PLUG DRAIN/FILLER T84/T90
1/2 NPT Thread
Drain/Filler Plug T84/T90 Transmission
Original type plug for drain and filler positions
Correct drain and filler plug for T-84 and T-90 transmissions, as well as Dana 18 transfer case. Suitable for both drain and filler position on the transmission and transfer case filler position. Original Willys-Overland number WO-A-5140.
Application T-84 & T-90 transmission, Dana 18 transfer case | Original number WO-A-5140 / FM-358040-S |
Positions Drain & filler transmission, filler transfer case | Quantity required 2 pieces per transmission |
Features
- Suitable for T-84 transmission (Willys MB, Ford GPW) and T-90 transmission (CJ-2A, CJ-3A, CJ-3B, M38, M38A1) Original type plug for both transmission positions: drain (bottom) and level/filler (side) Also correct for Dana 18 transfer case filler position Original Willys-Overland number WO-A-5140, Ford equivalent FM-358040-S Essential component for correct transmission and transfer case service Required at each oil change service according to TM 9-803 procedures
★ Universal plug for both T-84 and T-90 transmission drain and filler positions. On T-84 with side-mounted plugs (early version, before mid-1943), accessibility may be limited — remove skid plate if necessary or use open-end spanner with extension. T-90 has top-shifter mounting for easier access.
📖 From the Technical Manual
Mounting
- 1. Remove old plug with open-end spanner or square socket 2. Check oil level: oil should reach bottom of filler opening 3. Top up if necessary with GL-4 transmission oil (GL-1 for early specifications) 4. Replace plug and tighten by hand 5. Check for leakage after completion
Specifications
- Transmission capacity T-84: approximately 1.5 pint (0.7L) Transmission capacity T-90: approximately 2.5 pint (1.2L) Transfer case Dana 18 capacity: approximately 3 pint (1.4L) Recommended oil: GL-4 transmission oil (no GL-5 due to brass synchros)
This part is intended for the restoration of historic military vehicles. Fitting, aligning, deburring or reworking is part of that work and is inherent to the nature of these goods. Dimensional variation also exists between original vehicles.
Installation requires technical knowledge of the vehicle. Unsure whether this part suits your version? Ask us before purchase at info@willys.be.
ALL_CATEGORIES : GROUP 07 - Transmission Willys MB Ford GPW M201, GROUP 07 - TRANSMISSION CJ3A, GROUP 07 - TRANSMISSION - M38, GROUP 07 - TRANSMISSION CJ3B
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| Willys MB (early) | 1941, 1942 |
| Willys MB | 1942, 1943, 1944, 1945 |
| Ford GPW | 1942, 1943, 1944, 1945 |
| Hotchkiss M201 | 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966 |
| Willys M38 | 1950, 1951, 1952 |
| Willys M38A1 | 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971 |
| CJ series | |
| Jeep CJ-2A | 1945, 1946, 1947, 1948, 1949 |
| Jeep CJ-3A | 1949, 1950, 1951, 1952, 1953 |
| Jeep CJ-3B | 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968 |
📐 Diagrams & technical drawings
From the original Technical Manual CJ2A_PL_1949 — Parts List — only for Willys CJ-2A / CJ-3A (1949)
From the original Technical Manual TM 9-1803B — Ordnance Maintenance — Power Train, Body & Frame — only for Willys MB / Ford GPW (¼-ton 4×4)
