Throttle body adapter plate for M52TU to M54B30 manifold conversion. Suitable for:

E46 - 323i, 328i;
E39 - 523i, 528i double vanos
Z3 - 2.8 double vanos

This adapter plate is needed to mount M52 double vanos throttle body on M54B30 intake manifold (from 3.0i double vanos engine 330i, 530i, X3, X5 years 2001-2005) . Comes with fitting hardware. This plate will not restrict air flow due to special design.

M54B30 manifold has much better flow than M52TU intake manifold due to larger intake runners and bigger DISA valve.
This manifold conversion will give 10-15 hp extra and a very strong top end as it lets the engine breathe much easier.

International postage (in business days):

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