NP231 Transfer Case

The Zumbrota Drivetrain RTC231D-1 is a remanufactured NP231 transfer case, meticulously rebuilt to provide reliable performance for your 1988-1992 Chrysler/Dodge Dakota. This transfer case features a synchronized design with a 23-spline input shaft measuring 1.55 inches in exposed length. It is equipped with a bolt-on front output yoke and a 1.75-inch speedometer hole. The rear output shaft is 26-spline, and a shift indicator is located in the tail housing. Specific tag numbers associated with this unit include 4338249, 4505528, 52005462, 52005467, 52008206, 52097606, 52097607, 53005467, 53006099, 53007970, 53007979, 53008206, 53008249, with Hollander number 412-217 and other number UMT308-1. Zumbrota Drivetrain's remanufacturing process involves thorough inspection of cases and internal components for wear, including cracks, stripped threads, shaft straightness, gear wear, and chain stretch. Components are cleaned using a hydro-blast rinse and blasting procedure, followed by a proprietary shot-enticed deep cleaning. Each unit is fully rebuilt with the replacement of all bearings, seals, and viscous couplers. The finished units are spun tested to ensure proper shift-ability and quiet operation. To prevent damage during transit, all transfer cases are shipped in high-density plastic totes.