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Dorman 300-398 Power Steering Pump PulleyOE Quality 60-Day Returns
Part #: 300-398

Dorman 300-398 Power Steering Pump Pulley

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49 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Cadillac, Chevrolet, GMC, and Buick, XTS, Equinox, Terrain, LaCrosse, SRX, Impala Limited, Captiva Sport, Impala, and Allure
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Power Steering Pump Pulley for GM Applications

This Dorman power steering pump pulley is a standard replacement for select Cadillac, Chevrolet, Buick, and GMC vehicles. Built from steel with a black finish, it matches the original fit and function for applications that use a 6-groove V-belt setup and press-fit mounting.

Part number 300-398 is made for direct replacement service on vehicles such as the Chevrolet Equinox, GMC Terrain, and Cadillac SRX. It is engineered to restore proper pulley alignment and belt drive operation on the specified applications.

Key Features

  • Steel construction for durable everyday service
  • Black finish
  • 6-groove design for V-belt systems
  • Press-fit mount type with a .663 in pulley bore
  • 5 in outside diameter and 1.2 in width
  • Standard replacement part for OE-style fit and function
  • Part number 300-398

Detailed Description

Dorman 300-398 is a power steering pump pulley engineered to match the original pulley used on specified GM platforms. The steel body and press-fit design support reliable pulley engagement, while the 6-groove profile helps maintain correct belt tracking in the power steering drive system. This part cross-references GM 12625446 for the same application. It is a direct-fit replacement for vehicles including the Cadillac XTS, Chevrolet Impala, Chevrolet Equinox, GMC Terrain, Buick LaCrosse, and Cadillac SRX.

What It Helps Fix

  • Worn or damaged power steering pump pulley surfaces
  • Belt slip caused by pulley wear or misalignment
  • Noisy operation from a failing pulley
  • Loss of proper belt drive engagement at the power steering pump
  • Replacement needs after pulley cracking, bending, or corrosion

Installation Notes and Tips

Press-fit installation requires the correct removal and installation tools to avoid damaging the pump shaft or new pulley. Verify the pulley bore, groove count, outside diameter, and belt type before installation. Confirm vehicle-specific fitment for your Cadillac XTS, Chevrolet Equinox, or GMC Terrain before ordering. Part number 300-398 should be installed on the specified applications only.

Quality Assurance

This Dorman replacement pulley is manufactured from quality materials and built to match the fit and function of the original component on listed applications. It is a standard replacement part intended for dependable service in the power steering system.

BrandDorman
Part Number300-398
Belt TypeV-Belt
ColorBlack
Groove Quantity6
Installation Instructions IncludedNo
Item GradeStandard Replacement
MaterialSteel
Mount TypePress Fit
Mounting Hardware IncludedNo
Mounting Hole Quantity1
Outside Diameter5
Package ContentsPulley
Pulley Bore.663 in
Width1.2

This part fits 49 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2019CadillacXTS3.6LV6N/A
2018CadillacXTS3.6LV6N/A
2017CadillacXTS3.6LV6N/A
2017ChevroletEquinox3.6LV6N/A
2017GMCTerrain3.6LV6N/A
2016BuickLaCrosse3.6LV6N/A
2016CadillacSRX3.6LV6N/A
2016CadillacXTS3.6LV6N/A
2016ChevroletEquinox3.6LV6N/A
2016ChevroletImpala Limited3.6LV6N/A
2016GMCTerrain3.6LV6N/A
2015BuickLaCrosse3.6LV6N/A
2015CadillacSRX3.6LV6N/A
2015CadillacXTS3.6LV6N/A
2015ChevroletCaptiva Sport3.0LV6N/A
2015ChevroletEquinox3.6LV6N/A
2015ChevroletImpala Limited3.6LV6N/A
2015GMCTerrain3.6LV6N/A
2014BuickLaCrosse3.6LV6N/A
2014CadillacSRX3.6LV6N/A
2014CadillacXTS3.6LV6N/A
2014ChevroletCaptiva Sport3.0LV6N/A
2014ChevroletEquinox3.6LV6N/A
2014ChevroletImpala Limited3.6LV6N/A
2014GMCTerrain3.6LV6N/A
2013BuickLaCrosse3.6LV6N/A
2013CadillacSRX3.6LV6N/A
2013CadillacXTS3.6LV6N/A
2013ChevroletCaptiva Sport3.0LV6N/A
2013ChevroletEquinox3.6LV6N/A
2013ChevroletImpala3.6LV6N/A
2013GMCTerrain3.6LV6N/A
2012BuickLaCrosse3.6LV6N/A
2012CadillacSRX3.6LV6N/A
2012ChevroletCaptiva Sport3.0LV6N/A
2012ChevroletEquinox3.0LV6N/A
2012ChevroletImpala3.6LV6N/A
2012GMCTerrain3.0LV6N/A
2011BuickLaCrosse3.6LV6N/A
2011CadillacSRX3.0LV6N/A
2011ChevroletCaptiva Sport3.0LV6N/A
2011ChevroletEquinox3.0LV6N/A
2011GMCTerrain3.0LV6N/A
2010BuickAllure3.0LV6N/A
2010BuickLaCrosse3.0LV6N/A
2010BuickLaCrosse3.6LV6N/A
2010CadillacSRX3.0LV6N/A
2010ChevroletEquinox3.0LV6N/A
2010GMCTerrain3.0LV6N/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:

12625446

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

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