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Dorman 300-142 Power Steering Pump Pulley
Overview of Dorman Power Steering Pump Pulley 300-142
The Dorman 300-142 power steering pump pulley is designed for reliable performance in select Cadillac models. Engineered from durable steel with a black finish, this pulley is compatible with Cadillac CTS, SRX, and STS vehicles, ensuring proper fit and function.
- Constructed from sturdy steel material for durability
- Black color finish for corrosion resistance
- 6-groove design compatible with serpentine belts
- Outside diameter measures 5.35 inches
- Single mounting hole for secure attachment
- Standard replacement grade for dependable operation
- Includes pulley only; mounting hardware and installation instructions not included
- Pulley bore diameter of 0.6622 inches
Detailed Product Description
The Dorman 300-142 power steering pump pulley is a direct replacement part engineered to meet the specifications of original equipment. Its steel construction provides strength and resistance to wear, while the black finish helps protect against rust and corrosion. The 6-groove design is specifically made for serpentine belt systems, common in Cadillac CTS, SRX, and STS models. With an outside diameter of 5.35 inches and a pulley bore of 0.6622 inches, this pulley ensures proper belt alignment and tension for efficient power steering pump operation. The single mounting hole allows for straightforward installation on compatible power steering pumps.
Compatible Vehicles and Applications
- Cadillac CTS power steering pump pulley replacement
- Cadillac SRX compatible power steering pump pulley
- Cadillac STS power steering pump pulley fitment
Common Issues Addressed by This Pulley
- Worn or damaged pulley causing belt slippage
- Corroded pulley affecting power steering pump performance
- Misaligned pulley leading to serpentine belt wear
- Noise or vibration from faulty pulley operation
- Replacement of broken or cracked pulley components
Installation Notes and Tips
Installation of the Dorman 300-142 power steering pump pulley requires removal of the old pulley and proper alignment of the new one on the power steering pump shaft. Since mounting hardware and installation instructions are not included, it is recommended to have appropriate tools and mechanical knowledge before attempting installation. Ensure the serpentine belt is properly routed over the 6-groove pulley to maintain correct tension and avoid premature belt wear.
Quality Assurance and Warranty
This Dorman power steering pump pulley is manufactured to meet standard replacement quality requirements. While mounting hardware and instructions are not provided, the part is designed to offer reliable service life when installed correctly. Warranty coverage details should be confirmed through the original purchase source or Dorman's official warranty policy.
| Brand | Dorman |
| Part Number | 300-142 |
| 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 | 5.35 |
| Package Contents | Pulley |
| Pulley Bore | .6622 |
This part fits 21 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2011 | Cadillac | STS | N/A | |||
| 2010 | Cadillac | STS | 3.6L | V6 | N/A | |
| 2009 | Cadillac | CTS | 3.6L | V6 | N/A | |
| 2009 | Cadillac | SRX | 3.6L | V6 | N/A | |
| 2009 | Cadillac | STS | 3.6L | V6 | N/A | |
| 2008 | Cadillac | CTS | N/A | |||
| 2008 | Cadillac | SRX | 3.6L | V6 | N/A | |
| 2008 | Cadillac | STS | 3.6L | V6 | N/A | |
| 2007 | Cadillac | CTS | 2.8L | V6 | N/A | |
| 2007 | Cadillac | CTS | 3.6L | V6 | N/A | |
| 2007 | Cadillac | SRX | 3.6L | V6 | N/A | |
| 2007 | Cadillac | STS | 3.6L | V6 | N/A | |
| 2006 | Cadillac | CTS | 2.8L | V6 | N/A | |
| 2006 | Cadillac | CTS | 3.6L | V6 | N/A | |
| 2006 | Cadillac | SRX | 3.6L | V6 | N/A | |
| 2006 | Cadillac | STS | 3.6L | V6 | N/A | |
| 2005 | Cadillac | CTS | 3.6L | V6 | N/A | |
| 2005 | Cadillac | SRX | 3.6L | V6 | N/A | |
| 2005 | Cadillac | STS | 3.6L | V6 | N/A | |
| 2004 | Cadillac | CTS | 3.6L | V6 | N/A | |
| 2004 | Cadillac | SRX | 3.6L | V6 | 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.