BEARING CRANKSHAFT 020 SET
WOA6747
Crankshaft Bearing Set 0.020" Undersize
Complete with front, centre and rear bearings
Replacement main bearing set for crankshaft, supplied in 0.020 inch (0.508 mm) undersize. Essential for engine overhaul when crankshaft journals have been ground. The set contains all three main bearings: front, centre and rear, ready for installation.
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Specification 020" undersize (0.508 mm) |
Application 4-134 L-head & F-head engines |
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Set contents 3 main bearings (front, centre, rear) |
Type Crankshaft main bearing set |
Features
- 020" undersize specification for ground crankshafts
- Complete with front, centre and rear bearing
- Suitable for both L-134 (flathead) and F-134 (F-head) engines
- Replaces original part number A-6747
- Quality bearings for reliable engine overhaul
★ Essential component for professional engine overhaul. These undersize bearings are used when crankshaft journals have been ground during overhaul to remove damage or wear.
Application
Suitable for Willys MB, Ford GPW, Hotchkiss M201, CJ-2A, CJ-3A, CJ-3B and M38 with 4-134 ci (134 cubic inch) L-head or F-head engine. Application years: 1941-1971. Note: only to be used with crankshafts ground 0.020".
Installation notes
Torque for main bearing cap: 65-75 ft-lbs (9.0-10.4 m/kg). Check crankshaft journal dimension with micrometer before installation — bearings must match ground diameter exactly. Install pre-oiled with engine oil. Use new bolts if originals are damaged or stretched.
Compatibility
Fits all 4-134 engines, both L-head (flathead, chain-driven camshaft) and F-head (Hurricane, gear-driven camshaft). Not compatible with standard crankshafts — exclusively for crankshafts ground 0.020" undersize. For other grinding dimensions, sets are available in standard,.010",.030",.040" undersize.
Historical context
The 4-134 engine was used from 1941 to 1971 in numerous Willys and Jeep vehicles. During WWII, the L-134 'Go Devil' formed the beating heart of the legendary Willys MB and Ford GPW jeeps.
This description was generated automatically. Unsure about fitment? Contact us at info@willys.be.
⚠ Spotted an error in this description? Report it to info@willys.be
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 : Piston,Rings & Bearings CJ2A, CRANKSHAFT CJ3A, Bearings CJ3A, Piston,Rings & Bearings M38, Bearings - M38, CRANKSHAFT CJ3B, Bearings 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 10-1513 — Maintenance Manual — only for Willys MB / Ford GPW (1942)
