GM Genuine Parts Differential Drive Pinion Gear Inner Bearing
OE
Pack of 1

GM Genuine Parts Differential Drive Pinion Gear Inner Bearing

GM Part #25824251

ACDelco Part #S1381

MSRP$175.14*

GM Genuine Parts Differential Pinion Bearings are designed, engineered, and tested to rigorous standards, and are backed by General Motors.

  • Tapered roller bearing elements that support and allow the pinion gear to rotate within the axle or final drive housing
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors

Pack of 1

About this product

GM Genuine Parts Differential Pinion Bearings are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These bearings are tapered roller bearing elements that support and allow the pinion gear to rotate within the axle or final drive housing. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

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  • Tapered roller bearing elements that support and allow the pinion gear to rotate within the axle or final drive housing
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies

Race IncludedYes
Inside Diameter1.62 in / 41.26 mm
Weight2.2lb
Outside Diameter3.4 in / 86.35 mm
Thickness1.25 in / 31.72 mm
ClassificationOE
Width3.8 in / 30.16 mm
Race Inside Diameter3.42 in / 86.85 mm
Bearing TypeTapered Roller

24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

Good Maintenance Practices:

  • Use recommended grease or differential fluid to keep the bearing properly lubricated
  • Change differential fluids at vehicle recommended maintenance intervals

Signs of wear for differential pinion bearings include but are not limited to:

  • Low fluid levels in differentials
  • Leaks at seals and bearing location
  • Clunking and grinding noise from differential

ModelBody StyleTrimYear(s)
Avalanche2009, 2010, 2011, 2012, 2013
Colorado2009, 2010, 2011, 2012
Express 15002009, 2010, 2011, 2012, 2013, 2014
Silverado 1500Crew Cab Pickup2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
Silverado 1500Standard Cab Pickup2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021

Frequently Asked Questions

Yes. Ring and pinion gears come in matched sets and should be replaced at the same time.

No. Do not use bearing grease on carrier or pinion bearings during installation, this may cause premature bearing failure. Use clean gear oil as a pre-lubricant to the bearings during installation.