* Applicable: bmw n51/n52/n53/n54
    engines
* Applicable models：
    128i.e82(07-08),
    130i. E81/e87 (05-08),
    135is.e82(07-08),
    323i.e90/91/92/93(04-08),
    325i/xi. E90/91/92/93 (04-08),
    330i/xi.e90/91/92/93(04-08),
    335i/xi.e90/91/92/93(04-08),
    523i/li.e60/61(04-08),
    x3 2.5/3.0.e83(06-08),
    525i/li/xi. E60/61(06-08),
    630i.e60/61(04-08),
    528i/li/xi.e60/61(06-08),
    530i/li/xi.e60/61(05-08),
    535i/xi.e63/64(04-08),
    730i/li.e65/66(04-08),
    x5 3.0.e70(06-08),
    z4 2.5/3.0.e85/86(05-08).
    e90/91/92/93(04-08), 328i/xi.
* Special design to locate camshaft
    in tdc position