What do the Engine
Casting Numbers Tell?
Basic information about your jeep...

Because the 134 cu. in.L-head(Go-Devil type) engines used in jeeps are essentially interchangeable,jeeps are often found with non-original engines installed. The castingnumbers on an engine or block can be used to help determine what engineyour vehicle has. The casting numbers are part of theenginecasting and are not stamped onto the metal of the block like a serialnumber.(See serialnumber page). Generally, the block casting numbers are foundon the right side of the engine block below the distributor. The blockcasting numbers are raised-not stamped. The head casting numbers arenormallyon the topof the head in the right front corner. Head casting numbers areeitherraised or recessed, but not stamped.
It is helpful to know thecastingnumber needed when searching for correct replacement blocks or headsforyour MB or GPW.

Jeep Liberty

Note: This table is underconstructionand may contain errors -(Ren Bernier, 12/9/02)
(Information contributed by JoePotter, Alisdair Brass, Jon Rogers, Mark Tombleson, Jim Kilborn, FredColdwelland others.)

Vehicle	Block#	Head#	Images of CastingNos.
MB 1941-45	638632	639660
GPW 1942-45	GPW 6015	6050
CJ2A 1946-49	641087 (Very earlyblocks - 638632)	640161	CJ2A Engine CJ2AHead
CJ3A 1950-53	641087	640161	CJ3A Engine CJ3A Head
M38 1950-52	641087 through s/n MC74419 804380 after s/n MC74419	800376

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Decode VIN number information on the following makes and models:Jeep Cherokee, Jeep Comanche, Jeep Commander, Jeep Compass, Jeep Grand Cherokee, Jeep Grand Cherokee SRT-8, Jeep Grand Wagoneer, Jeep Liberty, Jeep Patriot, Jeep Scrambler, Jeep Wagoneer, Jeep Wrangler.
The Vehicle Identification Number. Home Technical & Info Jeep Vehicles VIN Reference Guide. Click on your Jeep model below for VIN details.

2002 Jeep Liberty Engine For Sale

1970 Jeep Serial Number

VIN Decoder Using this tool you can decode your 1972 - present Jeep VIN (Vehicle Identification Number) and find out interesting information, such as the year built, engine size, extra options and more.

Jeep Liberty Engine Serial Number