Dorman W37778 Wheel Cylinder
Confirm Fitment Before You Buy
Not sure it fits? Message Year/Make/Model/Engine (2WD/4WD if applicable) and we’ll help confirm compatibility.
Why buy from Koskowski Automotive?
• 50+ years (since 1972) • Dorman Authorized Seller • Fast shipping • Easy returns
Regular price
$14.80
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Vehicle Fitment: Use the table below to match your exact configuration. If you don’t see your exact setup, message us before ordering.
Product Description
This direct replacement drum brake wheel cylinder was specifically engineered to match the fit, function and performance of the original wheel cylinder on particular vehicles. It is manufactured and tested for quality assurance.
- Ideal replacement - specifically engineered to be direct match for original drum brake wheel cylinder on particular vehicles
- Cost-effective fix - replacement of cylinder while servicing drum brakes is fastest, surest way to ensure brake performance
- Quality materials - made with high-quality EPDM rubber cups and boots for long-lasting performance
- Professionally tested - wheel cylinder bores are surface-tested to ensure an optimum sealing surface for the pressure cups
Detailed Applications
| Year | Make | Model | Configuration | Positions | Application Notes |
|---|---|---|---|---|---|
| 2002 | Chevrolet | Cavalier | Rear | Bore: 11/16 In.; w/Ride and Handling Package; w/Softride Package | |
| 2002 | Pontiac | Sunfire | Rear | Bore: 11/16 In. | |
| 2001 | Chevrolet | Cavalier | Rear | Bore: 11/16 In.; w/Ride and Handling Package; w/Softride Package | |
| 2001 | Pontiac | Sunfire | Rear | Bore: 11/16 In. | |
| 2000 | Chevrolet | Cavalier | Rear | Bore: 11/16 In.; wo/RPO Code FE0 (Active Suspension) | |
| 2000 | Pontiac | Sunfire | Rear | Bore: 11/16 In. | |
| 1999 | Chevrolet | Cavalier | Rear | Bore: 11/16 In.; wo/RPO Code FE0 (Active Suspension) | |
| 1999 | Pontiac | Sunfire | Rear | Bore: 11/16 In. | |
| 1998 | Buick | Skylark | Rear | Bore: 11/16 In. | |
| 1998 | Chevrolet | Cavalier | Rear | Bore: 11/16 In.; wo/RPO Code FE0 (Active Suspension) | |
| 1998 | Oldsmobile | Achieva | Rear | Bore: 11/16 In. | |
| 1998 | Pontiac | Grand Am | Rear | Bore: 11/16 In. | |
| 1998 | Pontiac | Sunfire | Rear | Bore: 11/16 In. | |
| 1997 | Buick | Skylark | Rear | Bore: 11/16 In. | |
| 1997 | Chevrolet | Cavalier | Rear | Bore: 11/16 In.; w/Ride and Handling Package; w/Softride Package | |
| 1997 | Oldsmobile | Achieva | Rear | Bore: 11/16 In. | |
| 1997 | Pontiac | Grand Am | Rear | Bore: 11/16 In. | |
| 1997 | Pontiac | Sunfire | Rear | Bore: 11/16 In. | |
| 1996 | Buick | Skylark | Rear | Bore: 11/16 In. | |
| 1996 | Chevrolet | Beretta | Rear | Bore: 11/16 In. | |
| 1996 | Chevrolet | Cavalier | Rear | Bore: 11/16 In.; w/Ride and Handling Package; w/Softride Package | |
| 1996 | Chevrolet | Corsica | Rear | Bore: 11/16 In. | |
| 1996 | Oldsmobile | Achieva | Rear | Bore: 11/16 In. | |
| 1996 | Pontiac | Grand Am | Rear | Bore: 11/16 In. | |
| 1996 | Pontiac | Sunfire | Rear | Bore: 11/16 In. | |
| 1995 | Buick | Skylark | Rear | Bore: 11/16 In. | |
| 1995 | Chevrolet | Beretta | Rear | Bore: 11/16 In. | |
| 1995 | Chevrolet | Cavalier | Rear | Bore: 11/16 In.; w/Ride and Handling Package; w/Softride Package | |
| 1995 | Chevrolet | Corsica | Rear | Bore: 11/16 In. | |
| 1995 | Oldsmobile | Achieva | Rear | Bore: 11/16 In. | |
| 1995 | Pontiac | Grand Am | Rear | Bore: 11/16 In. | |
| 1995 | Pontiac | Sunfire | Rear | Bore: 11/16 In. | |
| 1994 | Buick | Skylark | Rear | Bore: 11/16 In. | |
| 1994 | Chevrolet | Beretta | Rear | Bore: 11/16 In. | |
| 1994 | Chevrolet | Cavalier | Rear | Bore: 11/16 In. | |
| 1994 | Chevrolet | Corsica | Rear | Bore: 11/16 In. | |
| 1994 | Oldsmobile | Achieva | Rear | Bore: 11/16 In. | |
| 1994 | Pontiac | Grand Am | Rear | Bore: 11/16 In. | |
| 1994 | Pontiac | Sunbird | Rear | Bore: 11/16 In. | |
| 1993 | Buick | Skylark | Rear | Bore: 11/16 In. | |
| 1993 | Chevrolet | Beretta | Rear | Bore: 11/16 In. | |
| 1993 | Chevrolet | Cavalier | Rear | Bore: 11/16 In. | |
| 1993 | Chevrolet | Corsica | Rear | Bore: 11/16 In. | |
| 1993 | Oldsmobile | Achieva | Rear | Bore: 11/16 In. | |
| 1993 | Pontiac | Grand Am | Rear | Bore: 11/16 In. | |
| 1993 | Pontiac | Sunbird | Rear | Bore: 11/16 In. | |
| 1992 | Buick | Century | Coupe | Rear | Bore: 11/16 In. |
| 1992 | Buick | Century | Sedan | Rear | Bore: 11/16 In. |
| 1992 | Buick | Skylark | Rear | Bore: 11/16 In. | |
| 1992 | Chevrolet | Beretta | Rear | Bore: 11/16 In. |
Product Specifications
| Bleeder Screw Cap Included: | No |
|---|---|
| Bleeder Screw Included: | Yes |
| Brake Component Inlet Thread Size: | (2) 7/16-24 |
| Inside Diameter: | 0.688 in |
| Material: | Cast Iron |
| Package Contents: | 1 Drum Brake Wheel Cylinder |
| Package Quantity: | 1 |
| Packaging Type: | Box |
| Thread Diameter: | 7/16 |
OE Numbers
| DIRECT OE CROSS | |
|---|---|
| 18014171 | GENERAL MOTORS |
| 18060092 | GENERAL MOTORS |