CARBURATOR CARTER WO JEEP MB/GPW NEW
x2 3/8” UNF Nuts for fitting to engine block (225831)
x2 3/8” Washer for fitting to engine block
x1 90° Fuel Union (137422)
x1 Carter Float Level Adjustment Tool (T109-80)
x1 Cater Metering Rod Adjustment Tool (T109-26)
x1 Throttle Cable Trunnion and Screw (GPW-11495 WO-A8834)
x1 Carter Data Sheet
Carter
Carter WO WWII carburettor – new production
Complete with setting tools and fitting hardware
Newly manufactured Carter WO carburettor to WWII 539S specification for the Willys L-134 'Go Devil' engine. This downdraught carburettor combines a float chamber, nozzle tube, accelerator pump and economizer valve for a precise fuel-air mixture at all engine speeds. Supplied with float and metering rod setting tools, mounting nuts and fuel union.
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Type Downdraught, plain-tube with accelerator pump |
Stud spacing 2-3/8" (60 mm) centre-to-centre |
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Supply Complete with setting tools and fitting parts |
Vehicle application As per product categories |
Features
- Carter WO design conforming to original 539S specification
- Fitted with all original WO markings and patent numbers
- Includes Carter T109-80 float height setting tool
- Includes Carter T109-26 metering rod setting tool
- Complete with 2× 3/8" UNF nuts, washers, 90° fuel union and throttle cable trunnion
- Supplied with Carter Data Sheet containing adjustment instructions
★ Accurate reproduction of the original Carter WO carburettor, complete with professional setting tools. Ready to fit, only fine adjustment of idle speed and mixture screw required.
Application
Developed for the Willys L-134 'Go Devil' L-head engine. Stud spacing: 2-3/8" (60 mm) centre-to-centre. Throttle bore: 30 mm. Fits inlet manifolds with 3/8"-24 threaded studs. Note: For M38, modification of the air intake system is required (M38 uses Carter YS-637S with offset head as standard).
Installation notes
Before fitting, check that the float height is correctly set (3/8" / 9.5 mm) using the supplied T109-80 gauge. Ensure new gaskets are fitted between carburettor and manifold. Tighten mounting nuts evenly. After fitting: open idle mixture screw 1 to 2 turns from fully closed (do not force tight). Fine tuning with warm engine: idle speed 600 rpm (vehicle speed ± 13 km/h). Engine must be correctly ignited (spark plugs, points, ignition) — a new carburettor will not resolve other engine problems.
Compatibility
Carter WO (also known as Carter Model W-O) was used in WWII on Willys MB and Ford GPW. An identical carburettor (sometimes with very minor differences in patent marking or linkage details) was also used on early civilian jeeps. The differences between WWII 539S and post-war versions (636S, 698S) are minimal and do not affect operation. Note: M38 used the Carter YS-637S with offset head as standard; a Carter WO will only fit with a modified air intake system.
Historical context
The Carter WO was the standard carburettor on the Willys MB and Ford GPW WWII jeeps fitted with the L-134 'Go Devil' engine. Carter produced the 539S model during the war; after 1945 slightly modified variants followed such as the 636S and 698S (circa 1947-1954) with additional patent numbers on the float bowl, but with identical operation and dimensions.
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 : Carter - CJ2A, Carter - CJ3A, Carter M38, Carter - CJ3B
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| Willys MB (early) | 1941, 1942 |
| Willys MB | 1942, 1943, 1944, 1945 |
| Ford GPW (early) | 1942 |
| Ford GPW | 1942, 1943, 1944, 1945 |
| Willys M38 | 1950, 1951, 1952 |
| 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)
