Replaces the stretched drive chain inside the NP231/NP233 transfer case so front output stops slipping and 4WD engages solid again.
The NP231 and NP233 transfer cases use a single drive chain to send power from the input gear to the front output shaft. After years of heat cycling and fluid breakdown, the chain stretches, and a stretched chain shows up as a clunk on 4WD engagement, front-axle slip under load, or a rattling/slapping noise from the transfer case at idle. Pulling the case apart to inspect the chain and finding visible slack or worn link plates means it is time to replace it rather than put the case back together on a weak link.
This is a direct replacement drive chain for the NP231 and NP233, fitting the 1989-1997 Jeep Cherokee XJ, 1989-1992 Jeep Wagoneer, 1989-1992 Dodge Dakota and W150, 1998-2004 Chevrolet S10, 1988-1989 S10 Blazer, 1988-1990 GMC S15, and 1988-1989 GMC S15 Jimmy. Cross-references to OEM part number 15581813. Replace it while the case is already open for a clutch, pump, or seal job rather than waiting for it to fail a second time.
| Fits | NP231, NP233 transfer case |
| Vehicle application | Jeep Cherokee XJ 1989-1997, Jeep Wagoneer 1989-1992, Dodge Dakota/W150 1989-1992, Chevrolet S10 1998-2004, S10 Blazer 1988-1989, GMC S15/S15 Jimmy 1988-1990 |
| OEM cross reference | 15581813 |
| Weight | 4 lb |
