GEAR FLYWHEEL RING 129 TEETH M38A1
Flywheel ring gear 129 tooth
For F-134 Hurricane engine
Replacement flywheel ring gear with 129 teeth for jeeps fitted with the F-134 Hurricane four-cylinder engine. This ring gear is suitable for vehicles from the 1952-1971 period and is fitted to the flywheel by heating. Verification of the tooth count is essential as not all vehicles retain their original engine.
|
Material Hardened steel |
Tooth count 129 teeth |
|
Engine type F-134 Hurricane 4-cylinder |
Fitting By heating shrink/expansion |
Features
- 129 teeth for F-134 engine
- Suitable for 1952-1971 production
- Replaces original part number 802925
- Compatible with 9-tooth starter pinion
- Same inner diameter as 124-tooth version
★ High-quality replacement flywheel ring gear, designed for long service life and reliable starting system operation on F-134 engines.
Application
Suitable for M38A1 (1952-1966), CJ-3B (1953-1964), CJ-5 (1955-1971), CJ-6 (1955-1971), M170, FC-150 (1957-1964), and Willys Pick-up/Station Wagon/Sedan Delivery (1953-1963) fitted with F-134 Hurricane engine. Also suitable for late CJ-3A (after serial number 30973) and some early models from 1949-1953 period with F-head engine.
Installation notes
Removing old ring gear: heat the damaged flywheel ring gear to remove it from the flywheel. Fitting new ring gear: heat the new ring gear until it expands sufficiently to slide over the flywheel, position correctly and ensure it is fully seated after cooling. Note: the transmission is best removed for this work. Always verify compatibility with the fitted starter motor (must have 9-tooth pinion).
Compatibility
DOES NOT FIT: MB, GPW, early CJ-2A, early M38 and early CJ-3A (before serial number 30973) — these use 97-tooth or 124-tooth flywheel ring gears. The 129-tooth ring gear requires a starter motor with 9-tooth pinion. Whilst the inner diameter is the same as other ring gears, the tooth count must match the starter motor for correct engagement. Always verify the existing tooth count before replacing.
Historical context
The 129-tooth flywheel ring gear was introduced for later Willys vehicles fitted with the F-134 Hurricane engine, which replaced the earlier L-134 Go Devil. This configuration became military standard for the M38A1 and remained in use until the early 1970s on civilian CJ models.
This description was generated automatically. Unsure about fitment? Contact us at info@willys.be.
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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 : CRANKSHAFT CJ3A, LOWER ENGINE M38, CRANKSHAFT - M38, CRANKSHAFT CJ3B
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| 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-3B | 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968 |
| Jeep CJ-5 | 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983 |
📐 Diagrams & technical drawings
From the original Technical Manual CJ2A_PL_1949 — Parts List — only for Willys CJ-2A / CJ-3A (1949)
