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Yukon Gear YPKGM12-P-33 is a replacement spider gear and positraction internal kit for GM 12-bolt passenger car and truck differentials equipped with a Yukon Dura Grip positraction and 33-spline axles. It provides the core internal gear components needed to replace worn or damaged spider gears while retaining the existing differential carrier.
The kit includes two 33-spline side gears, two pinion gears, a cross-pin shaft, roll pin, and spider gear thrust washers. This makes it a practical rebuild solution when the side gears, pinion gears, thrust washers, or related internal components require replacement but the compatible Dura Grip carrier remains serviceable.
YPKGM12-P-33 is intended for GM 12P passenger car and 12T truck Dura Grip applications and does not include clutch components. Its broad coverage spans classic Chevrolet muscle cars, full-size passenger cars, trucks, vans, and GMC platforms using the correct 33-spline GM 12-bolt differential configuration.
Key Features & Specs:
Product Type: Differential spider gear kit
Differential: GM 12-bolt passenger car and truck
Axle Spline Count: 33-spline
Differential Type: Yukon Dura Grip positraction
Side Gears: 2
Pinion / Spider Gears: 2
Cross-Pin Shaft: Included
Roll Pin: Included
Spider Gear Thrust Washers: Included
Clutches: Not included
Service Use: Spider gear replacement and differential rebuilding
Brand: Yukon Gear & Axle
Part Number: YPKGM12-P-33
UPC: 883584160403
Proxy Number: 16040
Fitment:
GM 12-bolt passenger car differential
GM 12-bolt truck differential
33-spline axle applications
Yukon Dura Grip positraction
Select Chevrolet Camaro, Chevelle, Nova, El Camino, Impala, Bel Air, Biscayne, Caprice, and Monte Carlo applications
Select Chevrolet C10, K10, Blazer, Suburban, and G-Series van applications
Select GMC C/K 1500, Suburban, G-Series, and related truck/van applications
Select Pontiac Firebird and GTO applications
Select Buick Wildcat applications
About Yukon Gear Dura Grip Spider Gear Kits:
Yukon Gear & Axle Dura Grip spider gear kits provide replacement internal differential components for compatible Yukon positraction carriers. These kits combine application-specific side gears, pinion gears, cross-pin hardware, and thrust washers needed to service worn or damaged differential internals. They are a practical choice when the carrier remains usable but the spider gear set requires replacement during a differential rebuild.
