Remanufactured NV4500 Manual Transmission

The Zumbrota Drivetrain RMT4500C-9 is a remanufactured NV4500 manual transmission, precisely built for demanding applications. This unit is engineered for 1999-00 GM 2500/3500 and 2001-04 GM 2500/3500 Non-HD 4WD vehicles, specifically noting that the exhaust hanger bolts to the bell. Constructed with a durable cast iron case, this transmission features a detachable bell housing and an internal slave cylinder for a cleaner setup. It includes a synchronized reverse gear, ensuring reliable operation. Key identifying cast numbers for the main case include 18157, 23167, or 33903, while the top cover is cast 18860 or 25137. The tail housing is identified by cast number 18306. Zumbrota Drivetrain implements a rigorous three-step inspection process during the remanufacturing of this transmission. A pre-inspection verifies the core unit is free from case cracks and excessive wear. During the remanufacturing process, all component parts are inspected to meet OEM specifications. A final post-build inspection ensures the unit adheres to strict standards, including 100% inspection of internal parts such as gear wear, mainshaft straightness, and synchronizer function. Each remanufactured transmission is dyno tested and run through numerous real-life scenarios to guarantee performance and reliability. This meticulous testing process ensures that the NV4500 manual transmission is ready for demanding off-road and towing capabilities.