Dorman W37423 Rear Drum Brake Wheel Cylinder 79-93 Buick Riviera 18003905
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
$15.91
Select your vehicle at the top of the page to check fitment.
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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.
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
Vehicle Fitment
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1979-1985 | Buick | Riviera | Rear | Bore: 3/4 In. |
| 1987-1993 | Chevrolet | LLV | Rear | Bore: 3/4 In. |
| 1979-1985 | Oldsmobile | Toronado | Rear | Bore: 3/4 In. |
Please confirm the part number and your vehicle's year, make, model and engine before ordering. Questions? Message us with your VIN and we'll check fitment for you.
Specifications
| Brand | Dorman |
|---|---|
| Part Number | W37423 |
| UPC | 082702410592 |
| Placement | Rear |
| Material | Cast Iron |
| Air Vent (Bleeder Valve) | Yes |
| Brake Component Inlet Thread Size | M10 X 1.0 |
| Inside Diameter | 0.75 in |
| Package Contents | 1 Drum Brake Wheel Cylinder |
| Thread Diameter | 10 mm |
| Thread Pitch | 1.0 |
| Country of Origin | China |
| Warranty | Limited Lifetime |
OE & Interchange Numbers
| 18003905 | General Motors (OE) |
|---|---|
| 33799 | Interchange |
| WC370268 | Interchange |
| 784-36047 | Interchange |
| 18E160 | Interchange |
| 375-45010 | Interchange |
| 134.62047 | Interchange |
| WC13799 | Interchange |
| F98905 | Interchange |
| W-82047 | Interchange |
| WC98905 | Interchange |
| 84-36047 | Interchange |
| 135.62047 | Interchange |
| W906464 | Interchange |