FRAME MB

MB
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SKU:  WOA1142

WOA1142

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War Dept specs from the original Technical Manual — click to open

Complete Chassis Willys MB

Reproduction frame with round front crossmember

Complete replacement chassis for the Willys MB (1941-1945). Precision-manufactured to original specifications, with characteristic round front crossmember, Willys-type pintle bracket and shock absorber mountings. Suitable for complete frame-off restorations.

Type

Willys MB chassis

Construction

Precision stamped and welded

Wheelbase

80 inches (2032 mm)

Features

Round front crossmember, original mounting points

Features

  • Complete chassis to original MB specifications
  • Round front crossmember below radiator (Willys feature)
  • Original dimensions: 122 3/4" length, wheelbase 80"
  • Pre-drilled mounting points for body and suspension
  • Includes Willys-type pintle bracket and shock absorber mountings

★ Modern reproduction with precision welding for optimal fit. A solid foundation for any authentic Willys MB restoration.

Application

Suitable for Willys MB (1941-1945). The MB chassis has a characteristic round (tubular) front crossmember below the radiator, unlike the Ford GPW chassis which has a square, inverted U-shaped crossmember. Both types are mechanically compatible with MB and GPW bodies and components, but this frame follows the original Willys construction.

Installation notes

This is a bare chassis — body, engine, transmission, axles and suspension are not included. During assembly, check that all mounting points correspond with your body type (early/late MB, ACM Type 1/Type 2, or composite body). Willys MB chassis were originally welded; modern reproductions often use robotic welding for better consistency. Applying primer and paint before assembly is strongly recommended.

Compatibility

Willys MB chassis is recognisable by: round front crossmember (tube), open interior of frame rails, serial number plate on inside of left frame rail behind bumper. Ford GPW chassis has: square (inverted U) front crossmember, closed ('boxed') interior with lightening holes, serial number stamped on top of left frame rail in engine bay. Despite these differences, all MB/GPW parts are mechanically interchangeable.

Historical context

The Willys MB was produced from November 1941 to September 1945, with a total of 361,339 units. The chassis formed the backbone of the most-produced military vehicle of WWII and was designed to absorb part of the shocks through flexibility, in addition to the springs and shock absorbers.

This description was generated automatically. Unsure about fitment? Contact us at info@willys.be.

⚠ Spotted an error in this description? Report it to info@willys.be

Restoration part — not a ready-to-fit product

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.

COMPATIBLE_MODELS MB

This part fits:

ModelYears
Military jeeps
Willys MB1942, 1943, 1944, 1945