Dorman W37781 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
$16.49
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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 |
|---|---|---|---|---|---|
| 2000 | Cadillac | Escalade | Rear | Bore: 1 In. | |
| 2000 | Chevrolet | Express 2500 | DIESEL | Rear | Bore: 1 In. |
| 2000 | Chevrolet | Express 3500 | Extended Cargo Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 2000 | Chevrolet | Express 3500 | Extended Passenger Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 2000 | Chevrolet | Express 3500 | Standard Cargo Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 2000 | Chevrolet | Express 3500 | Standard Passenger Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 2000 | Chevrolet | K1500 | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 2000 | Chevrolet | Tahoe | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 2000 | GMC | Savana 2500 | DIESEL | Rear | Bore: 1 In. |
| 2000 | GMC | Savana 3500 | Extended Cargo Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 2000 | GMC | Savana 3500 | Extended Passenger Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 2000 | GMC | Savana 3500 | Standard Cargo Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 2000 | GMC | Savana 3500 | Standard Passenger Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 2000 | GMC | Yukon | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 1999 | Cadillac | Escalade | Rear | Bore: 1 In. | |
| 1999 | Chevrolet | C1500 | Rear | Bore: 1 In.; 11.15 In. x 2.75 In. Brakes | |
| 1999 | Chevrolet | C1500 Suburban | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 1999 | Chevrolet | Express 2500 | DIESEL | Rear | Bore: 1 In. |
| 1999 | Chevrolet | Express 3500 | Extended Cargo Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 1999 | Chevrolet | Express 3500 | Extended Passenger Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 1999 | Chevrolet | Express 3500 | Standard Cargo Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 1999 | Chevrolet | Express 3500 | Standard Passenger Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 1999 | Chevrolet | K1500 | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 1999 | Chevrolet | K1500 Suburban | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 1999 | Chevrolet | Tahoe | Rear | Bore: 1 In.; 11 In. Brakes | |
| 1999 | GMC | C1500 | Rear | Bore: 1 In.; 11.15 In. x 2.75 In. Brakes | |
| 1999 | GMC | C1500 Suburban | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 1999 | GMC | K1500 | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 1999 | GMC | K1500 Suburban | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 1999 | GMC | Savana 2500 | DIESEL | Rear | Bore: 1 In. |
| 1999 | GMC | Savana 3500 | Extended Cargo Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 1999 | GMC | Savana 3500 | Extended Passenger Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 1999 | GMC | Savana 3500 | Standard Cargo Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 1999 | GMC | Savana 3500 | Standard Passenger Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 1999 | GMC | Yukon | Rear | Bore: 1 In.; 11 In. Brakes | |
| 1998 | Chevrolet | C1500 | Rear | Bore: 1 In.; 11.15 In. x 2.75 In. Brakes | |
| 1998 | Chevrolet | C1500 Suburban | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 1998 | Chevrolet | C2500 | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 1998 | Chevrolet | C2500 Suburban | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 1998 | Chevrolet | Express 2500 | DIESEL | Rear | Bore: 1 In. |
| 1998 | Chevrolet | Express 3500 | Extended Cargo Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 1998 | Chevrolet | Express 3500 | Extended Passenger Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 1998 | Chevrolet | Express 3500 | Standard Cargo Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 1998 | Chevrolet | Express 3500 | Standard Passenger Van | Rear | w/Single Rear Wheel (SRW); Bore: 1 In. |
| 1998 | Chevrolet | K1500 | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 1998 | Chevrolet | K1500 Suburban | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 1998 | Chevrolet | K2500 | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 1998 | Chevrolet | K2500 Suburban | Rear | Bore: 1 In.; 11 In. Brakes; w/RPO Code JB6 (Power Brakes, Vacuum Boosted); w/RPO Code JD6 (Power Brakes, Hydraulically Boosted, Front Disc, Rear Drum, Diesel) | |
| 1998 | Chevrolet | Tahoe | Rear | Bore: 1 In.; 11 In. Brakes | |
| 1998 | GMC | C1500 | Rear | Bore: 1 In.; 11.15 In. x 2.75 In. Brakes |
Product Specifications
| Bleeder Screw Cap Included: | No |
|---|---|
| Bleeder Screw Included: | Yes |
| Brake Component Inlet Thread Size: | 3/8-24 in |
| Inside Diameter: | 1 in |
| Material: | Cast Iron |
| Package Contents: | 1 Drum Brake Wheel Cylinder |
| Package Quantity: | 1 |
| Packaging Type: | Box |
| Thread Diameter: | 3/8 |
OE Numbers
| DIRECT OE CROSS | |
|---|---|
| 18014081 | GENERAL MOTORS |
| 18060090 | GENERAL MOTORS |