Dorman W37677 Drum Brake Wheel Cylinder - Rear

Name: Dorman W37677 Drum Brake Wheel Cylinder - Rear
Brand: Dorman
SKU: BKKX-W37677
Price: 23.78 USD
Availability: InStock

Rear

⚙️ 103 vehicles fit this part

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🚗Fitment: Buick, Chevrolet, Oldsmobile, Pontiac, and Cadillac, Century, Regal, Cavalier, Lumina, LeSabre, Monte Carlo, 88, LSS, Bonneville, Regency, Park Avenue, 98, Cutlass, Cutlass Ciera, Cutlass Cruiser, DeVille, Fleetwood, Delta 88, and Electra

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Reliable Drum Brake Wheel Cylinder for Select GM Vehicles

The Dorman W37677 drum brake wheel cylinder is engineered to restore proper braking function in various Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models. Designed with durable cast iron construction and precise specifications, this wheel cylinder ensures consistent hydraulic pressure for safe and effective braking.

Includes bleeder screw for easy brake system bleeding
Cast iron casting material for strength and durability
Brake line inlet thread diameter of 10 mm with M10 x 1.0 thread size and 1.0 thread pitch
Bore diameter of 0.875 inches for accurate fit and performance
Package contains one drum brake wheel cylinder

Product Details and Specifications

The Dorman W37677 wheel cylinder is constructed from cast iron, providing reliable resistance to wear and corrosion in brake hydraulics. It features a bore diameter of 0.875 inches, matching original equipment specifications for compatible vehicles. The brake line inlet thread diameter is 10 mm, with an M10 x 1.0 thread size and a 1.0 thread pitch, ensuring secure and leak-free connections. This part includes a bleeder screw to facilitate proper brake fluid bleeding during installation, although it does not include a bleeder screw cap.

Compatible Vehicles and Applications

This drum brake wheel cylinder is compatible with a range of General Motors vehicles, including Buick models like the Century, LeSabre, and Regal; Cadillac models such as DeVille, Fleetwood, and Seville; Chevrolet models including Cavalier, Lumina, and Monte Carlo; Oldsmobile models like Cutlass, Cutlass Ciera, and Delta 88; and Pontiac models including Bonneville, Grand Prix, and Grand Am. The Dorman W37677 is designed to meet the hydraulic brake system requirements of these vehicles, ensuring proper fit and function.

Common Issues Addressed by This Wheel Cylinder

Brake fluid leaks causing reduced braking efficiency
Uneven brake pressure leading to pulling or dragging brakes
Spongy or soft brake pedal feel due to internal cylinder wear
Brake noise or reduced stopping power from faulty wheel cylinders
Corrosion or damage to original wheel cylinder components

Installation Notes and Tips

When installing the Dorman W37677 drum brake wheel cylinder, ensure the brake system is properly bled using the included bleeder screw to remove air and maintain hydraulic pressure. Verify thread compatibility with the brake line inlet (M10 x 1.0 thread size) before installation. Inspect brake shoes and drums for wear and replace if necessary to ensure optimal braking performance. Use appropriate brake fluid and follow manufacturer torque specifications for all fittings.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The W37677 wheel cylinder undergoes rigorous quality control to ensure durability and reliable performance in brake hydraulic systems. This part is backed by Dorman's limited warranty, providing coverage against defects in material and workmanship under normal use.

Brand	Dorman
Part Number	W37677
Bleeder Screw Cap Included	No
Bleeder Screw Included	Yes
Bore Diameter	0.875
Brake Component Inlet Thread Size	M10 X 1.0
Brake Line Inlet Thread Diameter	10
Casting Material	Cast Iron
Package Contents	1 Drum Brake Wheel Cylinder
Thread Pitch	1.0

This part fits 103 vehicles. Search below:

Year	Make	Model	Position	Notes
2003	Buick	Century	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2003	Buick	Regal	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2002	Buick	Century	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2002	Buick	Regal	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2002	Chevrolet	Cavalier	Rear	Bore size of 7/8 Inch with Softride Package.
2001	Buick	Century	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2001	Buick	Regal	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2001	Chevrolet	Cavalier	Rear	Bore size of 7/8 Inch with Softride Package.
2001	Chevrolet	Lumina	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2000	Buick	Century	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2000	Buick	Regal	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
2000	Chevrolet	Cavalier	Rear	Bore: 7/8 In.; w/RPO Code FE0 (Active Suspension)
2000	Chevrolet	Lumina	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1999	Buick	Century	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1999	Buick	LeSabre	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1999	Buick	Regal	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1999	Chevrolet	Cavalier	Rear	Bore: 7/8 In.; w/RPO Code FE0 (Active Suspension)
1999	Chevrolet	Lumina	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1999	Chevrolet	Monte Carlo	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1999	Oldsmobile	88	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1999	Oldsmobile	LSS	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1999	Pontiac	Bonneville	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1998	Buick	Century	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1998	Buick	LeSabre	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1998	Buick	Regal	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1998	Chevrolet	Cavalier	Rear	Bore: 7/8 In.; w/RPO Code FE0 (Active Suspension)
1998	Chevrolet	Lumina	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1998	Chevrolet	Monte Carlo	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1998	Oldsmobile	88	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1998	Oldsmobile	LSS	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1998	Oldsmobile	Regency	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1998	Pontiac	Bonneville	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1997	Buick	Century	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1997	Buick	LeSabre	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1997	Buick	Park Avenue	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1997	Buick	Regal	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1997	Chevrolet	Cavalier	Rear	Bore size of 7/8 Inch with Softride Package.
1997	Chevrolet	Lumina	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1997	Chevrolet	Monte Carlo	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1997	Oldsmobile	88	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1997	Oldsmobile	LSS	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1997	Oldsmobile	Regency	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1997	Pontiac	Bonneville	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1996	Buick	Century	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1996	Buick	LeSabre	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1996	Buick	Park Avenue	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1996	Chevrolet	Cavalier	Rear	Bore size of 7/8 Inch with Softride Package.
1996	Chevrolet	Lumina	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1996	Chevrolet	Monte Carlo	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1996	Oldsmobile	88	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1996	Oldsmobile	98	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1996	Oldsmobile	Cutlass	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1996	Oldsmobile	Cutlass Ciera	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1996	Oldsmobile	LSS	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1996	Pontiac	Bonneville	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1995	Buick	Century	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1995	Chevrolet	Cavalier	Rear	Bore size of 7/8 Inch with Softride Package.
1995	Chevrolet	Lumina	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1995	Chevrolet	Monte Carlo	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1995	Oldsmobile	Cutlass	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1995	Oldsmobile	Cutlass Ciera	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1994	Buick	Century	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1994	Chevrolet	Lumina	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1994	Oldsmobile	Cutlass	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1994	Oldsmobile	Cutlass Ciera	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1994	Oldsmobile	Cutlass Cruiser	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1993	Buick	Century	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1993	Chevrolet	Lumina	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1993	Oldsmobile	Cutlass	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1993	Oldsmobile	Cutlass Ciera	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1993	Oldsmobile	Cutlass Cruiser	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1992	Chevrolet	Lumina	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1991	Buick	LeSabre	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1991	Cadillac	DeVille	Rear	Bore: 7/8 In.; 8.86 In. x 1.77 In. Brakes; Exc. Heavy Duty Brakes
1991	Cadillac	Fleetwood	Rear	Bore: 7/8 In.; 8.86 In. x 1.77 In. Brakes; Exc. Heavy Duty Brakes
1991	Oldsmobile	Delta 88	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1991	Pontiac	Bonneville	Rear	Bore: 7/8 In.; Exc. Export
1990	Buick	LeSabre	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1990	Cadillac	DeVille	Rear	Bore: 7/8 In.; 8.86 In. x 1.77 In. Brakes; Exc. Heavy Duty Brakes
1990	Cadillac	Fleetwood	Rear	Bore: 7/8 In.; 8.86 In. x 1.77 In. Brakes; Exc. Heavy Duty Brakes
1990	Oldsmobile	98	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1990	Oldsmobile	Delta 88	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1990	Pontiac	Bonneville	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1989	Buick	LeSabre	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1989	Cadillac	DeVille	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1989	Cadillac	Fleetwood	Rear	Bore: 7/8 In.; Exc. Commercial Chassis
1989	Oldsmobile	98	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1989	Oldsmobile	Delta 88	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1989	Pontiac	Bonneville	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1988	Buick	LeSabre	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1988	Cadillac	DeVille	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1988	Cadillac	Fleetwood	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1988	Oldsmobile	98	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1988	Oldsmobile	Delta 88	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1988	Pontiac	Bonneville	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1987	Buick	LeSabre	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1987	Cadillac	DeVille	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1987	Cadillac	Fleetwood	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1987	Oldsmobile	98	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1987	Oldsmobile	Delta 88	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1987	Pontiac	Bonneville	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1986	Buick	LeSabre	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.
1986	Oldsmobile	Delta 88	Rear	Fits drum brake wheel cylinders requiring 7/8" bore size brake master cylinder.

* 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:

112341134.62050172-153918012582203767733936784-36050F112341W-82050W906575WC13936

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