Transfer Case Rebuild Bearing, Pump and Chain Kit for Jeep Cherokee and Grand Cherokee NP231J High-Quality Upgrade With 1.00 Inch Wide 31 Link Chain and 38 Spline Oil Pump Input Shaft
✔️ Includes 1.00in wide 31-link chain and 38-spline pump shaft
This kit is a complete rebuild package for NP231J transfer cases used in Jeep Cherokee and Grand Cherokee models. It includes the 1.00 inch wide chain (31 links), a 38-spline oil pump input shaft, seals and O-rings, fork inserts and adapter gasket, planet washers, small parts, caged needle bearings, and main roller bearings. Please verify the chain width before purchase, as NP231J cases may use either the 1.00" wide chain or the 1.25" wide chain. The BK231J version comes complete with all new seals & O-rings, fork inserts & adapter gasket, planet washers & small parts, caged needle bearings & main roller bearings.
✅ 1.00 inch wide chain with 31 links
✅ 38-spline oil pump input shaft
✅ Includes seals, O-rings, fork inserts, adapter gasket, planet washers, small parts, caged needle bearings, and main roller bearings
💡 What is a NP231J transfer case rebuild kit with 1.00in chain and 38-spline oil pump shaft used for?
It's designed to support a complete rebuild of NP231J transfer cases in Jeep Cherokee and Grand Cherokee models.
- Restores drive and gear engagement by replacing chain, pump shaft, seals, and bearings
- Helps maintain reliability and smooth shifting after rebuild
- Suitable for Jeep NP231J transfer cases in Cherokee and Grand Cherokee models