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Borg-Warner T90 Transmission Parts

1941-1971 Jeep CJ

The Borg-Warner T90 transmission was one of the most common transmissions found in 1946 to 1971 Jeeps. Because of its long production span, it is nearly legendary. It is a good transmission when well maintained and has often been adapted to V8, V6 and I4 power.

The T90 was the improved progeny of the T84, of military MB & GPW fame. The T90 was the standard three-speed as found in CJ Universals, Utility Trucks & Wagons, J Series and Forward Control Trucks.

Click on Images / Number Item's to Find Parts in Table Below

Transmission Overhaul Kit Internal Parts Kits Internal Parts Kits Gear Kit & Case Gear Kit & Case Gasket Kit Small Parts Kit Small Parts Kit Small Parts Kit Small Parts Kit T90 3 Speed Transmission Top Cover Assembly Transmission Bearing Retainer Transmission Bearing Mainshaft Bearing Transmission Bearing Adapter Input Shaft Mainshaft Mainshaft Nut Mainshaft Felt Seal Mainshaft Washer Mainshaft Bearing Spacer 2nd & 3rd Synchronizer Assembly Blocking Ring Synchronizer Key Synchronizer Spring 2nd Speed Gear Cluster Gear Countershaft Counter Shaft Countershaft Cluster Gear Cluster Gear Spacer Reverse Idler Shaft Reverse Idler Gear Reverse Idler Shaft Plate Shifter Boot Shift Knob Mount Mounting Support Kit Transitional Overhaul Kit Gasket Kit Mounting Support Kit Mount Shift Knob Shifter Boot Transmission Top Cover Assembly

Item Image Description Year Range Comments Part Number Buy Now
1 Transmission Overhaul Kit 1941-1971 Includes Front & Rear Bearings T90BSG $69.99
2 Internal Parts Kit 1945-1971 (See Extended Info) T-90K $559.99
T90 Internal Parts Kit 1941-1971 All 475 (226) Truck & GM V8 Conversion CJ (11.5" Input Shaft) T-90K-L $549.99
Gear Kit + Case 1941-1971 GM V8 Conversion Engine CJ (11.5 Input), Long Shaft T-90KS-L $696.99
5 Gasket Kit 1941-1971 923301 $5.99
6 Small Parts Kit 1945-1971 922607 $25.97
7 T90 3 Speed 1941-1971 642754 $203.99
8 Transmission Top Cover Assembly 1941-1971 With Rails & Forks 946111 $149.99
9 Transmission Bearing Retainer 1941-1971 All 4 Cylinders / Front 640422 $26.99
10 Transmission Bearing 1941-1971 For Input Shaft / Front 8136643 $26.99
11 Mainshaft Bearing 1941-1971 Rear 8136619 $29.99
12 Transmission Bearing Adapter 1941-1971 Rear 644552 $19.99
13 Input Shaft 1941-1971 With 9 1/16 Length & 18 Teeth 640428 $57.99
Maindrive Gear 1941-1971 643246 $72.99
Input Shaft Gear 1941-1971 906203 $115.99
14 Mainshaft 1941-1971 640390 $69.97
15 Mainshaft Nut 1941-1971 940970 $4.99
16 Mainshaft Washer 1941-1971 A1410 $0.99
16a Mainshaft Felt Seal 1945-1949 645980 $0.99
17 Mainshaft Bearing Spacer 1941-1971 643621 $7.99
18 2nd & 3rd Synchronizer Assembly 1941-1971 Includes Blocking Rings 640391 $76.99
19 Blocking Ring 1941-1971 Each 640397 $9.99
20 Synchronizer Key 1941-1971 3 Needed 640395 $1.99
21 Synchronizer Spring 1941-1971 2 Needed 640394 $1.99
22 2nd Speed Gear 1941-1971 With Bushing 906197 $52.99
23 Cluster Gear Countershaft 1941-1971 33 Teeth 906199 $55.99
24 Counter Shaft 1941-1971 640412 $9.99
26 Countershaft Cluster Gear 1941-1971 With 33 Teeth 906200 $140.99
Countershaft Cluster Gear 1941-1971 With 35 Teeth 643702 $139.99
27 Cluster Gear Spacer 1941-1971 802414 $2.99
28 Reverse Idler Shaft 1941-1971 640420 $14.99
29 Reverse Idler Gear 1941-1971 With Bushing 640417 $49.99
30 Reverse Idler Shaft Plate 1941-1971 937459 $1.99
31 Shifter Boot 1941-1971 907107 $6.99
32 Shift Knob 1941-1971 Without Pattern 929393 $6.99
33 Mount 1941-1971 Rear A6156 $12.99
Transmission Mount 1941-1971 Rear 8126799 $13.99
34 Mounting Support Kit 1941-1971 With Bolt & Insulators / Rear 926671K $7.99

Years Covered:  1941, 1942, 1943, 1944, 1945, 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970 and 1971

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