4×4S.ORGTHE REGISTRY NAMED MODEL · 1964–68
NAMED MODELMilitary · USUnited States

M151A1.

The first revision of the MUTT, 1964–68: suspension and body changes, a modified rear axle geometry, turn signals and a redesigned fuel system, otherwise the swing-axle M151 that served in Vietnam.

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Sources & evidence
M151A1 — Oorlogsmuseum Overloon (War Museum Overloon)Rutger van der Maar · CC BY 2.0 ↗
BASE VEHICLEM151 MUTTBUILT BYKaiser Jeep Corporation, Ford Motor Company, AM GeneralIN SERVICE1964–68OPERATED INUnited StatesPRODUCTIONPart of more than 100,000 M151sLAYOUT4 wheels · 85″

The record

The M151A1 answered the early rollover and durability complaints with detail changes but kept the swing-axle rear; it was the Vietnam-era Jeep and the basis of the M718 ambulance and the M151A1C with the 106 mm recoilless rifle.

Specification

MANUFACTURED1964–68
ENGINE2.3-litre Ford four, 71 hp
PRODUCTION RUNPart of more than 100,000 M151s
COUNTRY OF ORIGINUnited States
OPERATED INUnited States
STATUSout of production
RECORD KINDNamed model
MODEL LINEM151 MUTT
FAMILYM151 MUTT
WHEELS4
NOMINAL WHEELBASE85″
CATEGORYMilitary · US

Catalogue fields describe the vehicle's structure and body as this registry records it. They are not certified factory measurements, and no performance figures are published here.

Variants & colours

Base model variants

AI rendering impression

An AI rendering impression starts from a 3D model of this vehicle, which an image model then paints into a scene. It is an artist's impression of the type, made to give a feel for the vehicle in its element — not a photograph, and not a record of any particular vehicle.

Proportions, fittings, markings, colours and the setting can all drift from the original in the process. For the vehicle's actual details, rely on the specification, the photographs and the cited sources on this page.

Sources

  1. 1M151 ¼-ton 4×4 utility truck ↗Wikipedia · accessed 2026-09-22SOURCE

Registry record updated 2026-09-22 · status: researched