BMW 6-Cyl. 320 - 328i / 520 - 528i E36 / E46 / E38 24V (M52) Singlevanos
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Single spring
No. or springs: 24
No. or upper spring retainers: 24
No. or lower retainers inlet: Standard
No. or lower retainers outlet: Standard
Installed high: 37
Valve lift: 12
Hardness bp: 78
Mill down spring bearing is not necessary