Military Jeep - Willys M38A1

(1952-1971)

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.

 

The following information comes from the Department of the Army Technical Manual TM9-8014 dated April 1955.

TRUCK, UTILITY: 1/4 TON, 4 x 4
M38A1
AND
TRUCK, AMBULANCE: FRONT LINE
1/4 TON, 4 X 4, M170

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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Technical Specifications

 

Capacities

Cooling System
11 1/2 qt

Crankcase (refill)
4 1/2 qt

Differential (each)
2 1/2 qt

Fuel Tank (M38A1)
17 gal

Transmission
1 qt

Transfer
3 pt

Crew

Operating
1

Cylinders
4

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
9-5/16”

Tire Size
7.00 x 16

Tire Pressure
28 psi

Tread (Front) & (Rear)
49-1/8”

Transmission
T-90

Transfer Case
Dana 18

Front Axle
Dana 25 (1952-1960) or Dana 27 (1961-1971)

Rear Axle
Dana 44

Wheelbase
81”

Fuel Capacity
17 Gal

Other
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
4

Cu-In. Displacement
134.2 cu. in. (2199,53 cm 3)

Horsepower
72@4000 rpm

Torque
114 lb-ft. (15,7 kg-m.)

Compression Ratio
6.9 to 1

Valvetrain
F-Head