Serial numbers

Discussion, suggestions and issues regarding the G503 WWII jeep Serial Number Database application and interface.
Post Reply
G-Private First Class
G-Private First Class
Posts: 10
Joined: Thu May 05, 2016 4:51 pm
Location: St. Charles Illinois

Serial numbers

Post by Beek1944 » Fri May 12, 2023 4:55 pm

I'm hoping that someone can help this novice identify my jeep engine, because I have received conflicting statements and my research has left me even more confused. My 1943 MB has a Chassis number of MB24653. Where the confusion lies is the Head 639660 and the engine block 11-26 638632 W4A NI OR-2. Is this a WWII engine? Would be most grateful for any assistance and information.

User avatar
Posts: 11354
Joined: Mon Jul 25, 2011 3:41 pm
Location: Iowa

Re: Serial numbers

Post by dpcd67 » Fri May 12, 2023 8:15 pm

You are mixing serial numbers and part numbers; that part number was used on CJs too; and I don't have all the Nickel, Chromium (CR, not OR) and Copper suffixes memorized.
Just list the serial number of your block, which is on a pad on the left side, under the oil filter. That will tell you if your engine is original; they run ahead of vehicle serial numbers. Depending on month and year.
U. S. Army 28 years.
Armor Branch

Posts: 973
Joined: Thu Aug 17, 2017 11:39 am
Location: Somerset UK

Re: Serial numbers

Post by Scrumps » Sun May 28, 2023 1:18 pm

Hi Beek,

Two observations:-

1. Your MB frame number is one digit too short - all MB’s have six digit frame numbers.

2. The casting date of your block is Nov 26th however we need the engine serial number (on the machined face behind the oil filter) to work out a year.

If I work on the basis that your frame should be MB 24653x then your frame is late Jun ‘43 and the engine is not “date aligned” with the frame.

Dec '42 Willys MB
Aug ‘44 Willys MB
2021 New Defender 90 D250 HSE
2005 Landrover 90 CSW
2024 Range Rover Sport
1967 MGB
Royal Navy Weapons Engineer 1979-2007.

User avatar
G-Lieutenant General
G-Lieutenant General
Posts: 3908
Joined: Fri Aug 05, 2011 9:45 am
Location: near Namur, Belgium

Re: Serial numbers

Post by YLG80 » Mon May 29, 2023 2:10 am

That jeep was already registered in the G503 database since 2009 under the record # 4010

The serial number is MB246531.
A new registration would be nice to trace that jeep history from owner to owner :wink: .

MB 246526 with original data plate was dated from July 1st 1943. So as Scrumps advised, late June or early July 43 would be correct.,

Ford GPW 164794 1/4T 12-7-43 -  »Sweet Lou » for my wife!
ACM I body#198443
Restored as 1st Army 759th LT B21
ON6YD(ex YB1AUH) MVPA38444

Post Reply

Return to “”

Who is online

Users browsing this forum: No registered users and 3 guests