BW4481 Rebuilt Transfer Case (NR3) 03-06 | Fits Cadillac Escalade & GMC Denali

This BW4481 remanufactured transfer case for sale is a direct replacement unit which fits 2003-2006 Cadillac Escalade and GMC Yukon Denali equipped with AWD systems and RPO code NR3. Built by Borg Warner as a single-speed, chain-driven, all-wheel drive transfer case, the BW4481 is paired with the 4L60E / 4L65E automatic transmission and features a 27-spline input shaft, making it the correct factory-spec replacement for the LQ4 6.0L Vortec-powered luxury SUVs of this generation. Best of all, no core is required, your 18 month unlimited mileage warranty starts the moment your unit arrives, with no return shipping hassle and no core fees to worry about. Each unit is fully rebuilt with upgraded internal components to improve durability, lifespan, and overall performance. Our precision remanufacturing process for the BW 4481 is designed to eliminate all common failure points found in the original factory unit and every transfer case is spin-tested to OEM standards before it leaves our shop. We are the most affordable, fully rebuilt option in the United States, offering exceptional quality at the best value with absolutely no compromises. This unit is currently on sale, making now the perfect time to replace your worn OEM unit! About This Unit The BW4481, also written BW 4481 or referred to as the NR3 transfer case after its GM RPO code, was introduced by BorgWarner as the OEM transfer case for 2003-2006 Cadillac Escalade and GMC Yukon Denali AWD models. It is a single-speed, chain-driven, all-wheel drive unit with high-pressure die-cast magnesium case halves, a 27-spline input shaft, and a 32-spline slip-yoke rear output. The BW4481 mates exclusively to the 4L60E and 4L65E four-speed automatic transmissions behind the LQ4 Vortec 6.0L V8, and uses GM’s brake-based VSES (Vehicle Stability Enhancement System) traction control rather than a viscous coupling to manage front-to-rear torque distribution. The Borg Warner 4481 transfer case was offered with multiple OEM tag numbers depending on production year and configuration, including 12575087, 12576706, 12578859, 12580561, 12581644, 12588229, 12589499, 24231475, 24232827, and 89048543, all of which fall under Hollander Number 412-581. Buyers should confirm their RPO code is NR3 before ordering, as the same generation of GM luxury SUVs offered an alternate AWD unit (the NVG149 under RPO code NP3) which is not interchangeable with the BW4481. For Escalade and Denali owners looking to keep their truck on the road, our remanufactured BW4481 delivers OEM fitment, function, and reliability at a fraction of dealer cost. Need the 2007-2014 version of this transfer case? We also carry the BW4485 for next-generation Escalade, Denali, and Yukon AWD applications.