GM: 8.25" IFS - Front Axle

Differential Cases - Internal Gears

Axle: Differential Cases - Internal Gears

AAM#Vehicle MakeYearAxle TypeAxle Ratio# of TeethNotes
26067130GM1988 - 20118.25" IFS - Front Axle3.42+28 / 1.20"4WD applications only - will not work with AWD View
26067130GM1988 - 20118.25" IFS - Front Axle3.42+28 / 1.20"4WD applications only - will not work with AWD View
40038013GM1988 - 20148.25" IFS - Front Axle3.08 - 3.2328 / 1.20"4WD Applications only will not work with AWD - Will not accept 3.42+ ratios
40038013GM1988 - 20148.25" IFS - Front Axle3.08 - 3.2328 / 1.20"4WD Applications only will not work with AWD - Will not accept 3.42+ ratios
Differential Cases - No Internal Gears

Axle: Differential Cases - No Internal Gears

AAM#Vehicle MakeYearAxle TypeAxle Ratio# of TeethNotes
26018131GM1988 - 20148.25" IFS - Front Axle3.42+28 / 1.20"Use 74045936 diff gear kit
26018131GM1988 - 20148.25" IFS - Front Axle3.42+28 / 1.20"Use 74045936 diff gear kit
Output Shafts

Axle: Output Shafts

AAM#Vehicle MakeModelYearAxle TypeSide L/R# of TeethLengthNotes
22780163GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2012 - 20168.25" IFS - Front AxleR28491AWD, with seal deflector
22780163GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2012 - 20168.25" IFS - Front AxleR28491AWD, with seal deflector
26058813GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1988 - 20118.25" IFS - Front AxleL28128.54WD & AWD
26058813GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1988 - 20118.25" IFS - Front AxleL28128.54WD & AWD
26058832GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1988 - 20038.25" IFS - Front AxleR28370.54WD, Used with 2 pc. disconnect gear and sleeve
26058832GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1988 - 20038.25" IFS - Front AxleR28370.54WD, Used with 2 pc. disconnect gear and sleeve
40029249GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1988 - 20148.25" IFS - Front AxleI/O Shaft281264WD
40029249GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1988 - 20148.25" IFS - Front AxleI/O Shaft281264WD
40037800GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2004 - 20068.25" IFS - Front AxleR283724WD, Used with 1 pc. disconnect gear and sleeve
40037800GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2004 - 20068.25" IFS - Front AxleR283724WD, Used with 1 pc. disconnect gear and sleeve
40037801GM1500 Series, Silverado, Sierra, Blazer, Jimmy, Yukon, Tahoe, Suburban, Escalade, Avalanche2001 - 20068.25" IFS - Front AxleR28498.6AWD
40037801GM1500 Series, Silverado, Sierra, Blazer, Jimmy, Yukon, Tahoe, Suburban, Escalade, Avalanche2001 - 20068.25" IFS - Front AxleR28498.6AWD
40038845GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2007 - 20118.25" IFS - Front AxleR283604WD, Used with 1 pc. disconnect gear and sleeve
40038845GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2007 - 20118.25" IFS - Front AxleR283604WD, Used with 1 pc. disconnect gear and sleeve
40038846GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2007 - 20118.25" IFS - Front AxleR28491AWD
40038846GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2007 - 20118.25" IFS - Front AxleR28491AWD
40104063GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2012 - 20148.25" IFS - Front AxleR283604WD, Painted, with seal deflector
40104063GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2012 - 20148.25" IFS - Front AxleR283604WD, Painted, with seal deflector
40104064GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2012 - 20148.25" IFS - Front AxleL28128.5AWD & 4WD, Painted, Has seal deflector
40104064GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2012 - 20148.25" IFS - Front AxleL28128.5AWD & 4WD, Painted, Has seal deflector
Pinion Flanges

Axle: Pinion Flanges

AAM#Vehicle MakeSeriesAxle Type# of TeethNotes
40025925GM1344 Yoke8.25" IFS - Front Axle30 / 33.39
40025925GM1344 Yoke8.25" IFS - Front Axle30 / 33.39
Ring & Pinion Gear Sets

Axle: Ring & Pinion Gear Sets

AAM#Vehicle MakeModelYearAxle TypeAxle RatioNotes
40093539GM1500 Series, Silverado, Sierra, Blazer, Jimmy, Yukon, Tahoe, Suburban, Escalade, Avalanche1988 - 20188.25" IFS - Front Axle3.08 / 13x40Will not fit 3.42+ diff case. Must use 40038013 case assembly
40093539GM1500 Series, Silverado, Sierra, Blazer, Jimmy, Yukon, Tahoe, Suburban, Escalade, Avalanche1988 - 20188.25" IFS - Front Axle3.08 / 13x40Will not fit 3.42+ diff case. Must use 40038013 case assembly
40093540GM1500 Series, Silverado, Sierra, Blazer, Jimmy, Yukon, Tahoe, Suburban, Escalade, Avalanche1988 - 20188.25" IFS - Front Axle3.73 / 11x41
40093540GM1500 Series, Silverado, Sierra, Blazer, Jimmy, Yukon, Tahoe, Suburban, Escalade, Avalanche1988 - 20188.25" IFS - Front Axle3.73 / 11x41
40093541GM1500 Series, Silverado, Sierra, Blazer, Jimmy, Yukon, Tahoe, Suburban, Escalade, Avalanche1988 - 20188.25" IFS - Front Axle3.42 / 12x41
40093541GM1500 Series, Silverado, Sierra, Blazer, Jimmy, Yukon, Tahoe, Suburban, Escalade, Avalanche1988 - 20188.25" IFS - Front Axle3.42 / 12x41
40095196GM1500 Series, Silverado, Sierra, Blazer, Jimmy, Yukon, Tahoe, Suburban, Escalade, Avalanche1988 - 20188.25" IFS - Front Axle4.10 / 10x41
40095196GM1500 Series, Silverado, Sierra, Blazer, Jimmy, Yukon, Tahoe, Suburban, Escalade, Avalanche1988 - 20188.25" IFS - Front Axle4.10 / 10x41
40125343GMSilverado, Sierra, Light Duty Pick-up (15 Series)2014 - 20188.25" IFS - Front Axle3.23 13/42
40125343GMSilverado, Sierra, Light Duty Pick-up (15 Series)2014 - 20188.25" IFS - Front Axle3.23 13/42
Adjusters and Retainers

Installation Parts and Kits: Adjusters and Retainers

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
15588312Diff Case Adjuster RetainerGM8.25" IFS - Front AxleT-CLIP
15588312Diff Case Adjuster RetainerGM8.25" IFS - Front AxleT-CLIP
40023211IFS Axle Output Shaft Snap RingGM8.25" IFS - Front AxleRETAINS RH LONG SHAFT IN TUBE (W/O CONECTOR GEAR) (LATE DESIGN - 1PC SLEEVE)
40023211IFS Axle Output Shaft Snap RingGM8.25" IFS - Front AxleRETAINS RH LONG SHAFT IN TUBE (W/O CONECTOR GEAR) (LATE DESIGN - 1PC SLEEVE)
40032884Differential Case AdjusterGM8.25" IFS - Front AxleLH & RH (USED W/ LOCK RING)
40032884Differential Case AdjusterGM8.25" IFS - Front AxleLH & RH (USED W/ LOCK RING)
40133900Diff Case Adjuster RetainerGM8.25" IFS - Front AxleLOCK RING
40133900Diff Case Adjuster RetainerGM8.25" IFS - Front AxleLOCK RING
Collapsible Spacers

Installation Parts and Kits: Collapsible Spacers

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
40010355Collapsible SpacerGMAllAll8.25" IFS - Front Axle
40010355Collapsible SpacerGMAllAll8.25" IFS - Front Axle
Differential Gear Kits

Installation Parts and Kits: Differential Gear Kits

AAM#Vehicle MakeModelYearAxle Type
74045936GMSilverado, Sierra, Yukon, Denali, Suburban, Escalade, Avalanche 15001988 - 20128.25" IFS - Front Axle View
74045936GMSilverado, Sierra, Yukon, Denali, Suburban, Escalade, Avalanche 15001988 - 20128.25" IFS - Front Axle View
Disconnect Shifter Kits

Installation Parts and Kits: Disconnect Shifter Kits

AAM#Vehicle MakeModelYearAxle Type
74080006GMSierra, Silverado, Suburban, Yukon, Avalanche1998 - 2006,8.25" IFS - Front Axle View
74080006GMSierra, Silverado, Suburban, Yukon, Avalanche1998 - 2006,8.25" IFS - Front Axle View
74080007GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2007 - 20138.25" IFS - Front Axle View
74080007GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2007 - 20138.25" IFS - Front Axle View
74080010GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2014-20188.25" IFS - Front Axle
74080010GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade2014-20188.25" IFS - Front Axle
Electric Shift Actuators

Installation Parts and Kits: Electric Shift Actuators

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
40007173Electric Shift ActuatorGM1997 - 20168.25" IFS - Front Axle(5 PIN 1988+)
40007173Electric Shift ActuatorGM1997 - 20168.25" IFS - Front Axle(5 PIN 1988+)
40097241Electric Shift ActuatorGM2014 - 20168.25" IFS - Front Axle
40097241Electric Shift ActuatorGM2014 - 20168.25" IFS - Front Axle
Master Bearing Kits

Installation Parts and Kits: Master Bearing Kits

AAM#Vehicle MakeModelYearAxle Type
74067004GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1988 - 20118.25" IFS - Front Axle View
74067004GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1988 - 20118.25" IFS - Front Axle View
Master Install Kits

Installation Parts and Kits: Master Install Kits

AAM#Vehicle MakeModelYearAxle Type
74010006GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1999 - 20178.25" IFS - Front Axle View
74010006GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1999 - 20178.25" IFS - Front Axle View
Needle Bearings

Installation Parts and Kits: Needle Bearings

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
26041515IFS Output Needle BearingGMAllAll8.25" IFS - Front Axle32x38x16
26041515IFS Output Needle BearingGMAllAll8.25" IFS - Front Axle32x38x16
26041516IFS Output Needle BearingGMAllAll8.25" IFS - Front Axle11x17x13
26041516IFS Output Needle BearingGMAllAll8.25" IFS - Front Axle11x17x13
26066885IFS Output Needle BearingGMAllAll8.25" IFS - Front Axle32x41x13 (8.25 tube)
26066885IFS Output Needle BearingGMAllAll8.25" IFS - Front Axle32x41x13 (8.25 tube)
Nuts, Washers, and Bolts

Installation Parts and Kits: Nuts, Washers, and Bolts

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
00517900Pinion WasherGM8.25" IFS - Front Axle41mm OD X 23mm ID X 5mm WIDTH
00517900Pinion WasherGM8.25" IFS - Front Axle41mm OD X 23mm ID X 5mm WIDTH
14045736IFS Tube & Carrier BoltGM8.25" IFS - Front AxleM10 x 1.5 x 54 - 6 PT HEX W/ WSHR
14045736IFS Tube & Carrier BoltGM8.25" IFS - Front AxleM10 x 1.5 x 54 - 6 PT HEX W/ WSHR
26036835IFS Tube & Carrier BoltGM8.25" IFS - Front AxleM10 x 1.5 x 34 - 6 PT HEX W/ WSHR & ADHESIVE
26036835IFS Tube & Carrier BoltGM8.25" IFS - Front AxleM10 x 1.5 x 34 - 6 PT HEX W/ WSHR & ADHESIVE
40061033Ring Gear BoltGM8.25" IFS - Front Axle7/16" x 20 x .88" - LH 6 PT SERRATED HEX W/ ADHESIVE
40061033Ring Gear BoltGM8.25" IFS - Front Axle7/16" x 20 x .88" - LH 6 PT SERRATED HEX W/ ADHESIVE
9783762Pinion NutGM8.25" IFS - Front Axle7/8" X 14 - 6 POINT HEX - TQ PREV
9783762Pinion NutGM8.25" IFS - Front Axle7/8" X 14 - 6 POINT HEX - TQ PREV
Output Shaft Seal Kits

Installation Parts and Kits: Output Shaft Seal Kits

AAM#Vehicle MakeModelYearAxle Size
74050004GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1997 - 20168.25" IFS - Front Axle View
74050004GMSierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade1997 - 20168.25" IFS - Front Axle View
Seals and Gaskets

Installation Parts and Kits: Seals and Gaskets

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
40035410Coverpan GasketGM8.25" IFS - Front Axle
40035411Tube GasketGM8.25" IFS - Front Axle
40035410Coverpan GasketGM8.25" IFS - Front Axle
40035411Tube GasketGM8.25" IFS - Front Axle
40038875Output SealGM8.25" IFS - Front Axle
40038875Output SealGM8.25" IFS - Front Axle
40089228Output SealGM2014 - 20168.25" IFS - Front Axle
40089228Output SealGM2014 - 20168.25" IFS - Front Axle
Vents, Drain/Fill Plugs

Installation Parts and Kits: Vents, Drain/Fill Plugs

AAM#Part TypeVehicle MakeModelYearAxle TypeNotes
00476753Fill PlugGM8.25" IFS - Front AxleM20x1.50x21.5
00476753Fill PlugGM8.25" IFS - Front AxleM20x1.50x21.5
14042602Fill Plug WasherGM8.25" IFS - Front Axle
14042602Fill Plug WasherGM8.25" IFS - Front Axle
15588374Drain PlugGM8.25" IFS - Front AxleM12x1.50x20
15588374Drain PlugGM8.25" IFS - Front AxleM12x1.50x20
15588383Drain Plug WasherGM8.25" IFS - Front Axle
15588383Drain Plug WasherGM8.25" IFS - Front Axle
26058815Drain PlugGM8.25" IFS - Front AxleM12x1.50x35 w/ Magnet (Tapered)
26058815Drain PlugGM8.25" IFS - Front AxleM12x1.50x35 w/ Magnet (Tapered)
40026655Axle VentGM8.25" IFS - Front AxleM75x1.50 THREADED PLASTIC W/ 9MM BARB
40026655Axle VentGM8.25" IFS - Front AxleM75x1.50 THREADED PLASTIC W/ 9MM BARB
40039752Drain/Fill PlugGM8.25" IFS - Front AxleM20x1.5x16 w/ Magnet
40039752Drain/Fill PlugGM8.25" IFS - Front AxleM20x1.5x16 w/ Magnet
46002040Axle VentGM8.25" IFS - Front AxleM10x1.50 THREADED steel
46002040Axle VentGM8.25" IFS - Front AxleM10x1.50 THREADED steel
46002080Fill PlugGM8.25" IFS - Front AxleM40x1.50
46002080Fill PlugGM8.25" IFS - Front AxleM40x1.50
46002081Fill Plug WasherGM8.25" IFS - Front Axle
46002081Fill Plug WasherGM8.25" IFS - Front Axle