Piston Pin Lock Hardware

EARLY MBMBM201EARLY GPWGPWCJ2ACJ3AM38M38A1
Manual available
2,19 €
BTW: 0,38 €
SKU:  38118UNF
GTIN (EAN,ISBN): 0.5.4

3/8 x 1 1/8 UNF

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War Dept specs from the original Technical Manual — click to open

Piston pin retaining clip

For connecting rod assembly

Essential retaining clip for the piston pin (wrist pin) that connects the piston to the connecting rod. This spring-loaded clip ensures the piston pin remains in place within the piston, crucial for reliable engine operation. A small but critical component in any engine overhaul.

Material

Spring steel

Type

Retaining clip / snap ring

Function

Piston pin retention

Application

L-134 and F-134 engines

Features

  • Spring-loaded retention for piston pin
  • Prevents axial movement of the pin
  • Important during piston and connecting rod assembly
  • Critical component for engine reliability
  • Always replace during engine overhaul

★ During every engine overhaul, these clips must be replaced — reusing old clips can lead to engine damage.

Installation notes

Always install the clip fully into the groove around the piston pin bore. Check that the clip sits evenly and flat in the groove — an incompletely seated clip may pop out. Work on a clean surface and cover openings to the crankcase to prevent clips from falling in. Do not use clips that are bent or damaged.

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, EARLY GPW, GPW, CJ2A, CJ3A, M38, M38A1
ALL_CATEGORIES : Connecting Rods & Hardware Willys MB Ford GPW M201, Piston,Rings & Bearings CJ2A, CONNECTING RODS & HARDWARE CJ3A, Piston,Rings & Bearings M38, CONNECTING RODS & HARDWARE M38, CONNECTING RODS & HARDWARE CJ3B

This part fits:

ModelYears
Military jeeps
Willys MB (early)1941, 1942
Willys MB1942, 1943, 1944, 1945
Ford GPW (early)1942
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

📐 Diagrams & technical drawings

From the original Technical Manual CJ2A_PL_1949 — Parts List — only for Willys CJ-2A / CJ-3A (1949)

Group 10-05 — Connecting Rods and Bearings
Group 10-05 — Connecting Rods and Bearings
Page 22–22

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