BW4485 Denali, Escalade, Sierra, Silverado 1500, Suburban & Yukon 2007-02009 Transfer Case Buy Factory Direct & Save, we Ship World Wide!

Midwest Transmission an automotive parts rebulider and re-manufacturer can help you with your BW4485 Transfer Case

Midwest transmission has been in the automotive re-manufacturing and rebuilding business for 19 years, and shipping BW4485 Transfer Case replacementscompleted units world wide. We specialize in manual transmissions, automatic transmission and transfer cases. We can help with improving performance and conversions. To improve quality Midwest was one of the first companies to include dyno testing of manual transmission prior to shipping as a final step in the quality control process. Our factory with 22 employees shipped over 9000 units last year. Guaranteed quality, correct parts supplied and expert help with every step in the process. You can see the complete line of products that we offer www.midwesttrans.com.

Take advantage of our BW4485 free technical expertise!

Having issues diagnosing problems with your BW4485 transfer case? We can help free knowledgeable technical support! To speak to a Drivetrain Expert or to place an order call us toll free 888-824-2012. We have a large inventory of rebuilt BW4485 transfer cases plus Transfer Case parts. Our factory rebuilt re-manufactured transfer cases are tested before leaving our factory to ensure quality, saving you both time and money!

Below you will find a detailed list that includes rebuilt re-manufactured BW4485 Transfer Cases, a complete parts list including: bearing rebuild kits including, seal. If you need more information or cannot find the parts you need give us a call, if you would like to save money, ask about our good take out parts (GTO), they are inspected and guaranteed.

Our rebuilt transfer Cases include all new bearings, gaskets, seals, chains clutch and viscous couplers where used. These units are tested before leaving the factory.

About the BW4485

The BW4485 design includes the use of a planetary differential enables the use of the Vehicle Stability Enhancement System (VSES) in larger GM upper end vehicles. The VSES makes use of the planetary differential, by utilizing braking to a tire that has less traction and dividing the engine torque to the other axle.

The Borg Warner 4485, is RPO NR3 transfer case it is a single speed, full-time, all wheel drive (AWD), transfer case. The transfer case provides power to axles, 40/60 torque divide, front/rear, full time through an external planetary type differential, which has two different sets of pinion gears. Both axles are constantly being driven for maximum traction in every conditions, have proven to provide slightly lower fuel mileage and more tire wear.

The transfer case external type planetary differential functions the same as a typical (open) rear differential, differential pinion gears work as spider gears, as well as the sun gears function as side gears. The BW4485 case halves are high-pressure, die-cast magnesium. Ball bearings support the input shaft, the front output shaft, as well as the rear output shaft. The input shaft delivers the power to the planetary differential. The case of the planetary differential is splined to the input shaft. The front sun gear is engaged with the drive sprocket, which drives the chain for the front output shaft, and power is sent to the front dtive shaft.

Potential problems with the BW4485 Transfer Case

This unit can have issues with case failure caused by out of balance rear driveshafts, at the first sign of vibration it is time to get the driveline inspected, repaired and high speed balanced before case failure. High mileage will contribute to failure of the range hub, range fork and input shaft, this failure is exhibited by the unit popping out of gear. Be sure that at each oil change you check the fluid level in the BW4485. Recommended fluid for the BW4485 transfer case is Dextron VI.

If you have purchased your Denali, Escalade, Sierra, Silverado 1500, Suburban & Yukon used the very first order of business is to double check the tire diameters and tire pressure. Used car dealers may have mismatched the tires to make the sale. Mismatched tires will cause the BW4485 transfer case to fail.

The correct quality parts the first time!

In addition to a rebuilt 12 month warrantied BW4485 transfer cases we offer all parts required to rebuild your unit, we have new parts and per your request we can provide good used takeout parts to save you money! Part identification can be a problem and knowing just what parts need to be replaced is an issue, we can help by identification of associated parts that should be replaced when one part fails. Take advantage of our expertise! Buy parts from Midwest Transmission Center and receive bonus free telephone expertise to assist you in diagnosing the problem, part(s) required and additional phone assistance when you are in the re-assembly processes if required. We have a large inventory of rebuilt BW4485 transfer cases plus Transfer Case parts. Our factory rebuilt re-manufactured Transfer Cases are tested before leaving the factory. Save yourself time and money! Rebuilt BW4485 transfer cases include all new bearings, gaskets, seal, clutch parts, chains and filters.

We can assist you with the correct identification of the parts you need, don't see what you need just give us a call 888-824-2012.

Applications   Model Years
Escalade 32 Spline input, 32 Spline rear, female front output AWD 2007-2008
Yukon 32 Spline input, 32 Spline rear, female front output AWD 2007-2009
Silverado 1500 32 Spline input, 32 Spline rear slip yoke, female front output AWD 2007-2008
Sierra 32 Spline input, 32 Spline rear slip yoke, female front output AWD 2007-2008
Denali 32 Spline input, 32 Spline rear slip yoke, female front output AWD 2007-2008
Suburban 32 Spline input, 32 Spline rear, female front output AWD 2009

BW4473 identification tag

Need Stronger Parts?

Cryogenic Treat any shaft or gear. This cry treatment will add 30% in component strength. Call 888-824-2012 for a quote.

This information tag is located on rear of transfer case near where the driveshaft exits. Please supply the assembly number when ordering a replacement.

Rebuilt Tested BW4485 Transfer Cases 12 Month Warranty

Year Model # Part Number Application Model Notes Core Your Cost
2007-UP BW4485 TCGM062 Escalade, Yukon, Sierra, Denali, Suburban OPT NR2 $350.00 $1,600.00

Rebuilt Bearing Kit, Seals BW4485 Transfer Cases

Year Part Number Application Model Notes Your Cost
2007-Up TRSBK4485 Bearing Overhaul Kit $123.93