Dorman 300-931 Engine Water Pump Pulley 85-91 Buick Skylark Pontiac Grand Am
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
$46.17
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.
Damaged your engine water pump pulley? This pulley is a direct replacement for the original manufacturer's part on specific vehicle years, makes and models, restoring proper performance.
- Direct replacement - this engine water pump pulley matches the fit and function of the original part on specific vehicles
- Durable design - built to withstand the elements and road debris
- Thoroughly tested - must pass strict standards to ensure reliable longevity
- Trustworthy quality - backed by team of engineers and inspectors in United States
Vehicle Fitment
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1986-1991 | Buick | Skylark | 2.5L L4 | |
| 1986-1987 | Buick | Somerset | 2.5L L4 | |
| 1985 | Buick | Somerset Regal | 2.5L L4 | |
| 1985-1987 | Oldsmobile | Calais | 2.5L L4 | |
| 1988-1991 | Oldsmobile | Cutlass Calais | 2.5L L4 | |
| 1985-1991 | Pontiac | Grand Am | 2.5L L4 |
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 | 300-931 |
| UPC | 019495227526 |
| Material | Steel |
| Color | Black |
| Width | 2.49 in. |
| Groove Quantity | 5 |
| Attachment Type | Bolt On |
| Belt Type | Serpentine |
| Grade Type | Standard Replacement |
| Bolt Hole Diameter | 0.35 in |
| Bolt Hole Quantity | 1 |
| Depth | 1.969 in |
| Diameter | 4.15 in |
| Housing Color | Black |
| Installation Hardware Included | No |
| Installation Instructions Included | No |
| Oversized Pulley | No |
| Package Contents | Pulley |
| Pulley Attachment Type | Bolt On |
| Pulley Type/Grooves | V-belt/serpentine |
| Undersize Pulley | No |
| Country of Origin | China |
| Warranty | Limited Lifetime |
OE & Interchange Numbers
| 10042037 | General Motors (OE) |
|---|