OE Quality
60-Day Returns

Dorman 300-127 Power Steering Pump Pulley
Overview of Dorman Power Steering Pump Pulley 300-127
The Dorman 300-127 power steering pump pulley is designed for reliable performance in select Cadillac models. Engineered with a composite material and a serpentine belt design, this pulley supports smooth steering operation for vehicles like the Cadillac Allante, DeVille, Eldorado, Fleetwood, and Seville.
- Constructed from durable composite material for strength and longevity
- Black finish with 6 grooves to accommodate serpentine belts
- Outer diameter measures 5.2 inches for precise fitment
- Single mounting hole with a bore size of 0.7472 inches
- Standard replacement grade for dependable restoration
- Package includes the pulley only; mounting hardware and instructions are not included
Detailed Product Description
The Dorman 300-127 power steering pump pulley is a direct replacement part designed specifically for Cadillac vehicles including the Allante, DeVille, Eldorado, Fleetwood, and Seville models. Made from composite material, this pulley offers a balance of durability and weight savings compared to metal alternatives. Its black color and six-groove design are optimized for serpentine belt systems, ensuring proper belt alignment and tension. The 5.2-inch outer diameter and 0.7472-inch bore size provide an exact fit to maintain the integrity of the power steering pump assembly. This pulley is classified as a standard replacement item, making it suitable for restoring factory performance without modification.
Common Applications and Issues Addressed
- Replacement of worn or damaged power steering pump pulleys
- Resolving belt slippage or misalignment in serpentine belt systems
- Eliminating noise caused by pulley wear or imbalance
- Restoring proper power steering pump function in Cadillac Allante, DeVille, Eldorado, Fleetwood, and Seville
- Addressing pulley corrosion or structural failure in older vehicles
Installation Notes and Tips
Installation of the Dorman 300-127 pulley requires removal of the existing pulley from the power steering pump. Since mounting hardware and installation instructions are not included, it is recommended to have appropriate tools and reference a service manual specific to the Cadillac model. Care should be taken to align the pulley grooves with the serpentine belt correctly to prevent premature belt wear. Professional installation is advised if unfamiliar with power steering system components.
Quality Assurance and Warranty
Dorman power steering pump pulleys meet industry standards for standard replacement parts. While mounting hardware and instructions are not provided, the product is manufactured to fit specified Cadillac models accurately. Warranty coverage details should be confirmed through the original purchase source or Dorman directly, as warranty terms may vary.
| Brand | Dorman |
|---|---|
| Part Number | 300-127 |
| Belt Type | Serpentine |
| Color | Black |
| Groove Quantity | 6 |
| Installation Instructions Included | No |
| Item Grade | Standard Replacement |
| Material | Composite |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 1 |
| Outer Diameter (in) | 5.2 in |
| Package Contents | Pulley |
| Pulley Bore | 0.7472 |
This part fits 15 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1995 | Cadillac | DeVille | 4.9L | V8 | N/A | |
| 1994 | Cadillac | DeVille | 4.9L | V8 | N/A | |
| 1993 | Cadillac | DeVille | N/A | |||
| 1993 | Cadillac | Eldorado | 4.9L | V8 | N/A | |
| 1993 | Cadillac | Seville | 4.9L | V8 | N/A | |
| 1992 | Cadillac | Allante | N/A | |||
| 1992 | Cadillac | DeVille | N/A | |||
| 1992 | Cadillac | Eldorado | N/A | |||
| 1992 | Cadillac | Fleetwood | 4.9L | V8 | N/A | |
| 1992 | Cadillac | Seville | N/A | |||
| 1991 | Cadillac | Allante | N/A | |||
| 1991 | Cadillac | DeVille | N/A | |||
| 1991 | Cadillac | Eldorado | N/A | |||
| 1991 | Cadillac | Fleetwood | 4.9L | V8 | N/A | |
| 1991 | Cadillac | Seville | N/A |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.