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
| Item | Description | Years | Color / Comments | Side | Part Number | Price | Buy Now |
| 1 | Transmission Overhaul Kit | 1941-1971 | Includes Front & Rear Bearings |  T90BSG |
$49.99 | ||
| 2 | Internal Parts Kit | 1941-1971 | (See Extended Info) | T90K |
$539.99 | ||
| T90 Internal Parts Kit | 1941-1971 | All 475 (226) Truck & GM V8 Conversion CJ (11.5" Input Shaft) | T90K-L |
$370.99 | |||
| 3 | Gear Kit + Case | 1941-1971 | Includes: All Internal Parts Kit, All 4 Cylinders & 475 (226) Wagon Plus Kit | T90KS |
$428.99 | ||
| Gear Kit + Case | 1941-1971 | GM V8 Conversion Engine CJ (11.5 Input), Long Shaft | T90KS-L |
$444.99 | |||
| 4 | Transmission Assembly | 1941-1971 | With 9 1/16 Input Shaft | 946109 |
$624.99 | ||
| Transmission Assembly, Long Shaft | 1941-1971 | With V8 GM Conversion Engine | 934319 |
$599.99 | |||
| 5 | Gasket Kit | 1941-1971 | 923301 |
$6.99 | |||
| 6 | Small Parts Kit | 1941-1971 | 922607 |
$20.99 | |||
| 7 | T90 3 Speed | 1941-1971 | 642754 |
$159.99 | |||
| 8 | Transmission Top Cover Assembly | 1941-1971 | With Rails & Forks | 946111 |
$129.99 | ||
| 9 | Transmission Bearing Retainer | 1941-1971 | All 4 Cylinders | Front | 640422 |
$24.99 | |
| 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 |
$16.99 | ||
| 13 | Input Shaft | 1941-1971 | With 9 1/16 Length & 18 Teeth | 640428 |
$107.99 | ||
| Maindrive Gear | 1941-1971 | 643246 |
$69.99 | ||||
| Input Shaft Gear | 1941-1971 | 906203 |
$115.99 | ||||
| 14 | Mainshaft | 1941-1971 | 640390 |
$66.99 | |||
| 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 |
$6.99 | ||
| 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 |
$34.99 | ||
| 23 | Cluster Gear Countershaft | 1941-1971 | 33 Teeth | 906199 |
$31.99 | ||
| 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 |
$104.99 | |||
| 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 |
$53.99 | ||
| 30 | Reverse Idler Shaft Plate | 1941-1971 | 937459 |
$1.99 | |||
| 31 | Shifter Boot | 1941-1971 | 907107 |
$8.99 | |||
| 32 | Shift Knob | 1941-1971 | Without Pattern | 929393 |
$4.99 | ||
| 33 | Mount | 1941-1971 | Rear | A6156 |
$11.99 | ||
| 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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