Performance valve springs for BMW 4 cylinder diesel engines. This set fits:

• BMW 318d, 320d (E46, E90 years 1998 - 2007)
• BMW 118d, 120d (E87 years 2004 - 2007)
• Other BMW cars with M47 series diesel engines
  

Valve springs have about 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. For stock camshafts only.