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GM: 8.25" IFS - Front Axle

Differential Cases - Internal Gears

Axle: Differential Cases - Internal Gears

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AAM#	Vehicle Make	Model	Year	Axle Type	Axle Ratio	# of Teeth	Notes
26067130	GM	Sierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade	1988 - 2011	8.25" IFS - Front Axle	3.42+	28 / 1.20"	4WD applications only - will not work with AWD

Differential Cases - No Internal Gears

Axle: Differential Cases - No Internal Gears

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AAM#	Vehicle Make	Model	Year	Axle Type	Axle Ratio	# of Teeth	Notes
26018131	GM	Sierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade	1988 - 2014	8.25" IFS - Front Axle	3.42+	28 / 1.20"	Use 74045936 diff gear kit

Axle: Output Shafts

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AAM#	Vehicle Make	Model	Year	Axle Type	Side L/R	# of Teeth	Length	Notes
26058813	GM	Sierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade	1988 - 2011	8.25" IFS - Front Axle	L	28	128.5	4WD & AWD
40029249	GM	Sierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade	1988 - 2014	8.25" IFS - Front Axle	I/O Shaft	28	126	4WD
40037801	GM	1500 Series, Silverado, Sierra, Blazer, Jimmy, Yukon, Tahoe, Sub	2001 - 2006	8.25" IFS - Front Axle	R	28	498.6	AWD
40038845	GM	Sierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade	2007 - 2011	8.25" IFS - Front Axle	R	28	360	4WD, Used with 1 pc. disconnect gear and sleeve
40038846	GM	Sierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade	2007 - 2011	8.25" IFS - Front Axle	R	28	491	AWD
40104063	GM	Sierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade	2012 - 2014	8.25" IFS - Front Axle	R	28	360	4WD, Painted, with seal deflector
40104064	GM	Sierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade	2012 - 2014	8.25" IFS - Front Axle	L	28	128.5	AWD & 4WD, Painted, Has seal deflector

Ring & Pinion Gear Sets

Axle: Ring & Pinion Gear Sets

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AAM#	Vehicle Make	Model	Year	Axle Type	Axle Ratio	Notes
40093539	GM	1500 Series, Silverado, Sierra, Blazer, Jimmy, Yukon, Tahoe, Sub	1988 - 2018	8.25" IFS - Front Axle	3.08 / 13x40	Will not fit 3.42+ diff case. Must use 40038013 case assembly
40093540	GM	1500 Series, Silverado, Sierra, Blazer, Jimmy, Yukon, Tahoe, Sub	1988 - 2018	8.25" IFS - Front Axle	3.73 / 11x41
40093541	GM	1500 Series, Silverado, Sierra, Blazer, Jimmy, Yukon, Tahoe, Sub	1988 - 2018	8.25" IFS - Front Axle	3.42 / 12x41
40095196	GM	1500 Series, Silverado, Sierra, Blazer, Jimmy, Yukon, Tahoe, Sub	1988 - 2018	8.25" IFS - Front Axle	4.10 / 10x41
40125343	GM	Silverado, Sierra, Light Duty Pick-up (15 Series)	2014 - 2018	8.25" IFS - Front Axle	3.23 13/42

Adjusters and Retainers

Installation Parts and Kits: Adjusters and Retainers

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AAM#	Part Type	Vehicle Make	Model	Year	Axle Type	Notes
15588312	Diff Case Adjuster Retainer	GM			8.25" IFS - Front Axle	T-CLIP
40023211	IFS Axle Output Shaft Snap Ring	GM			8.25" IFS - Front Axle	RETAINS RH LONG SHAFT IN TUBE (W/O CONECTOR GEAR) (LATE DESIGN - 1PC SLEEVE)
40032884	Differential Case Adjuster	GM			8.25" IFS - Front Axle	LH & RH (USED W/ LOCK RING)
40133900	Diff Case Adjuster Retainer	GM			8.25" IFS - Front Axle	LOCK RING

Collapsible Spacers

Installation Parts and Kits: Collapsible Spacers

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AAM#	Part Type	Vehicle Make	Model	Year	Axle Type	Notes
40010355	Collapsible Spacer	GM	All	All	8.25" IFS - Front Axle

Differential Gear Kits

Installation Parts and Kits: Differential Gear Kits

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AAM#	Part Type	Vehicle Make	Model	Year	Axle Type	Notes
74045936		GM	Silverado, Sierra, Yukon, Denali, Suburban, Escalade, Avalanche	1988 - 2012	8.25" IFS - Front Axle

Disconnect Shifter Kits

Installation Parts and Kits: Disconnect Shifter Kits

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AAM#	Part Type	Vehicle Make	Model	Year	Axle Type	Notes
74080006		GM	Sierra, Silverado, Suburban, Yukon, Avalanche	1998 - 2006,	8.25" IFS - Front Axle
74080007		GM	Sierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade	2007 - 2013	8.25" IFS - Front Axle

Electric Shift Actuators

Installation Parts and Kits: Electric Shift Actuators

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AAM#	Part Type	Vehicle Make	Model	Year	Axle Type	Notes
40007173	Electric Shift Actuator	GM		1997 - 2016	8.25" IFS - Front Axle	(5 PIN 1988+)
40097241	Electric Shift Actuator	GM		2014 - 2016	8.25" IFS - Front Axle

Master Install Kits

Installation Parts and Kits: Master Install Kits

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AAM#	Part Type	Vehicle Make	Model	Year	Axle Type	Notes
74010006		GM	Sierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade	1999 - 2017	8.25" IFS - Front Axle

Needle Bearings

Installation Parts and Kits: Needle Bearings

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AAM#	Part Type	Vehicle Make	Model	Year	Axle Type	Notes
26041515	IFS Output Needle Bearing	GM	All	All	8.25" IFS - Front Axle	32x38x16
26041516	IFS Output Needle Bearing	GM	All	All	8.25" IFS - Front Axle	11x17x13
26066885	IFS Output Needle Bearing	GM	All	All	8.25" IFS - Front Axle	32x41x13 (8.25 tube)

Nuts, Washers, and Bolts

Installation Parts and Kits: Nuts, Washers, and Bolts

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AAM#	Part Type	Vehicle Make	Model	Year	Axle Type	Notes
00517900	Pinion Washer	GM			8.25" IFS - Front Axle	41mm OD X 23mm ID X 5mm WIDTH
14045736	IFS Tube & Carrier Bolt	GM			8.25" IFS - Front Axle	M10 x 1.5 x 54 - 6 PT HEX W/ WSHR
26036835	IFS Tube & Carrier Bolt	GM			8.25" IFS - Front Axle	M10 x 1.5 x 34 - 6 PT HEX W/ WSHR & ADHESIVE
40061033	Ring Gear Bolt	GM			8.25" IFS - Front Axle	7/16" x 20 x .88" - LH 6 PT SERRATED HEX W/ ADHESIVE
9783762	Pinion Nut	GM			8.25" IFS - Front Axle	7/8" X 14 - 6 POINT HEX - TQ PREV

Output Shaft Seal Kits

Installation Parts and Kits: Output Shaft Seal Kits

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AAM#	Part Type	Vehicle Make	Model	Year	Axle Size	Notes
74050004		GM	Sierra, Yukon, Silverado, Avalanche, Tahoe, Suburban, Escalade	1997 - 2016	8.25" IFS - Front Axle	Only available by special order with a minimum buy of 20 per order

Seals and Gaskets

Installation Parts and Kits: Seals and Gaskets

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AAM#	Part Type	Vehicle Make	Model	Year	Axle Type	Notes
40035410	Coverpan Gasket	GM			8.25" IFS - Front Axle
40035411	Tube Gasket	GM			8.25" IFS - Front Axle
40038875	Output Seal	GM			8.25" IFS - Front Axle
40089228	Output Seal	GM		2014 - 2016	8.25" IFS - Front Axle

Vents, Drain and Fill Plugs

Installation Parts and Kits: Vents, Drain and Fill Plugs

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AAM#	Part Type	Vehicle Make	Model	Year	Axle Type	Notes
00476753	Fill Plug	GM			8.25" IFS - Front Axle	M20x1.50x21.5
14042602	Fill Plug Washer	GM			8.25" IFS - Front Axle
15588374	Drain Plug	GM			8.25" IFS - Front Axle	M12x1.50x20
15588383	Drain Plug Washer	GM			8.25" IFS - Front Axle
26058815	Drain Plug	GM			8.25" IFS - Front Axle	M12x1.50x35 w/ Magnet (Tapered)
40026655	Axle Vent	GM			8.25" IFS - Front Axle	M75x1.50 THREADED PLASTIC W/ 9MM BARB
40039752	Drain/Fill Plug	GM			8.25" IFS - Front Axle	M20x1.5x16 w/ Magnet
46002040	Axle Vent	GM			8.25" IFS - Front Axle	M10x1.50 THREADED steel
46002081	Fill Plug Washer	GM			8.25" IFS - Front Axle