HomeSteering > Power Steering Hoses, Pumps, and Related ComponentsDorman 300-124 Power Steering Pump Pulley
Part #: 300-124

Dorman 300-124 Power Steering Pump Pulley

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⚙️ 45 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Cadillac, Pontiac, and Oldsmobile, DeVille, Bonneville, Seville, Aurora, Eldorado, and Allante
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Durable Power Steering Pump Pulley for Cadillac, Oldsmobile, Pontiac

The Dorman 300-124 power steering pump pulley is engineered to restore proper belt alignment and power steering function in select Cadillac, Oldsmobile, and Pontiac vehicles. Designed with precision, this steel pulley ensures reliable performance for models including Allante, Aurora, Bonneville, DeVille, Eldorado, and Seville.

  • Constructed from durable steel with a black finish for corrosion resistance
  • Features 6 grooves compatible with serpentine belts
  • 6.5-inch outside diameter for exact fitment
  • Single mounting hole with a 0.663-inch bore diameter
  • Standard replacement grade for dependable operation
  • Package includes the pulley only; mounting hardware and installation instructions not included

Product Details and Specifications

The Dorman 300-124 power steering pump pulley is designed to meet OEM specifications for a precise fit and function. Its steel construction provides strength and durability, while the black coating helps resist wear and corrosion. The pulley’s 6-groove design is compatible with serpentine belts commonly used in Cadillac Allante, Oldsmobile Aurora, Pontiac Bonneville, and other related models. With a 6.5-inch outside diameter and a 0.663-inch bore, this pulley aligns correctly with the power steering pump shaft, ensuring smooth belt operation and consistent steering performance.

Compatible Vehicles and Applications

This power steering pump pulley is compatible with the following makes and models:

  • Cadillac Allante, DeVille, Eldorado, Seville
  • Oldsmobile Aurora
  • Pontiac Bonneville

Use the Dorman 300-124 pulley to replace worn or damaged pulleys that cause belt slippage or steering issues in these vehicles.

Common Issues Addressed by This Pulley

  • Power steering belt slippage due to worn or damaged pulley grooves
  • Noise or squealing from misaligned or deteriorated pulleys
  • Reduced power steering pump efficiency affecting steering response
  • Excessive wear on serpentine belts caused by pulley damage
  • Vibration or wobbling from bent or unbalanced pulleys

Installation Notes and Tips

Installation of the Dorman 300-124 power steering pump pulley requires removal of the old pulley and proper alignment on the power steering pump shaft. Note that mounting hardware and installation instructions are not included, so having the correct tools and reference to a vehicle-specific repair manual is recommended. 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

Dorman power steering pump pulleys are manufactured to meet standard replacement quality, providing reliable performance for your vehicle’s steering system. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in material and workmanship. For exact warranty terms, consult the product packaging or Dorman’s official resources.

BrandDorman
Part Number300-124
Belt TypeSerpentine
ColorBlack
Groove Quantity6
Installation Instructions IncludedNo
Item GradeStandard Replacement
MaterialSteel
Mounting Hardware IncludedNo
Mounting Hole Quantity1
Outside Diameter6.5
Package ContentsPulley
Pulley Bore0.663

This part fits 45 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005CadillacDeVilleN/A16.8 mm I.D. Shaft
2005PontiacBonneville4.6LV8N/A16.8 mm I.D. Shaft
2004CadillacDeVilleN/A16.8 mm I.D. Shaft
2004CadillacSevilleN/A16.8 mm I.D. Shaft
2004PontiacBonneville4.6LV8N/A16.8 mm I.D. Shaft
2003CadillacDeVilleN/A16.8 mm I.D. Shaft
2003CadillacSevilleN/A16.8 mm I.D. Shaft
2003OldsmobileAuroraN/A16.8 mm I.D. Shaft
2002CadillacDeVilleN/A16.8 mm I.D. Shaft
2002CadillacEldoradoN/A16.8 mm I.D. Shaft
2002CadillacSevilleN/A16.8 mm I.D. Shaft
2002OldsmobileAurora4.0LV8N/A16.8 mm I.D. Shaft
2001CadillacDeVilleN/A16.8 mm I.D. Shaft
2001CadillacEldoradoN/A16.8 mm I.D. Shaft
2001CadillacSevilleN/A16.8 mm I.D. Shaft
2001OldsmobileAurora4.0LV8N/A16.8 mm I.D. Shaft
2000CadillacDeVilleN/A16.8 mm I.D. Shaft
2000CadillacEldoradoN/A16.8 mm I.D. Shaft
2000CadillacSevilleN/A16.8 mm I.D. Shaft
1999CadillacDeVilleN/A16.8 mm I.D. Shaft
1999CadillacEldoradoN/A16.8 mm I.D. Shaft
1999CadillacSevilleN/A16.8 mm I.D. Shaft
1999OldsmobileAuroraN/A16.8 mm I.D. Shaft
1998CadillacDeVilleN/A16.8 mm I.D. Shaft
1998CadillacEldoradoN/A16.8 mm I.D. Shaft
1998CadillacSevilleN/A16.8 mm I.D. Shaft
1998OldsmobileAuroraN/A16.8 mm I.D. Shaft
1997CadillacDeVilleN/A16.8 mm I.D. Shaft
1997CadillacEldoradoN/A16.8 mm I.D. Shaft
1997CadillacSevilleN/A16.8 mm I.D. Shaft
1997OldsmobileAuroraN/A16.8 mm I.D. Shaft
1996CadillacDeVilleN/A16.8 mm I.D. Shaft
1996CadillacEldoradoN/A16.8 mm I.D. Shaft
1996CadillacSevilleN/A16.8 mm I.D. Shaft
1996OldsmobileAuroraN/A16.8 mm I.D. Shaft
1995CadillacDeVille4.6LV8N/A16.8 mm I.D. Shaft
1995CadillacEldoradoN/A16.8 mm I.D. Shaft
1995CadillacSevilleN/A16.8 mm I.D. Shaft
1995OldsmobileAuroraN/A16.8 mm I.D. Shaft
1994CadillacDeVille4.6LV8N/A16.8 mm I.D. Shaft
1994CadillacEldoradoN/A16.8 mm I.D. Shaft
1994CadillacSevilleN/A16.8 mm I.D. Shaft
1993CadillacAllanteN/A16.8 mm I.D. Shaft
1993CadillacEldorado4.6LV8N/A16.8 mm I.D. Shaft
1993CadillacSeville4.6LV8N/A16.8 mm I.D. Shaft

* 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:

125585293P15166

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.