War Issue WD 1941 WD BSA M21 engine cases with matching case halves

War Issue WD 1941 WD BSA M21 engine cases with matching case halves


War Issue WD 1941 WD BSA M21 engine cases with matching case halves.

The engine cases are in decent condition. They are now 80 years old, so expect a few marks! The important bits are:

  • Engine case halves have matching number stamps.
  • The engine is stamped with W M21 1941. According to my lists, the 600cc M21 was supplied in 1939 and 1940 as civilian bikes. I think the WD mainly used the 500cc M20.
  • This set of cases were one of 212 ordered by the War Department in 1940, with contract number C7370. (Thanks Ron for this detail)

Just above one of the casing stamps, there appears to be a number, 66-1180 (or 86-1180). It take this to be the BSA part number as the number on the inside of one casing is 66-1602.

So, if you’re after a genuine set of BSA M21 engine cases with the War Department “W” stamp, then here’s your chance.

International shipping available.

Viewing: Please come and check it over before you buy. It is at PE28, near St Ives in Cambridgeshire.

Shipping: I usually ship to most destinations. If you don’t see a price, please ask. Thanks. International shipping available.

Collection: If you don’t want it shipped, I have plenty of space. If you can’t collect for a while, it’s not a problem. However, I will need to be paid very soon after the sale. Thanks.

Payment: Good old fashioned money on collection is preferred. I can accept payment through PayPal or by bank transfer as well.

Import Taxes: Please note that IMPORT DUTIES are not something I can control. If you are buying from outside the UK, there is a chance that you will have to pay import taxes. Import taxes vary from country to country. If there are charges to pay, it is the buyer’s responsibility to research the cost and pay the duties. The price that you see on my advert is for the item and not the item plus whatever taxes might be due.


ref: 23-3-DIR-73

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