Ivo Rigter Sr.
Founder & Co Owner of BAIV and Tracksandtrade
+31 6 518 22 502 ivosr.rigter@tracksandtrade.com1970 Continental AOSi-895-5M engine (e.g. Walker Bulldog)
An exceptional chance to obtain the impressive Continental AOSi-895-5M engine; the supercharged, fuel-injected powerhouse that powered the M41 Walker Bulldog, M42 Duster, M44 Howitzer, and several other iconic post-war U.S. armored vehicles.
Location
Nederweert, The Netherlands
Year of construction
18 February 1970
Country of origin
United States of America
Manufacturer
Continental
Type
AOSi-895-5M
Condition
Reconditioned
Margin Goods
Yes margin goods;
No VAT applicable
€ 15.000,-
Incl. commission
Details
Condition
A rare opportunity to acquire the powerful Continental AOSi-895-5M engine — the supercharged and fuel-injected version as used in the M41 Walker Bulldog, M42 Duster, M44 Howitzer, and other post-war U.S. armored vehicles.
This particular engine was professionally overhauled by the Red River Army Depot (RRAD) in July 1985, ensuring top military-grade workmanship and reliability.
Specifications include:
Bore: Standard
Main and Rod Bearings: 0.010” undersize
Engines of this type and condition are increasingly hard to find, making this an exceptional chance to obtain a fully overhauled, ready-to-use AOSi-895-5M for restoration, display, or collection purposes.
Technical details
- Manufacturer
- Continental Motors Corporation
- Model
- AOSi‑895‑5M (air-cooled, supercharged, fuel-injected)
- Manufacturing date
- 18 February 1970
- Serial number
- 1229
- Length
- 47.43 in (120.5 cm)
- Width
- 51.56 in (131.0 cm)
- Height
- 34.81 in (88.4 cm)
- Weight
- approx. 1.700 lb (770 kg)
- Fuel
- Gasoline
- Cylinders
- 6-cylinder, horizontally-opposed (boxer) layout
- Capacity
- 895.9 cu in (14.7 L)
- Power output
- Gross up to around 500 hp
History
The Continental AOSi-895-5M represents one of the most advanced developments in the family of post-war American air-cooled tank engines. Designed and built by Continental Motors Corporation, this six-cylinder, horizontally opposed, supercharged and fuel-injected gasoline engine was developed in the early 1950s to power a new generation of lightweight armored vehicles for the U.S. Army.
Derived from the wartime AOI- and AOS-series engines used in vehicles such as the M18 Hellcat and M24 Chaffee, the AOSi-895 introduced significant improvements in power output, reliability, and efficiency. With a displacement of nearly 15 liters (895 cubic inches), it delivered up to 500 horsepower, making it one of the most powerful air-cooled engines of its class. The “i” in its designation refers to fuel injection, while the “S” denotes its supercharged configuration; a combination that gave it excellent throttle response and high performance in all climates.
The AOSi-895-5M was most notably fitted to the M41 Walker Bulldog light tank, the M42 Duster self-propelled anti-aircraft gun, and the M44 self-propelled howitzer. These vehicles were used extensively by U.S. and allied forces throughout the Cold War, and many remained in service well into the 1980s.
Engines of this type were overhauled at major U.S. depots such as Red River Army Depot (RRAD), ensuring military-grade rebuild standards.
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