JAWA CZ parts numbering - JAWA CZ Owners Club

When you need a spare part for your bike, it can often prove to be quite a difficult task to get the correct one. With new Jawa’s not available here in the UK, the old dealer network has collapsed, which now means that any spares we require are usually obtained by mail order. In the UK Mick Berrill’s is the primary source of new spares and Pauline who looks after the Jawa spares side has a vast wealth of knowledge regarding parts for the various models, but if you know the part number quoted in the spares manual then life can be so much easier not only for her but also for yourself. Pete Edwards has some spare parts catalogues with part numbers in, and the Club Librarian Arthur Fleming can usually provide a copy of the parts list for your particular model (for a small cost).

MZ-B in Berlin have probably become that largest mail-order company for old Jawa and CZ parts, and I know that they send parcels all over the world. The information below regarding how Jawa-CZ parts originate has been taken from their website, and I thank them for letting me use it.

JAWA have used since the beginning of the 1950's a unified system for parts numbering. This is as follows:-

3 digits show type.

2 digits show parts group.

3 digits name part.

e.g. 353 51 353 brake drum front.

As not all parts are changed when there was a model change, bikes of a later model may well use the same parts as earlier models. A JAWA 640, produced in 2001 has for example a part 151 22 021 (a securing washer). This parts has not been changed since Perak models, produced in 1945. It also happens that some parts show types of motorcycle which never actually reached production. It could be that the type of engine or parts developed was for a model which was never produced, but which were later used on other models. As JAWA started production of the first Perak immediately after the war, standardization of parts between models was a keyword. It even influenced numbering. However it soon showed that these numbers were too short to encompass all types, so the system was changed. This change was however as shown below.

(e.g.) Perak type 11 became type 151, type 18 became 158 and type 12 became (for whatever reason 150). The 4 stroke type 15 was renamed 155.

Example: the piston ring for Perak is in the old catalogue part 101215. This was changed in the 1950's to 150 12 015. This number is the one still used today.

So it’s quite easy to see why occasionally when just asking for a certain engine capacity part, that the wrong part version could be delivered to you. So wherever possible, get to know the part numbers for your particular model. It could save you a lot of frustration. Source Swindon Smoke Signals

(I hate to spoil this for readers but some identical parts have different numbers).

By Pete Edwards

<< Back to Technical Advice page

Last Updated: 17 June 2008 - Privacy Policy - Terms & Conditions - Email Us