Differential Spider Gear Kit, 1963-1979 Corvette, GM Cast-Iron Differential, 17-Spline, Yukon Dura Grip Positraction, 4-Pinion, Kit

Yukon Gear YPKGMVET-P-17 is a replacement spider gear and positraction internal kit for 1963-1979 Chevrolet Corvette applications using the GM cast-iron differential with 17-spline axles and a compatible Yukon Dura Grip positraction. The kit provides the primary internal gear components needed to replace worn or damaged spider gears while retaining the existing differential carrier.

The kit includes two 17-spline side gears, four pinion gears, a cross-pin shaft, roll pin, and spider gear thrust washers. It is 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.

YPKGMVET-P-17 does not include differential clutches. Its application is focused on C2 and C3 Corvette rear differential service, making it useful for restorations, performance rebuilds, and repairs involving the correct 17-spline GM cast-iron Corvette differential configuration.

Key Features & Specs:

• Product Type: Differential spider gear kit

• Application: 1963-1979 Chevrolet Corvette

• Differential: GM cast-iron Corvette differential

• Axle Spline Count: 17-spline

• Differential Type: Yukon Dura Grip positraction

• Side Gears: 2

• Pinion / Spider Gears: 4

• 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: YPKGMVET-P-17

• UPC: 883584160618

• Proxy Number: 16061

Fitment:

• 1963-1974 Chevrolet Corvette

• 1975-1976 Chevrolet Corvette Stingray

• 1977-1979 Chevrolet Corvette

• 1978 Chevrolet Corvette Indianapolis 500 Pace Car

• 1978 Chevrolet Corvette Silver Anniversary Edition

• GM cast-iron Corvette differential

• 17-spline axle applications

• Compatible Yukon Dura Grip positraction

About Yukon Gear Corvette Spider Gear Kits:

Yukon Gear & Axle spider gear kits are designed to replace worn or damaged internal differential gears while allowing the existing compatible carrier to remain in service. For classic Corvette applications, these kits provide the application-specific side gears, pinion gears, cross-pin components, and thrust washers needed during differential repair or restoration. They are especially useful when rebuilding the original-style GM cast-iron rear differential and the carrier itself remains usable.