OE Quality
60-Day Returns

Dorman 300-550 Power Steering Pump Pulley
Overview of Dorman Power Steering Pump Pulley 300-550
The Dorman 300-550 power steering pump pulley is designed specifically for Nissan Altima models, providing a reliable replacement component for your vehicle's steering system. Crafted from durable steel and finished in black, this pulley ensures consistent performance and longevity.
- Constructed from sturdy steel material for durability
- Black finish for corrosion resistance
- 6-groove design compatible with serpentine belts
- Outside diameter measures 5.563 inches
- Single mounting hole with a 12.7 mm pulley bore
- Standard replacement grade for reliable function
- Package includes the pulley only; mounting hardware and installation instructions not included
Detailed Product Description
The Dorman 300-550 power steering pump pulley is engineered to meet the specifications required for Nissan Altima vehicles. Its steel construction offers strength and resistance to wear, while the black coating helps protect against rust and environmental damage. Featuring six grooves, this pulley is designed to work seamlessly with serpentine belts, ensuring proper belt alignment and tension. The 5.563-inch outside diameter and 12.7 mm bore size provide a precise fit for the power steering pump shaft, contributing to smooth steering operation.
Compatible Applications and Common Issues Addressed
This power steering pump pulley is compatible with Nissan Altima models requiring a 6-groove serpentine belt pulley. It is intended as a direct replacement part to resolve issues such as:
- Worn or damaged pulley grooves causing belt slippage
- Corroded or rusted pulley surfaces affecting belt grip
- Misaligned pulley leading to steering pump noise or failure
- Broken or cracked pulley compromising power steering function
- Excessive pulley wear resulting in belt wear or failure
Installation Notes and Tips
When installing the Dorman 300-550 power steering pump pulley, ensure the pulley bore aligns correctly with the power steering pump shaft. Since mounting hardware and installation instructions are not included, it is recommended to use the original hardware or appropriate replacements and consult a professional service manual or technician for proper installation procedures. Proper belt tension and alignment should be verified after installation to prevent premature wear.
Quality Assurance and Warranty
Dorman power steering pump pulleys are manufactured to meet standard replacement quality requirements, providing dependable performance for Nissan Altima vehicles. While specific warranty details are not provided, Dorman products typically undergo quality control testing to ensure fit and function. For additional warranty information, refer to Dorman's official documentation or contact the manufacturer directly.
| Brand | Dorman |
| Part Number | 300-550 |
| Belt Type | Serpentine |
| Color | Black |
| Groove Quantity | 6 |
| Installation Instructions Included | No |
| Item Grade | Standard Replacement |
| Material | Steel |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 1 |
| Outside Diameter | 5.563 |
| Package Contents | Pulley |
| Pulley Bore | 12.7 |
This part fits 9 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2001 | Nissan | Altima | N/A | |||
| 2000 | Nissan | Altima | N/A | |||
| 1999 | Nissan | Altima | N/A | |||
| 1998 | Nissan | Altima | N/A | |||
| 1997 | Nissan | Altima | N/A | |||
| 1996 | Nissan | Altima | 2.4L | L4 | N/A | |
| 1995 | Nissan | Altima | N/A | |||
| 1994 | Nissan | Altima | N/A | |||
| 1993 | Nissan | Altima | 2.4L | L4 | 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.