Yukon Gear & Axle

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Product Specification:

SKU:YUKZIKGM9.5-S-33

MPN: ZIKGM9.5-S-33

UPC: 883584390299

Weight: 7.9 lb

Inventory: 4

Type: Differential Spider Gears

Description

Vehicle Fitment

• 1979-1997 GM 9.5" 14-bolt rear axle, 33-spline, open (standard) differential
• 1997-2013 GM 9.5" 14-bolt rear axle, 33-spline, open (standard) differential
• 1988-2006 GM 9.25" IFS front differential, 33-spline, open (standard) differential
• 2003-2006 Dodge Ram 9.25" AAM front differential, 33-spline (shares the same open differential design as the GM 9.25" IFS)

Fitment Notes

• Standard (open) differential spider gear set only - not compatible with limited-slip/posi carriers such as Dura Grip, Eaton, or factory G80, which use different internal components
• 33-spline axles only; GM 9.5"/9.25" differentials were also offered with other spline counts in some applications, so confirm your axle spline count before ordering
• Covers both the 1979-1997 and 1997-2013 generations of the GM 9.5" 14-bolt rear axle, plus the pre-2006 GM 9.25" IFS front and its Dodge Ram AAM counterpart

Features

• Complete standard (open) spider gear set for 33-spline GM 9.5" and 9.25" IFS differentials
• Direct-fit replacement for a worn, clunking, or noisy open differential
• Addresses common spider gear wear symptoms, including clunking on turns and whirring noise
• Includes matched side gears, pinion gears, and cross pin hardware for a complete rebuild
• Manufactured by USA Standard Gear
• Restores proper differential action and reduces further wear to the cross pin shaft and case

Specifications

• Differential: GM 9.5" 14-bolt rear / GM 9.25" IFS front / Dodge Ram 9.25" AAM front (shared design)
• Axle spline count: 33
• Differential type: Open (standard) - not for limited-slip carriers

Included Components

• 2x Side gears
• 2x Pinion gears
• 1x Cross pin shaft
• 1x Cross pin bolt
• 1x Spider gear thrust washer set

Product Description

The Yukon ZIKGM9.5-S-33 is a complete standard (open) spider gear set for 33-spline GM 9.5" rear and 9.25" IFS front differentials, also fitting the shared-design 9.25" AAM front used in early 2000s Dodge Ram trucks. Spider gears are the internal components that allow each rear wheel to turn at a different speed while cornering - over time or under heavy load, they can wear, chip, or crack, producing the classic clunking noise on turns or a whirring sound that gets worse with speed.

This kit replaces the full open-differential gear set: side gears, pinion gears, and the cross pin hardware that holds them together, giving you everything needed to address wear without replacing the entire carrier. Because it's built specifically for open (non-limited-slip) 33-spline differentials, it's important to confirm your differential type and spline count before ordering - a limited-slip or posi unit uses a different internal gear set entirely, and this kit is not a substitute.

Installation requires removing the differential cover and the carrier itself to access the spider gear assembly, so it's a moderate-difficulty repair well within reach of an experienced DIY mechanic, and a common step during a broader differential rebuild or bearing/seal service.