Remanufactured NP231 Transfer Case

The Zumbrota Drivetrain RTC231J-4 is a remanufactured NP231 transfer case meticulously rebuilt to exacting standards for Jeep vehicles from 1989 to 1995. Specifically designed for the Jeep Wrangler (1989-1995), Jeep Cherokee (1991-1995), and Jeep Comanche (1991-1992), this unit ensures reliable power delivery for your off-road adventures. This transfer case boasts a 23-spline input shaft with a 0.75-inch exposed length, a bolt-on front output yoke, and a slip-yoke style rear output shaft. It also includes a 1.75-inch diameter speedometer hole and a 2-wire shift indicator switch conveniently located above the shift lever. The unit features a 2-piece tail housing and is compatible with specific tag and Hollander numbers, including 52093497 and 412-210. Zumbrota Drivetrain's remanufacturing process involves rigorous inspection of all internal components for wear, including cracks, stripped threads, shaft straightness, gear wear, and chain stretch. They employ an exclusive hydro-blast rinse and blasting procedure, followed by a proprietary deep cleaning process. Each transfer case is fully rebuilt with the replacement of all bearings, seals, and viscous couplers. To ensure optimal performance, every unit undergoes thorough spin testing for shiftability and noise. Finished units are shipped in high-density plastic totes to prevent damage during transit, ensuring they arrive in excellent condition. This commitment to quality and detail ensures a confident and satisfying driving experience.