Trail-Proven 4WD Stability: Jeep Wrangler TJ NP231 Transfer Case Solutions.
The chain-driven New Process NP231 transfer case is the reliable backbone of the 4WD system in most 1996-2006 Jeep Wrangler TJ trim levels. However, when a TJ is modified with a suspension lift, the factory slip-yoke rear output operates at harsh angles, leading to severe drivetrain vibrations and accelerated wear. Our inventory features the definitive performance upgrades to resolve these geometry issues permanently, alongside every component required for a professional mechanical restoration.
Trusted Trail Quality: RT Off-Road, Crown, and Spicer Excellence.
The ultimate solution for lifted Wranglers is our
RT Off-Road Slip-Yoke Eliminator (SYE) Kit, available individually or as a complete package paired with a heavy-duty CV driveshaft. For comprehensive internal maintenance, we stock highly detailed
master rebuild kits from Crown Automotive, complete with all essential bearings, needle bearings, and oil seals. Address internal chain slap effectively with a premium replacement
drive chain and matching drive sprockets. We carry every internal mechanical piece your transfer case demands: from rugged shafts, shift forks, and shift rails to protective boots and high-volume
oil pumps. To finalize your assembly, our range features precise seal & O-ring sets, genuine
Spicer yokes, factory-style shift knobs, and accurate
4WD indicator switches from Standard Ignition.
Expert Support for Your TJ NP231 Build.
Ensuring your transfer case is sealed and properly aligned is vital for long-term trail dependability. Our
outstanding customer service is here to help you select the exact shafts, chains, and SYE upgrades tailored to your specific model year. With our
fast shipping, your drivetrain components will arrive quickly, keeping your Jeep Wrangler TJ ready to conquer any terrain with absolute confidence.
