STICKER AC AIR FILTER
AUTO004
AC 'Pancake' Type Air Filter
Early type for Slat Grille
Reproduction of the early AC Spark Plug Co. Model A-183-40 'pancake' air filter as used on the first Willys MB and Ford GPW jeeps. This flat oil bath air filter was characteristic of the earliest production and was later replaced by the Oakes type.
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Type Pancake oliebaad-filter |
Production period 1941 - Maart 1942 |
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Original model number AC A-183-40 |
Mounting Op carburateur met speciale air horn |
Features
- Suitable for earliest Willys MB (serial numbers up to approx. 309) and early Ford GPW
- Flat 'pancake' design characteristic of early production
- Originally manufactured by AC Spark Plug Company
- Air intake at rear, oil bath filter system
- Requires specific early-type air horn and crossover tube
- Ford versions were marked with script 'F'
- Replaced by Oakes Model 613313 from mid-1942
★ This rare early-type air filter is essential for a correct restoration of Slat Grille Willys MB jeeps and the very first Ford GPW production. The pancake version was only produced for a few months before the transition to the Oakes type.
Application
Exclusively for Willys MB Slat Grille jeeps (serial numbers approx. 001 to 124,309, production November 1941 to March 1942) and very early Ford GPW. Not compatible with later MB/GPW with standard grille or later M201.
Installation notes
Mounting requires specific early-type air horn (WO-A-1224) and pancake crossover tube with raised standoff. Note: the air intake is located at the rear of the filter. Check compatibility with early carburettor version. Use engine oil (20W50) as oil bath medium.
Compatibility
ONLY suitable for earliest production with pancake air cleaner. NOT compatible with Oakes-type air filters (1942-1945) or later productions. Early Ford GPW filters are often marked with 'F' script. Requires early-type mounting brackets and special crossover tube – standard mid/late brackets do not fit.
Historical context
The AC Spark Plug Co. pancake air filter was common to both the first Willys and Ford jeeps and was also used on Dodge and GMC vehicles from that period. Due to rubber conservation during the war and the introduction of more efficient filter systems, this type was soon replaced by the Oakes 613313 model.
This description was generated automatically. Unsure about fitment? Contact us at 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.
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| Willys MB (early) | 1941, 1942 |
| Willys MB | 1942, 1943, 1944, 1945 |