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The Yukon 3.42 ring-and-pinion set for GM 8.5-inch Olds rear applications is a high-performance replacement built to OEM fitment standards. Yukon uses precision tooth finishes and advanced heat treatment to reduce friction and heat, producing reliable operation for classic GM rear axles. This ratio is suitable for 8.5-inch Olds setups and is supplied to help restore traction and drivability in older or upgraded drivetrains.
Yukon Gear High Performance Yukon Ring & Pinion Gear Set for GM 8.5in Olds Rear 3.42 Ratio
