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Dorman 635-509 Engine Timing Cover - view 1

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DormanPart #: 635-509

Dorman 635-509 Engine Timing Cover

Name: Dorman 635-509 Engine Timing Cover
Brand: Dorman
SKU: BKKY-635-509
Price: 54.24 USD
Availability: InStock

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⚙️ 126 vehicles fit this part

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

🚗Fitment: Buick, Cadillac, Chevrolet, Oldsmobile, Pontiac, and GMC, Roadmaster, Fleetwood, Caprice, Brougham, Camaro, Custom Cruiser, Firebird, Monte Carlo, Blazer, El Camino, R10, R10 Suburban, R20, V10, Caballero, Jimmy, R1500, R1500 Suburban, R2500, V1500, Grand Prix, C10, C10 Suburban, C20, C20 Suburban, K10, K10 Suburban, K20 Suburban, K5 Blazer, C1500, C1500 Suburban, C2500, C2500 Suburban, C3500, K1500, Bonneville, Parisienne, Impala, K20, Malibu, and Cutlass Cruiser

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Durable Steel Engine Timing Cover for GM Vehicles

The Dorman 635-509 engine timing cover is designed to provide reliable protection for the timing components of select Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac models. Constructed from steel and finished in black, this timing cover offers a sturdy replacement option for maintaining engine integrity.

Made from durable steel material for long-lasting performance
Dimensions: 11 inches length by 8 inches width for precise fitment
Includes mounting hardware for straightforward installation
Comes with gasket and seal to ensure a proper engine seal
Regular grade type suitable for standard engine applications

Product Details and Specifications

The Dorman 635-509 timing cover is engineered to fit a range of GM vehicles including the Chevrolet Blazer, Camaro, C10 and C1500 series trucks, Cadillac Fleetwood, Buick Riviera, Pontiac Firebird, and more. Its steel construction provides resistance to wear and heat, while the included gasket and seal help prevent oil leaks and contamination. The black finish offers corrosion resistance and a clean appearance under the hood. This timing cover measures 11 inches in length and 8 inches in width, matching OEM specifications for compatible models.

Compatible Vehicles and Applications

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

Buick models such as the Riviera and Regal
Cadillac Fleetwood and Brougham
Chevrolet trucks including C10, C1500, C2500, and C3500 series
Chevrolet Camaro and Impala
GMC trucks and Suburban variants
Oldsmobile and Pontiac models like the Bonneville and Firebird

Common Issues Addressed by This Timing Cover

Prevents oil leaks caused by damaged or worn timing covers
Protects timing chain and gears from dirt and debris
Restores proper engine sealing to maintain oil pressure
Replaces corroded or cracked OEM timing covers
Helps avoid engine timing component damage due to exposure

Installation Notes and Tips

Installation of the Dorman 635-509 timing cover includes the necessary mounting hardware, gasket, and seal for a complete replacement. It is recommended to clean the mounting surface thoroughly before installation to ensure a proper seal. Use appropriate torque specifications for mounting bolts to avoid warping the cover. Inspect timing components during installation for wear or damage and replace as needed.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 635-509 timing cover undergoes quality checks to ensure durability and proper sealing performance. This product includes a limited warranty against defects in material and workmanship, providing confidence in its reliability for your GM vehicle.

Brand	Dorman
Part Number	635-509
Color	Black
Grade Type	Regular
Length	11
Material	Steel
Mounting Hardware Included	Yes
Package Contents	Timing Cover; Gasket; Seal
Width (in)	8 in

This part fits 126 vehicles. Search below:

Year	Make	Model	Liters	Cylinders	Position
1993	Buick	Roadmaster	5.7L	V8	N/A
1993	Cadillac	Fleetwood	5.7L	V8	N/A
1993	Chevrolet	Caprice	5.7L	V8	N/A
1993	Chevrolet	Caprice	5.0L	V8	N/A
1992	Buick	Roadmaster	5.7L	V8	N/A
1992	Cadillac	Brougham	5.7L	V8	N/A
1992	Cadillac	Brougham	5.0L	V8	N/A
1992	Chevrolet	Camaro	5.0L	V8	N/A
1992	Chevrolet	Caprice	5.7L	V8	N/A
1992	Chevrolet	Caprice	5.0L	V8	N/A
1992	Oldsmobile	Custom Cruiser	5.7L	V8	N/A
1992	Oldsmobile	Custom Cruiser	5.0L	V8	N/A
1992	Pontiac	Firebird	5.0L	V8	N/A
1991	Buick	Roadmaster	5.0L	V8	N/A
1991	Cadillac	Brougham	5.7L	V8	N/A
1991	Cadillac	Brougham	5.0L	V8	N/A
1991	Chevrolet	Camaro	5.0L	V8	N/A
1991	Chevrolet	Caprice	5.7L	V8	N/A
1991	Chevrolet	Caprice	5.0L	V8	N/A
1991	Oldsmobile	Custom Cruiser	5.0L	V8	N/A
1991	Pontiac	Firebird	5.0L	V8	N/A
1990	Cadillac	Brougham	5.7L	V8	N/A
1990	Chevrolet	Camaro	5.0L	V8	N/A
1990	Chevrolet	Caprice	5.0L	V8	N/A
1990	Pontiac	Firebird	5.0L	V8	N/A
1989	Chevrolet	Camaro	5.0L	V8	N/A
1989	Chevrolet	Caprice	5.0L	V8	N/A
1989	Pontiac	Firebird	5.0L	V8	N/A
1988	Chevrolet	Camaro	5.0L	V8	N/A
1988	Chevrolet	Caprice	5.0L	V8	N/A
1988	Chevrolet	Monte Carlo	5.0L	V8	N/A
1988	Pontiac	Firebird	5.0L	V8	N/A
1987	Chevrolet	Blazer	5.0L	V8	N/A
1987	Chevrolet	Camaro	5.0L	V8	N/A
1987	Chevrolet	Caprice	5.0L	V8	N/A
1987	Chevrolet	El Camino	5.0L	V8	N/A
1987	Chevrolet	Monte Carlo	5.0L	V8	N/A
1987	Chevrolet	R10	5.0L	V8	N/A
1987	Chevrolet	R10 Suburban	5.0L	V8	N/A
1987	Chevrolet	R20	5.0L	V8	N/A
1987	Chevrolet	V10	5.0L	V8	N/A
1987	GMC	Jimmy	5.0L	V8	N/A
1987	GMC	R1500	5.0L	V8	N/A
1987	GMC	R1500 Suburban	5.0L	V8	N/A
1987	GMC	R2500	5.0L	V8	N/A
1987	GMC	V1500	5.0L	V8	N/A
1987	Pontiac	Firebird	5.0L	V8	N/A
1987	Pontiac	Grand Prix	5.0L	V8	N/A
1986	Chevrolet	C10	5.0L	V8	N/A
1986	Chevrolet	C10 Suburban	5.0L	V8	N/A
1986	Chevrolet	C20	5.0L	V8	N/A
1986	Chevrolet	C20 Suburban	5.0L	V8	N/A
1986	Chevrolet	Camaro	5.0L	V8	N/A
1986	Chevrolet	Caprice	5.0L	V8	N/A
1986	Chevrolet	El Camino	5.0L	V8	N/A
1986	Chevrolet	K10	5.0L	V8	N/A
1986	Chevrolet	K10 Suburban	5.0L	V8	N/A
1986	Chevrolet	K20 Suburban	5.0L	V8	N/A
1986	Chevrolet	K5 Blazer	5.0L	V8	N/A
1986	Chevrolet	Monte Carlo	5.0L	V8	N/A
1986	GMC	C1500	5.0L	V8	N/A
1986	GMC	C1500 Suburban	5.0L	V8	N/A
1986	GMC	C2500	5.0L	V8	N/A
1986	GMC	C2500 Suburban	5.0L	V8	N/A
1986	GMC	C3500	5.0L	V8	N/A
1986	GMC	Jimmy	5.0L	V8	N/A
1986	GMC	K1500	5.0L	V8	N/A
1986	Pontiac	Bonneville	5.0L	V8	N/A
1986	Pontiac	Firebird	5.0L	V8	N/A
1986	Pontiac	Grand Prix	5.0L	V8	N/A
1986	Pontiac	Parisienne	5.0L	V8	N/A
1985	Chevrolet	C10	5.0L	V8	N/A
1985	Chevrolet	C10 Suburban	5.0L	V8	N/A
1985	Chevrolet	C20	5.0L	V8	N/A
1985	Chevrolet	C20 Suburban	5.0L	V8	N/A
1985	Chevrolet	Camaro	5.0L	V8	N/A
1985	Chevrolet	Caprice	5.0L	V8	N/A
1985	Chevrolet	El Camino	5.0L	V8	N/A
1985	Chevrolet	Impala	5.0L	V8	N/A
1985	Chevrolet	K10	5.0L	V8	N/A
1985	Chevrolet	K20	5.0L	V8	N/A
1985	Chevrolet	K20 Suburban	5.0L	V8	N/A
1985	Chevrolet	K5 Blazer	5.0L	V8	N/A
1985	Chevrolet	Monte Carlo	5.0L	V8	N/A
1985	GMC	C1500	5.0L	V8	N/A
1985	GMC	C1500 Suburban	5.0L	V8	N/A
1985	GMC	C2500	5.0L	V8	N/A
1985	GMC	C2500 Suburban	5.0L	V8	N/A
1985	GMC	Jimmy	5.0L	V8	N/A
1985	GMC	K1500	5.0L	V8	N/A
1985	Pontiac	Bonneville	5.0L	V8	N/A
1985	Pontiac	Firebird	5.0L	V8	N/A
1985	Pontiac	Grand Prix	5.0L	V8	N/A
1985	Pontiac	Parisienne	5.0L	V8	N/A
1984	Chevrolet	Camaro	5.0L	V8	N/A
1984	Chevrolet	Caprice	5.0L	V8	N/A
1984	Chevrolet	El Camino	5.0L	V8	N/A
1984	Chevrolet	Impala	5.0L	V8	N/A
1984	Chevrolet	Monte Carlo	5.0L	V8	N/A
1984	Pontiac	Bonneville	5.0L	V8	N/A
1984	Pontiac	Firebird	5.0L	V8	N/A
1984	Pontiac	Grand Prix	5.0L	V8	N/A
1984	Pontiac	Parisienne	5.0L	V8	N/A
1983	Chevrolet	Camaro	5.0L	V8	N/A
1983	Chevrolet	Caprice	5.0L	V8	N/A
1983	Chevrolet	El Camino	5.0L	V8	N/A
1983	Chevrolet	Impala	5.0L	V8	N/A
1983	Chevrolet	Malibu	5.0L	V8	N/A
1983	Chevrolet	Monte Carlo	5.0L	V8	N/A
1983	Pontiac	Bonneville	5.0L	V8	N/A
1983	Pontiac	Firebird	5.0L	V8	N/A
1983	Pontiac	Grand Prix	5.0L	V8	N/A
1983	Pontiac	Parisienne	5.0L	V8	N/A
1982	Chevrolet	Camaro	5.0L	V8	N/A
1982	Chevrolet	Caprice	4.4L	V8	N/A
1982	Chevrolet	Caprice	5.0L	V8	N/A
1982	Chevrolet	El Camino	4.4L	V8	N/A
1982	Chevrolet	El Camino	5.0L	V8	N/A
1982	Chevrolet	Impala	4.4L	V8	N/A
1982	Chevrolet	Impala	5.0L	V8	N/A
1982	Chevrolet	Malibu	4.4L	V8	N/A
1982	Chevrolet	Malibu	5.0L	V8	N/A
1982	Chevrolet	Monte Carlo	4.4L	V8	N/A
1982	Chevrolet	Monte Carlo	5.0L	V8	N/A
1982	Oldsmobile	Cutlass Cruiser	5.0L	V8	N/A
1982	Pontiac	Firebird	5.0L	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:

12523974500305S

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