SLEEVE BLOCK CYLINDER ENGINE

EARLY MBMBM201CJ2AM38A1M38GPWCJ3ACJ3B
Manual available
Price available when back in stock
SKU:  WOA6055
GTIN (EAN,ISBN): 15A1+C.7L
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War Dept specs from the original Technical Manual — click to open

Cylinder Sleeve Engine Block L-134

Sold individually

Precision replacement sleeve for the L-134 engine block. This cylinder sleeve is essential for engine restoration when original cylinder walls are worn or damaged. Manufactured from cast iron for maximum durability and heat dissipation.

Material

Cast iron

Bore inside diameter

125" (79.4 mm)

Wall thickness

125" (3.2 mm)

Length

125" (206 mm)

Features

  • Precision cast iron construction for optimal heat dissipation
  • Inside diameter 3.125" (79.4 mm) — standard bore
  • Wall thickness 0.125" for structural strength
  • Length 8.125" — full cylinder length
  • Suitable for L-134 and F-134 engines
  • Sold individually (4 pieces required per engine)

★ Quality replacement sleeve for engine restoration. Professional installation by machine shop required.

Application

This cylinder sleeve fits vehicles equipped with the Willys L-134 'Go Devil' flathead engine and the later F-134 'Hurricane' engine. This includes military vehicles built between 1941-1952 and civilian jeeps up to the early 1960s. Suitable for both chain-driven (early) and gear-driven (late) camshaft variants.

Installation notes

Professional installation by experienced machinist required. Engine block must be bored to correct tolerance (interference fit of ±0.002" for cast iron). Sleeve must be pressed using hydraulic press or installed with heat-shrink technique (heat block, cool sleeve). After installation, the interior must be finalised by honing to exact piston size. Check protrusion height above block deck according to factory specifications.

Compatibility

Fits all L-134 (134 ci flathead) and F-134 (134 ci F-head) engines with standard 3.125" bore. NOT compatible with already oversized bored blocks without further machining. Each engine requires 4 cylinder sleeves. Combine with matching pistons, rings and bearings for complete engine restoration.

Historical context

The L-134 'Go Devil' engine became the standard for Allied jeeps during WWII thanks to the design by Willys' chief engineer Delmar 'Barney' Roos. This robust flathead four-cylinder produced 60 bhp and earned legendary reliability in harsh conditions, both during the war and in later civilian applications.

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

Restoration part — not a ready-to-fit product

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.

COMPATIBLE_MODELS EARLY MB, MB, M201, GPW, CJ2A, CJ3A, CJ3B, M38, M38A1
ALL_CATEGORIES : Piston,Rings & Bearings CJ2A, Pistons And Sleeve CJ3A, Piston,Rings & Bearings M38, Pistons And Sleeve - M38, Pistons And Sleeve CJ3B

This part fits:

ModelYears
Military jeeps
Willys MB (early)1941, 1942
Willys MB1942, 1943, 1944, 1945
Ford GPW1942, 1943, 1944, 1945
Hotchkiss M2011956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966
Willys M381950, 1951, 1952
Willys M38A11952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971
CJ series
Jeep CJ-2A1945, 1946, 1947, 1948, 1949
Jeep CJ-3A1949, 1950, 1951, 1952, 1953
Jeep CJ-3B1953, 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)

Group 10-06 — Pistons and Pins
Group 10-06 — Pistons and Pins
Page 22–23

From the original Technical Manual TM 10-1513 — Maintenance Manual — only for Willys MB / Ford GPW (1942)

Engine — Block, Crankshaft, Camshaft, Pistons, Valves
Engine — Block, Crankshaft, Camshaft, Pistons, Valves
Page 18–37