GM used the New Process NP208C chain drive part time transfer case for Blazers, Jimmys, Suburbans,1/2 ton and 3/4 ton "square" body style pickups from 1981 through 1987. For the 1988 model year, the NP208C was only installed in Blazers, Jimmys, and Suburbans. The NP208C is a light weight aluminum case transfer case is synchronized between 4x2 and 4x4 modes for use with automatic locking hubs. NP208C Transfer Cases have a 1:1 high range and 2.61:1 planetary gear low range. The NP208C generally provides reasonable service for the average user, but it was never considered to be a particularly strong or durable unit in full size trucks used for tough vocational or off road applications. The NP208C was replaced in Blazers, Jimmys, and Suburbans by the New Process NP241C transfer case effective with the 1989 model year.
NP208 Transfer Cases use a unique mix of ball, caged needle, and flat thrust bearings. The small diameter of the thrust bearing rollers make these transfer cases particularly sensitive to severe damage from low, incorrect, or contaminated lube oil. If you have your NP208 apart, you should replace ALL the bearings while you are it. Failure to do so may lead to the catastrophic failure of one or bearings and the destruction of hard parts that are now almost impossible to find
QU50924 GM NP208 Transfer Case Bearing and Seal Kit Includes all the bearings and seals you need to rebuild your 1981 to 1988 Chevy or GMC New Process NP208 Transfer Case
QU50114 1 Piece Transfer Case Mainshaft Front Pilot Bearing and Cup is an original equipment, unitized drawn cup bearing that replaces X10000 Bearing and QU50083 Sealing Plug in many New Process Chevy and GMC NP208 chain drive transfer cases. The one piece design of this bearing simplifies installation. This Bearing fits in the back of the input shaft to support the front of the mainshaft (rear output shaft) Made in U.S.A.
QU50940 Planetary Annulus Bushing for New Process NP208 chain drive transfer cases.
In New Process NP208 Transfer Cases, the Drive Chain is only under power in 4x4 modes. For 4x2 operation, the input shaft is directly coupled to the rear output shaft. Contrary to popular belief, a worn or stretched NP208 chain can not cause a clunk in 4x2 mode, however a stretched chain CAN and will wear a hole in the soft aluminum transfer case if it sags enough to contact the housing. If you are rebuilding the NP208 transfer case in your vintage 4x4 REPLACE the chain!
QU50265 Morse® Transfer Case Chain for GM NP208 Transfer Cases Is a genuine Morse® original equipment replacement Drive Chain for all 1981-1988 Chevy Blazer, GMC Jimmy plus Chevy/GMC 1/2 ton and 3/4 ton 4x4 trucks with the original New Process NP208C Aluminum Case, Chain Drive Transfer Case
QU30212 New NP208C Front Case Half for 1981-1988 Chevy and GMC Trucks.
QU30214 Bare Rear Extension or Tailshaft Housing for Chevy and GMC NP208C Transfer Cases. Casting Number is 15162.
QU30215 New Rear Case Half with Bearing for 1981-1988 Chevy and GMC New Process NP208C transfer cases.
QU30270U Good Used Transmission Crossmember for 1987-1991 Square Body Style 4x4's with 5.7L (VIN K), 7.4L (VIN N), or 6.2L (VIN C,J) Engines
QU30271U Used Transmission to Transfer Case Adapter for 1985-1991 GM K1500, V1500, K2500, V2500 WITH MD8 4L60 Automatic Transmission
QU30272U Good Used Transfer Case Torque Strut for 1981-1991 Square Body Style Chevy and GMC 1/2 Ton or 3/4 Ton 4x4's.
QU50940 Planetary Annulus Bushing for New Process NP208 Chain Drive Transfer Cases
QU51109 New Mode Fork for 1981-1988 GM NP208C Part Time New Process Transfer Cases
QU50071 NP208C Transfer Case Drive Chain 1-1/4" wide Genuine Morse HY-VO™ USA made original equipment transfer case drive chain Made in U.S.A.
QU30042 Transmission to Transfer Case 6 Bolt Round Gasket for 1981-2002 GM NP208 Transfer Cases, Aftermarket Replacement
TK30052 6 Bolt Round Transfer Case Adapter Gasket fits between your GM 4x4 transmission and 32 spline input transfer case. TK30052 is the current original equipment service part for GM 32 spline input NP208 mounted behind automatic transmissions. Made in U.S.A.
QU51131 Gasket and Seal Kit for 1980-1988 New Process NP208C Transfer Cases in Full Size Chevy/GMC 4x4's
TK10517 Genuine NPG Transfer Case Input Seal for many New Process aluminum case transfer cases. Fits NP208C, NP241C, 32 Spline Input GM models behind automatic and manual transmissions. This genuine New Process original equipment quality Seal is a double lip, double spring seal designed to retain fluids from either direction. Made in U.S.A.
Also see lower cost QU50461 replacement seal.
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QU50461 Double Lip Input for many New Process aluminum case transfer cases. Fits NP208C 32 Spline Input GM models behind automatic and manual transmissions. QU50461 imported replacement Seal is a double lip, double spring seal designed to retain fluids from either direction. Made in Taiwan
Also see Genuine NPG TK10517 Premium OEM seal.
Link to our QU50461 quad4x4.com Large Text Product Page
QU50514 Transfer Case Output Seal is a genuine NPG original equipment Seal with triple seal lip construction. The protective outer lip deflects road splash and debris and the inner 2 lips seal oil in. QU50514 fits 1981-1988 chain drive New Process NP208C Transfer Cases with fixed type 1-7/8" hub diameter, front output yokes. Made in U.S.A.
TK10513 Spline Seal for 32 Spline Output Shafts and Remote Mount Input Shafts (Also known as Splined Washer) is a genuine New Process part used to seal oil from leaking past the yoke splines on most New Process 32 Spline front or rear Fixed Yoke Output Shafts. This 32 Rubber Spline Seal is approximately 0.182" thick. You will find this washer used on such popular chain drive transfer cases such as the NP208 series. Made in U.S.A.
Sometimes, you just need one or two small parts to get back on the road. Between the small parts listed in this section and many others listed under part specific headings elsewhere on the page, we probably have that pesky little part you have to have but just can't find anywhere else.
QU10512 Front Output Flange Nut For 1981-1988 Chevy or GMC New Process NP208 transfer cases equipped with either square or round front output flanges. Alloy flange nut is 7/8" extra fine thread and plated for anti-corrosion protection. Made in U.S.A.
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QU10802 Oil Pump Feed Tube to Oil Pump O-Ring for most New Process chain drive transfer cases to seal the connection between your oil pump and the oil pump feed tube. This O-ring is found on many models of New Process transfer cases in Chevy/GMC 1980's to the present. Some of the common matching parts are QU50423 oil pump, QU10936 oil pump and QU10823 Oil Pump Feed Tube. Imported.
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QU10979 New Process Transfer Case Synchronizer Strut Tension Spring Two of these springs are used in 1981-1988 Blazer, Jimmy, Suburban, K10, K1500, K20, K2500 NP208C synchronized transfer cases to apply tension to the three QU10821 Synchro struts or keys. Made in U.S.A.
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QU50945 Input Thrust Washer for New Process NP207 and NP208 Transfer Cases. Inside diameter 2" by 3/32" thick.
QU30268 31 Based on 32 Spline Rear Output Slip Yoke for GM NP208C transfer cases. Approx. 8" long from end to center.
QU30211 New 18 Tooth Blue Speedometer Drive Gear for Chevy and GMC NP208 transfer cases.