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23 Turner Rd., Roberts, Montana 59070
 CALL  406-446-2427
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Transmission & Transfer Case Parts

Torque King® NP205
Master Overhaul Kit

THE ONLY KITS ON THE MARKET THAT INCLUDE  IDLER SHAFT SHIMS AND ALL SMALL PARTS!

Torque King™ Master NP205 Overhaul Kit is the highest quality and most complete NP205 overhaul kit available for your rugged GM NP205 transfer case bar none.  Kit includes American made ball bearings, Timken tapered roller bearings, Torrington straight roller bearings, genuine New Process precision thickness gaskets (critically important for bearing clearances), 4 case access hole plugs, thrust washers, thrust washer pins, lock rings, detent springs, detent balls, roll pins, stainless steel cotter keys, idler shaft shims, National and Chicago Rawhide Seals, spline seals, and threadlocker.  1980-1991 Kits for cases with slip yoke rear outputs also include rear output bushing. Kits for cases with fixed rear output include special double rear output seal set.  Nearly all components Made in U.S.A., but some pieces are imported.

TK2029 Master Overhaul Kit for GM NP205 with 27 spline input (Turbo 350 automatic transmission)  $499.95
TK2030 Master Overhaul Kit for GM NP205 with 10 spline input (SM465 4 speed manual transmission) to 1979 $499.95
TK2031 Master Overhaul Kit for GM NP205 with 32 spline input to 1979 (Turbo 400 automatic transmission) $499.95
TK2032 Master Overhaul Kit for GM NP205 with 10 spline input (SM465 4 speed manual transmission) to 1980-1984 with slip yoke rear output.
TK2034 Master Overhaul Kit for GM NP205 with 32 spline input to 1980-1984 with Slip Yoke Rear Output and Turbo 400.

QU30000 10 Spline Coupler

Need a new transmission to transfer case coupler for your vintage Chevy or GMC 4x4?  We currently have 2 types available. 

QU30000 SM465 to NP205 Torque King® 10 Spline Coupler.  Includes 2 internal grooves with snap rings to keep Coupler properly centered on the 2 shafts.  Splines cut in Italy, but Coupler is finished in U.S.A. $109.95
QU30001 Turbo 350 to NP205 27 Spline Coupler includes one internal grrove in center with installed snap ring to keep coupler centered between the 2 shafts. Made in Italy $139

HISTORY (continued from top of page)

... which was arguably the best transfer case ever installed in 1 Ton and smaller trucks, first appeared in 1/2 and 3/4 ton pickups starting in late 1969.  For 1973, GM introduced the heavy, cast iron,  NP203 chain-drive, full-time transfer case and used it on most automatic transmission equipped trucks through the 1979 model year.  Despite it's extreme weight and rugged front range section, the 3-section NP203 was overall a fairly weak unit due in part to it's chain drive and inner-axle differential.  Many fuel-sucking 203's were converted to part time by a variety of conversion kits that modified the differential and disconnected the chain and front output shaft from the rear output shaft.  Most conversion kits were poorly engineered and none solved the lubrication issues resulting from the conversion because the NP203 depended upon the chain to carry oil up to the upper shafts.  Very few converted 203's lasted more than a year or two before suffering expensive lubrication related failures.  Interestingly, the NP203 front range section is now in demand as a doubler box for providing double low range capabilities on custom offroad rigs.  The rugged and reliable, part-time, NP205 with a fixed rear output shaft was also used from 1973-1979, primarily on vehicles with the SM465 4 speed manual transmission. 

The NP205 was the sole transfer case choice for all 1980 GM  4x4's and all 1981-1991 K/V 1 ton 4x4's with the square body style.  GM used an ill-starred, fully synchronized version of the NP205 on trucks with automatic hubs beginning in 1982.  Most 1980 to 1991 GM NP205 Transfer Cases use a Slip Yoke type rear output.  The 1991 V3500 was the last GM production model equipped with a NP205. 

Starting in 1981 and used through 1988, GM full-size trucks of up to 3/4 ton rating came with the lightly built, synchronized,  aluminum housing, NP208 chain drive, part-time transfer case.  The 208 used a planetary gear set for low range, which has been used on all subsequent 2 speed transfer cases used by GM.  Manual Shift NP241 transfer cases debuted in 1988, while the electric shift NP243 version of the same case hit the market in 1991.  GM has also used a plethora of other cases in various full size models from 1988 on including the Borg Warner 1370/1372 (1988-2000),  Borg Warner 4401/4470 (1989-2000), Borg Warner 4481/4483 (intro 2003), New Venture 261 Manual Shift (1999-2007), New Venture 263 Electric Shift (1999-2007), New Process 243 Electric Shift (1994-2007), New Venture 246 (1998-2007), New Venture 4481/4482 Single Speed (intro 2003), and starting in 2007 cases from Magna Corporation (Magna now owns the New Process Plant in Syracuse, NY which produced New Process and New Venture Transfer Cases.).  GM 4500 and 5500 Medium Duty trucks use a remote mount, electric shift, NP273.

GM introduced the mid-size S10/15 series 4x4's in 1983 which initially used a NP207 chain drive case. The NP207 was used until 1988.  Subsequent mid-size 4x4's used mostly New Process/New Venture units including the 136 Single Speed plus the following 2 speed models: 231 Manual Shift, 233 Electric Shift, and 246.  Borg Warner 4472 cases equip some 1995-1997 4x4's.

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