Willys M38A1

Produciton year 1953

The Willys M38A1, or MD, was a four-wheel drive utility vehicle made by Willys from 1952 to 1971. It was widely procured by the U.S. military from 1952 until 1957, after which it was purchased by the U.S. Marine Corps and exported to foreign governments until the end of production in 1971.

The M38A1 was the first vehicle to feature the round fender design that would later become the distinguishing body style of the CJ-5  (part of the Universal CJ series).

Produced first in 1952, following the retirement of the M38 model, the M38-A1 was re-designed as an “stand-alone” improvement, featuring round front fenders, a contoured hood, a two-piece windshield, top mounted windshield wipers, and powered by the new “Hurricane” F-Head engine and Warner T90 transmission.

The M38A1 (referred to by Willys as the “MD”), like the M38, had a frame and suspension that was much stronger than its civilian sibling, the CJ-5.

Advances in early 20th-century technology resulted in widespread mechanisation of the military during World War I. The United States Army deployed four-wheel drive trucks in that war, supplied by Four Wheel Drive Auto Company (FWD) and the Thomas B. Jeffery Company.

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Interesting Facts

Bring the old girl back to life with quality Willys Military Jeep Parts from Midwest Jeep Willys. We proudly support our troops and are proud to have parts to keep these Vintage Military Vehicles on the road. Parts for Willys MB, Ford GPW, M38, M38A1 & M151 Military Jeeps.

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In general, the prescribed organizational maintenance responsibilities will apply as reflected in the allocation of tools and spare parts in the appropriate columns of the current ORD 7 supply manual pertaining to this vehicle and in accordance with the extent of disassembly prescribed in this manual for the purpose of cleaning, lubricating, or replacing authorized spare parts.

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Perfect Quality

  • Technical officiency 95% 95%
  • Consumption level 45% 45%
  • Full documentation 91% 91%
  • New original parts 99% 99%
  • Activity during the war 33% 33%
  • Availability on the market 3% 3%

Technical Specifications

Cooling System
11 1/2 qt
Crankcase (refill)
4 1/2 qt
Differential (each)
2 1/2 qt
Fuel Tank (M38A1)
17 gal
1 qt
Dimensions (M38A1)
Height, overall maximum
73 3/4”
Height, lowest operable
56 1/2”
Length, overall, maximum
138 5/8”
Width, overall maximum
60 7/8”
Ground Clearance minimum
Tire Size
7.00 x 16
Tire Pressure
28 psi
Tread (Front) & (Rear)
Transfer Case
Dana 18
Front Axle
Dana 25 (1952-1960) or Dana 27 (1961-1971)
Rear Axle
Dana 44
Fuel Capacity
17 Gal
2-Piece Windshield, 24 Volt Electrical
Engine Type
4-134 F Head Motor (475)
(All Years)
Engine Type
134 CID (2.2L) F4-134 Hurricane 14
Number of Cylinders
Cu-In. Displacement
134.2 cu. in. (2199,53 cm 3)
72@4000 rpm
114 lb-ft. (15,7 kg-m.)
Compression Ratio
6.9 to 1