FORD GPA GPW WILLYS MA MB SHORT CYLINDER HEAD STUD
Short cylinder head stud for L-134 engine
7/16"-14 NC x 7/16"-20 NF x 3" 7/16"
Short cylinder head stud for securing the cylinder head to the engine block of the L-134 'Go Devil' engine. Manufactured from high-quality drawn steel alloy for reliable performance under high tension.
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Material High-quality drawn steel alloy |
Thread 7/16"-14 NC (coarse) / 7/16"-20 NF (fine) |
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Length 3" 7/16" (approx. 87 mm) |
OEM number Ford GPW-6067 / Willys WO-A1548 |
Features
- High-quality steel alloy for maximum strength
- Coarse thread (NC) for mounting in engine block
- Fine thread (NF) for cylinder head nut
- Original specifications according to Ford GPW-6067 / Willys WO-A1548
- Suitable for engines with fully studded cylinder head
★ This cylinder head stud is manufactured to original military specifications and provides the reliability required for correct cylinder head attachment.
Application
This short stud is suitable for Ford GPA (amphibious vehicle), Ford GPW, Willys MA and Willys MB vehicles with L-134 engine. From MB serial number 288835 onwards, the system changed from cylinder head bolts to studs with nuts. Multiple short studs are required per cylinder head in combination with long studs — verify the configuration of your specific engine.
Installation notes
Install the short stud with the coarse thread (14 NC) into the engine block. Always use thread sealer on the block side to prevent coolant leakage. The fine thread (20 NF) is for the cylinder head nut. Torque to specified value (60-70 lb/ft) and re-torque after initial running hours to ensure proper gasket seal.
Compatibility
Please note: not all L-134 engines use the same cylinder head attachment system. Early MB/GPW engines (up to serial number MB288835) used cylinder head bolts instead of studs. From that serial number onwards, the system changed to a combination of studs and nuts. Verify the original configuration of your engine before ordering.
Historical context
From mid-1943 onwards, Willys changed from cylinder head bolts to a system with studs and nuts for improved reliability and easier maintenance of the L-134 engine.
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 : Upper Engine – Cylinder Head, BOLTS 01 ENGINE, STUDS & PLUGS CJ2A, UPPERENGINEHEAD CJ3A, Engine complete
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 (early) | 1956, 1957, 1958, 1959 |
| Hotchkiss M201 | 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966 |
| Willys M38 | 1950, 1951, 1952 |
| CJ series | |
| Jeep CJ-2A | 1945, 1946, 1947, 1948, 1949 |
| Jeep CJ-3A | 1949, 1950, 1951, 1952, 1953 |
📐 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)
