Genuine BMW Spark Plugs 12122455258
OE plugs in the B58TU engine found in the Z4 and Supra A90.
These plugs are also used to reduce ignition timing corrections on tuned 1st gen B58 engines.
We can also regap these plugs if required before posting.
Other B58 engines
Upgrade for tuned M140i M240i 340i 440i etc
OEM p/n 12122455258