GM: 9.25" Clamshell - Front Axle

Differential Cases - Internal Gears

Axle: Differential Cases - Internal Gears

AAM#Vehicle MakeModelYearAxle TypeAxle Ratio# of TeethNotes
40035046GMSierra, Silverado, H22007 - 20149.25" Clamshell - Front Axle3.42+33 / 1.41"Has relocated snap ring grooves and no spacer - Will not service 2006 and earlier GM 9.25" IFS Axles
40035046GMSierra, Silverado, H22007 - 20149.25" Clamshell - Front Axle3.42+33 / 1.41"Has relocated snap ring grooves and no spacer - Will not service 2006 and earlier GM 9.25" IFS Axles
Differential Cases - No Internal Gears

Axle: Differential Cases - No Internal Gears

AAM#Vehicle MakeModelYearAxle TypeAxle Ratio# of TeethNotes
14012695GMSierra, Silverado1986 - 20139.25" Clamshell - Front Axle3.42+33 / 1.41"USE 74047037 diff gear kit for 2006 and earlier GM 9.25" IFS applications. USE 74040363 dif gear kit for 2007 - 2013 GM 9.25" IFS CLAMSHELL Applications
14012695GMSierra, Silverado1986 - 20139.25" Clamshell - Front Axle3.42+33 / 1.41"USE 74047037 diff gear kit for 2006 and earlier GM 9.25" IFS applications. USE 74040363 dif gear kit for 2007 - 2013 GM 9.25" IFS CLAMSHELL Applications
Output Shafts

Axle: Output Shafts

AAM#Vehicle MakeModelYearAxle TypeSide L/R# of TeethLengthNotes
40029252GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1988 - 20139.25" Clamshell - Front AxleI/O Shaft331574WD
40029252GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1988 - 20139.25" Clamshell - Front AxleI/O Shaft331574WD
40039201GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1997 - 20139.25" Clamshell - Front AxleR333574WD
40039201GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1997 - 20139.25" Clamshell - Front AxleR333574WD
40057071GMSilverado, Sierra, Hummer H22008 - 20139.25" Clamshell - Front AxleL331484WD & AWD - Can service 2007 & earlier applications when used with diff gear kit 74040363
40057073GMHummer H22007 - 20099.25" Clamshell - Front AxleR33517AWD - Can service 2006 & earlier applications when used with diff gear kit 74040363 & 40057071 left hand shaft
40057071GMSilverado, Sierra, Hummer H22008 - 20139.25" Clamshell - Front AxleL331484WD & AWD - Can service 2007 & earlier applications when used with diff gear kit 74040363
40057073GMHummer H22007 - 20099.25" Clamshell - Front AxleR33517AWD - Can service 2006 & earlier applications when used with diff gear kit 74040363 & 40057071 left hand shaft
Pinion Flanges

Axle: Pinion Flanges

AAM#Vehicle MakeModelYearSeriesAxle Type# of TeethNotes
40025925GMSilverado, Sierra, Tahoe, Suburban, Avalanche, Escalade1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 19981344 Yoke9.25" Clamshell - Front Axle30 / 33.39
40025925GMSilverado, Sierra, Tahoe, Suburban, Avalanche, Escalade1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 19981344 Yoke9.25" Clamshell - Front Axle30 / 33.39
Ring & Pinion Gear Sets

Axle: Ring & Pinion Gear Sets

AAM#Vehicle MakeModelYearAxle TypeAxle RatioNotes
40072307GM2500, 3500, Silverado, Suburban, Sierra, Yukon1988 - 20109.25" Clamshell - Front Axle4.10 / 10x41
40072307GM2500, 3500, Silverado, Suburban, Sierra, Yukon1988 - 20109.25" Clamshell - Front Axle4.10 / 10x41
40136007GM2500, 3500, Silverado, Suburban, Sierra, Yukon1988 - 20109.25" Clamshell - Front Axle5.13 / 8x41
40140594GM2500, 3500, Silverado, Suburban, Sierra, Yukon1988 - 20109.25" Clamshell - Front Axle3.42 / 12x41
40136007GM2500, 3500, Silverado, Suburban, Sierra, Yukon1988 - 20109.25" Clamshell - Front Axle5.13 / 8x41
40140594GM2500, 3500, Silverado, Suburban, Sierra, Yukon1988 - 20109.25" Clamshell - Front Axle3.42 / 12x41
Adjusters and Retainers

Installation Parts and Kits: Adjusters and Retainers

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
15521875Diff Case Adjuster RetainerGM1988 - 20109.25" Clamshell - Front AxleLOCK TAB
26008812Diff Case Adjuster RetainerGM1988 - 20109.25" Clamshell - Front AxleT-CLIP
26031703IFS Axle Output Shaft Snap RingGM1988 - 20109.25" Clamshell - Front AxleRH LONG SHAFT IN TUBE
15521875Diff Case Adjuster RetainerGM1988 - 20109.25" Clamshell - Front AxleLOCK TAB
26045211Differential Case AdjusterGM1988 - 20109.25" Clamshell - Front AxleRH INTERNAL ADJUSTER
26008812Diff Case Adjuster RetainerGM1988 - 20109.25" Clamshell - Front AxleT-CLIP
26031703IFS Axle Output Shaft Snap RingGM1988 - 20109.25" Clamshell - Front AxleRH LONG SHAFT IN TUBE
26045211Differential Case AdjusterGM1988 - 20109.25" Clamshell - Front AxleRH INTERNAL ADJUSTER
40040610IFS Axle Output Shaft Snap RingGM1988 - 20109.25" Clamshell - Front AxleLH SHORT SHAFT / LH & RH AWD SHAFTS (replaces 15521878)
40040610IFS Axle Output Shaft Snap RingGM1988 - 20109.25" Clamshell - Front AxleLH SHORT SHAFT / LH & RH AWD SHAFTS (replaces 15521878)
Collapsible Spacers

Installation Parts and Kits: Collapsible Spacers

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
14012691Collapsible SpacerGMAll1988 - 20109.25" Clamshell - Front Axle
14012691Collapsible SpacerGMAll1988 - 20109.25" Clamshell - Front Axle
Differential Gear Kits

Installation Parts and Kits: Differential Gear Kits

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
74040363GMSierra, Silverado, Suburban, Yukon, Savana, Express, Avalanche,2007 - 20109.25" Clamshell - Front Axle
74040363GMSierra, Silverado, Suburban, Yukon, Savana, Express, Avalanche,2007 - 20109.25" Clamshell - Front Axle
74047037GMSierra, Silverado, Suburban, Yukon XL, Avalanche, H21981 - 20069.25" Clamshell - Front Axle
74047037GMSierra, Silverado, Suburban, Yukon XL, Avalanche, H21981 - 20069.25" Clamshell - Front Axle
Disconnect Shifter Kits

Installation Parts and Kits: Disconnect Shifter Kits

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
74080008GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2001 - 20129.25" Clamshell - Front Axle
74080008GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2001 - 20129.25" Clamshell - Front Axle
Master Bearing Kits

Installation Parts and Kits: Master Bearing Kits

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
74067005GMSierra, Silverado, Suburban, Yukon XL, Avalanche,1988 - 20119.25" Clamshell - Front Axle
74067005GMSierra, Silverado, Suburban, Yukon XL, Avalanche,1988 - 20119.25" Clamshell - Front Axle
Master Install Kits

Installation Parts and Kits: Master Install Kits

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
74010011GMSierra, Silverado, Suburban, Yukon, Avalanche( H2 vent connector1999 - 20169.25" Clamshell - Front Axle40027570 vent connector deleted for H2 applications currently not available
74010011GMSierra, Silverado, Suburban, Yukon, Avalanche( H2 vent connector1999 - 20169.25" Clamshell - Front Axle40027570 vent connector deleted for H2 applications currently not available
Needle Bearings

Installation Parts and Kits: Needle Bearings

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
15521873IFS Output Needle BearingGMAll1988 - 20109.25" Clamshell - Front Axle41x51x16
15530296IFS Output Needle BearingGMAll1988 - 20109.25" Clamshell - Front Axle38x48x16
15521873IFS Output Needle BearingGMAll1988 - 20109.25" Clamshell - Front Axle41x51x16
15530296IFS Output Needle BearingGMAll1988 - 20109.25" Clamshell - Front Axle38x48x16
26041516IFS Output Needle BearingGMAll1988 - 20109.25" Clamshell - Front Axle11x17x13
26041516IFS Output Needle BearingGMAll1988 - 20109.25" Clamshell - Front Axle11x17x13
Nuts, Washers, and Bolts

Installation Parts and Kits: Nuts, Washers, and Bolts

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
11503877IFS Tube & Carrier BoltGM1988 - 20109.25" Clamshell - Front AxleM6 x 1.0 x 14 - 6 PT HEX (IFS ADJUSTER)
11503963IFS Tube & Carrier BoltGM1988 - 20109.25" Clamshell - Front Axle12mm OD x 6mm ID x 2mm WIDTH LOCK WASHER
11503877IFS Tube & Carrier BoltGM1988 - 20109.25" Clamshell - Front AxleM6 x 1.0 x 14 - 6 PT HEX (IFS ADJUSTER)
11503963IFS Tube & Carrier BoltGM1988 - 20109.25" Clamshell - Front Axle12mm OD x 6mm ID x 2mm WIDTH LOCK WASHER
Output Shaft Seal Kits

Installation Parts and Kits: Output Shaft Seal Kits

AAM#Part TypeVehicle MakeModelYearAxle SizeNotes
74050005GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1997 - 20109.25" Clamshell - Front AxleOnly available by special order with a minimum buy of 20 per order
74050005GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1997 - 20109.25" Clamshell - Front AxleOnly available by special order with a minimum buy of 20 per order
Pinion Seal Kits

Installation Parts and Kits: Pinion Seal Kits

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
74020008GMSierra, Silverado, Suburban, Yukon, Avalanche, H21999 - 20129.25" Clamshell - Front Axle
74020008GMSierra, Silverado, Suburban, Yukon, Avalanche, H21999 - 20129.25" Clamshell - Front Axle
Seals and Gaskets

Installation Parts and Kits: Seals and Gaskets

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
40007712Pinion SealGM1988 - 20149.25" Clamshell - Front Axle
40007712Pinion SealGM1988 - 20149.25" Clamshell - Front Axle
40051283Output SealGM1988 - 20109.25" Clamshell - Front Axle
40051283Output SealGM1988 - 20109.25" Clamshell - Front Axle
Vents, Drain and Fill Plugs

Installation Parts and Kits: Vents, Drain and Fill Plugs

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
00476753Fill PlugGM1988 - 20109.25" Clamshell - Front AxleM20x1.50x21.5
14042602Fill Plug WasherGM1988 - 20109.25" Clamshell - Front Axle
15588383Drain Plug WasherGM1988 - 20109.25" Clamshell - Front Axle
14042602Fill Plug WasherGM1988 - 20109.25" Clamshell - Front Axle
15588383Drain Plug WasherGM1988 - 20109.25" Clamshell - Front Axle
26058815Drain PlugGM1988 - 20109.25" Clamshell - Front AxleM12x1.50x35 w/ Magnet
26058815Drain PlugGM1988 - 20109.25" Clamshell - Front AxleM12x1.50x35 w/ Magnet
40026655Axle VentGM1988 - 20109.25" Clamshell - Front AxleM75x1.50 THREADED PLASTIC W/ 9MM BARB
40026655Axle VentGM1988 - 20109.25" Clamshell - Front AxleM75x1.50 THREADED PLASTIC W/ 9MM BARB