Yukon Gear Dura Grip Positraction for 1964-1973 Select Buick/Chevrolet/Pontiac; GM 12-Bolt 30-Spline 3.08-3.90

Fits select 1964-1973 Buick, Chevrolet, and Pontiac models with a GM 12-bolt passenger car differential, 30-spline axles, and 3.08 to 3.90 gear ratios (including thick gears).

The Yukon Gear Dura Grip is a high-performance limited-slip differential (LSD) designed to provide smooth, aggressive traction for street and light off-road use. Engineered for durability and serviceability, the Dura Grip features a high-strength nodular iron case to prevent housing distortion under load and forged 4320 chromoly spider gears for maximum tooth strength. The internal composite clutches deliver reliable locking force while maintaining smooth engagement during cornering. This unit is fully rebuildable, ensuring a long service life for your classic GM muscle car or cruiser.

• Manufacturer Part Number: YDGGM12P-3-30-1
• Differential Case: GM 12-Bolt Passenger Car
• Axle Spline Count: 30
• Compatible Gear Ratios: 3.08 - 3.90 (Fits standard and thick gears)
• Material: High-strength nodular iron case with 4320 chromoly internals
• Clutch Type: Raybestos composite clutches for consistent friction
• Design: Fully rebuildable, four-spring clutch style
• Assembled in the USA