How to identify engine size

UK forum for general and technical discussion about the Z3 roadster
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Joined: Fri 16 Jul, 2021 08:26
Posts: 5

  Z3 roadster 2.0

How to identify engine size

Post by oz2000z3 »

Hi all, I bought what I thought was a 2.2 litre Z3 from interstate (Australia) and upon looking up the VIN found it was 2.0 litre! Is there any other way of finding out the engine size which has the # 206S421369363? Thanks
Mike Fishwick
Joined: Fri 19 Jun, 2009 10:27
Posts: 2076

  Z3 roadster 2.8
Location: Daglan, France

Re: How to identify engine size

Post by Mike Fishwick »

In Europe at least, the 2.2 M54 engine uses an inlet manifold with 'figure of eight' shaped inlet branches, and catalytic converters mounted on the exhaust port ends of the headers.

The 2 litre M52tu models use a manifold with smaller circular inlets, and cats mounted in the exhaust pipes under the floor.

All the 2.2 engines I have seen which have air conditioning are not fitted with a viscous coupling-driven cooling fan, leaving the AC condensor fan to do the work.

The 2.2 is a 'Drive by wire' engine, so does not have a throttle cable.
A Z3 is not just for Christmas - it's for life!
Joined: Mon 12 Nov, 2018 17:47
Posts: 98

  Z3 roadster 2.8

Re: How to identify engine size

Post by LaRy »

This info maybe help you: ... ion-codes/
Anyway, the first 4 digits 206S stands for 2.0 litre, 6 cylinder, 4 valve,
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