NP231 Transfer Case, 23-Spline Front Bolt-On Yoke, Rear 27-Spline Slip Yoke

The Zumbrota Drivetrain NP231 transfer case offers a reliable, remanufactured solution for 1987-1995 Jeep Cherokee and Wrangler vehicles. This unit is meticulously rebuilt to exacting standards by expert craftsmen, ensuring confidence and satisfaction during operation. Each case and its internal components undergo thorough inspection for wear, including cracks, stripped threads, shaft straightness, gear wear, and chain stretch. Zumbrota Drivetrain employs an exclusive Hydro-blast rinse and blasting procedure, followed by a proprietary shot-enticed deep cleaning process for both internal and external parts. This transfer case is fully rebuilt with the replacement of all bearings, seals, and viscous couplers. To guarantee optimal performance, every finished unit is thoroughly spun tested for shift-ability and noise. The transfer cases are shipped in high-density plastic totes to prevent damage during transit. Key specifications include a 23-spline input shaft with a 1.55-inch exposed length, a bolt-on yoke for the front output, and a 27-spline slip yoke for the rear output. It also features a two-piece tail housing, a 1.75-inch diameter speedometer hole, and a two-pin shift indicator switch. This transfer case comes with a 2-year limited warranty.