GM: 12.0" 14 Bolt - Rear Axle

Axle Shafts

Axle: Axle Shafts

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AAM#Vehicle MakeModelYearAxle TypeSide L/R# of TeethLengthNotes
40165706GMSilverado/Sierra 2500/35002019+12.0" 14 Bolt - Rear AxleL/R31945.5T1XX 12.0" REAR AXLE SHAFT SW 945.5 mm / 31 teeth
40175943GMSilverado/Sierra 2500/35002019+12.0" 14 Bolt - Rear AxleL/R331023.4T1XX 12.0" REAR DW AXLE SHAFT 1023.4 mm / 33 teeth
40175995GMSilverado/Sierra 2500/35002019+12.0" 14 Bolt - Rear AxleL/R33943.8T1XX 12.0" REAR DW AXLE SHAFT 943.8 mm / 33 teeth
Pinion Flange Seal Assembly

Axle: Pinion Flange Seal Assembly

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AAM#Vehicle MakeModelYearAxle TypeSide L/R# of TeethLengthNotes
40189030GMSilverado / Sierra2019+12.0" 14 Bolt - Rear Axle
Pinion Flanges

Axle: Pinion Flanges

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AAM#Vehicle MakeModelYearSeriesAxle Type# of TeethNotes
40208236GMSilverado / Sierra 2500/35002019+Flange12.0" 14 Bolt - Rear Axle32FLANGE ASSEMBLY T1XX 11.5"/12.0" 3.42 (w/DAMPER) REAR AXLE
Ring & Pinion Gear Sets

Axle: Ring & Pinion Gear Sets

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AAM#Vehicle MakeModelYearAxle TypeAxle RatioNotes
120T1342GEARKITGMSilverado, Sierra 2500/35002019+12.0" 14 Bolt - Rear Axle3.42T1XX 12.0" REAR GEARSET 3.42
Master Bearing Kits

Installation Parts and Kits: Master Bearing Kits

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AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
74067028GMSilverado / Sierra 2500/35002019+12.0" 14 Bolt - Rear AxleMASTER BEARING KIT T1 12.0" HD Rear 2019+
Wheel End Kits

Installation Parts and Kits: Wheel End Kits

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AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
74070009GMSilverado / Sierra 2500/35002019+12.0" 14 Bolt - Rear AxleEND WHEEL KIT T1XX 12.0" Rear 2019+ SRW
74070010GMSilverado / Sierra 2500/35002019+12.0" 14 Bolt - Rear AxleEND WHEEL KIT T1XX 12.0" Rear 2019+ DRW