevrolet	Silverado 1500	5.3L	V8	N/A
2002	Chevrolet	Silverado 1500	4.8L	V8	N/A
2002	Chevrolet	Silverado 1500 HD	6.0L	V8	N/A
2002	Chevrolet	Silverado 2500	6.0L	V8	N/A
2002	Chevrolet	Silverado 2500 HD	6.0L	V8	N/A
2002	Chevrolet	Silverado 3500	6.0L	V8	N/A
2002	Chevrolet	Suburban 1500	5.3L	V8	N/A
2002	Chevrolet	Suburban 2500	6.0L	V8	N/A
2002	Chevrolet	Tahoe	5.3L	V8	N/A
2002	Chevrolet	Tahoe	4.8L	V8	N/A
2002	GMC	Sierra 1500	5.3L	V8	N/A
2002	GMC	Sierra 1500	4.8L	V8	N/A
2002	GMC	Sierra 1500 HD	6.0L	V8	N/A
2002	GMC	Sierra 2500	6.0L	V8	N/A
2002	GMC	Sierra 2500 HD	6.0L	V8	N/A
2002	GMC	Sierra 3500	6.0L	V8	N/A
2002	GMC	Yukon	5.3L	V8	N/A
2002	GMC	Yukon	6.0L	V8	N/A
2002	GMC	Yukon	4.8L	V8	N/A
2002	GMC	Yukon XL 1500	5.3L	V8	N/A
2002	GMC	Yukon XL 1500	6.0L	V8	N/A
2002	GMC	Yukon XL 2500	6.0L	V8	N/A
2002	Pontiac	Firebird	5.7L	V8	N/A
2001	Chevrolet	Camaro	5.7L	V8	N/A
2001	Chevrolet	Corvette	5.7L	V8	N/A
2001	Chevrolet	Silverado 1500	5.3L	V8	N/A
2001	Chevrolet	Silverado 1500	4.8L	V8	N/A
2001	Chevrolet	Silverado 1500 HD	6.0L	V8	N/A
2001	Chevrolet	Silverado 2500	6.0L	V8	N/A
2001	Chevrolet	Silverado 2500 HD	6.0L	V8	N/A
2001	Chevrolet	Silverado 3500	6.0L	V8	N/A
2001	Chevrolet	Suburban 1500	5.3L	V8	N/A
2001	Chevrolet	Suburban 2500	6.0L	V8	N/A
2001	Chevrolet	Tahoe	5.3L	V8	N/A
2001	Chevrolet	Tahoe	4.8L	V8	N/A
2001	GMC	Sierra 1500	5.3L	V8	N/A
2001	GMC	Sierra 1500	4.8L	V8	N/A
2001	GMC	Sierra 1500 HD	6.0L	V8	N/A
2001	GMC	Sierra 2500	6.0L	V8	N/A
2001	GMC	Sierra 2500 HD	6.0L	V8	N/A
2001	GMC	Sierra 3500	6.0L	V8	N/A
2001	GMC	Yukon	5.3L	V8	N/A
2001	GMC	Yukon	6.0L	V8	N/A
2001	GMC	Yukon	4.8L	V8	N/A
2001	GMC	Yukon XL 1500	5.3L	V8	N/A
2001	GMC	Yukon XL 1500	6.0L	V8	N/A
2001	GMC	Yukon XL 2500	6.0L	V8	N/A
2001	Pontiac	Firebird	5.7L	V8	N/A
2000	Chevrolet	Camaro	5.7L	V8	N/A
2000	Chevrolet	Corvette	5.7L	V8	N/A
2000	Chevrolet	Silverado 1500	5.3L	V8	N/A
2000	Chevrolet	Silverado 1500	4.8L	V8	N/A
2000	Chevrolet	Silverado 2500	5.3L	V8	N/A
2000	Chevrolet	Silverado 2500	6.0L	V8	N/A
2000	Chevrolet	Suburban 1500	5.3L	V8	N/A
2000	Chevrolet	Suburban 2500	6.0L	V8	N/A
2000	Chevrolet	Tahoe	5.3L	V8	N/A
2000	Chevrolet	Tahoe	4.8L	V8	N/A
2000	GMC	Sierra 1500	5.3L	V8	N/A
2000	GMC	Sierra 1500	4.8L	V8	N/A
2000	GMC	Sierra 2500	5.3L	V8	N/A
2000	GMC	Sierra 2500	6.0L	V8	N/A
2000	GMC	Yukon	5.3L	V8	N/A
2000	GMC	Yukon	4.8L	V8	N/A
2000	GMC	Yukon XL 1500	5.3L	V8	N/A
2000	GMC	Yukon XL 2500	6.0L	V8	N/A
2000	Pontiac	Firebird	5.7L	V8	N/A
1999	Chevrolet	Camaro	5.7L	V8	N/A
1999	Chevrolet	Corvette	5.7L	V8	N/A
1999	Chevrolet	Silverado 1500	5.3L	V8	N/A
1999	Chevrolet	Silverado 1500	4.8L	V8	N/A
1999	Chevrolet	Silverado 2500	5.3L	V8	N/A
1999	Chevrolet	Silverado 2500	6.0L	V8	N/A
1999	GMC	Sierra 1500	5.3L	V8	N/A
1999	GMC	Sierra 1500	4.8L	V8	N/A
1999	GMC	Sierra 2500	5.3L	V8	N/A
1999	GMC	Sierra 2500	6.0L	V8	N/A
1999	Pontiac	Firebird	5.7L	V8	N/A
1998	Chevrolet	Camaro	5.7L	V8	N/A
1998	Chevrolet	Corvette	5.7L	V8	N/A
1998	Pontiac	Firebird	5.7L	V8	N/A
1997	Chevrolet	Corvette	5.7L	V8	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:

12561243500LS28125612430

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