Military Jeeps: MA, MB, and GPW - - Jeep at Off-Road.com
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Military Jeeps: MA, MB, and GPW

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Description

The MA was the prototype that won Willys the contract with the U.S. Government. Willys built approximately 1550 of them in 1941. From late 1941 until mid 1945, Willys built MBs and Ford built GPWs based on the Willys design.

The first 25,808 MBs produced by Willys used a "slat grill". This grill was welded together rather than the stamped grill most people are familiar with. Very few "slat grill" MBs remain in existence.

 

Willys-Overland MB back view

Drive Train

The MA, MB, and GPW used the "Go Devil" L-head 134 I4 engine, T-84 3 Speed manual transmission, Dana 18 two speed transfer case, Dana 25 front axle, and Dana 23-2 rear axle.

Production Information

MA

YearSerial Number RangeProduction
194178401 - 799001500 
194185501 - 8555050 

MB

YearSerial Number RangeProduction
1941100001 - 1085988598 
1942108599 - 20002291424 
1943200023 - 29323293210 
1944293233 - 402334109102 
1945402335 - 45985157517 

GPW

YearSerial Number RangeProduction
1942-? 
1943-? 
1944-? 
1945-? 

Serial numbers are located on the left front of the frame and on the back of the bumper. The engine number was located at the front of the engine block on the water pump boss.

Contributor

Thanks to Charlie Weaver for sending me the MA and MB serial numbers.

 

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