BMW Performance Valve Springs - N57 N47 B57 B47 B37 diesel engines. The set prevents valve float under high boost pressures due to springs greater stiffness compared to the OEM springs ( +55% ) N 57 has really weak springs from factory.
Ferrea Valve Springs - BMW E60/E82/E91/E92 3.0L - DOHC 24 VALVE (N54)
BMW dual valve springs with retainers M52 M54 (M50 Vanos) NJPerformance
DBilas valve springs + spring plates for BMW 330, 530 6 cyl. M54 Double Vanos
Valve springs inner for BMW E-31 E-32 E-34 E-38
M62 BMW dual valve springs with retainers - NJPerformance
DBilas valve springs + spring plates for BMW 320 325 328 6 cyl. M52DV Double Vanos
