Performance valve springs for BMW 4 cylinder diesel engines. Fits to:
- BMW 318d ; 320d (E46; E90 years 1998 - 2007)
- BMW 118d ; 120d (E87 years 2004 - 2007)
- Other BMW cars with M47 ; M47N and M47N2 diesel engines
Valve springs have 30% more valve seat pressure than stock BMW springs. They very effectively solve valve float problem when putting high boost to these engines but do not damage the engine or camshafts. Allows to run boost levels up to 4.0 bar.
For stock camshafts only.