Compatible Vehicle - for Rolls-Royce Phantom 6.7L 2004-2010,for Z8 4.8L 2003,for Z4 3.2L 2006-2009,for Z4 3.0L 2003-2005,for Z4 2.5L 2003-2006,for Z3 3.2L 2001-2002,for X5 4.8L 2004-2009,for 750Li 4.8L 2006-2009,for 750i 4.8L 2006-2009,for 650i 4.8L 2006-2010,for 650Ci 4.8L 2006-2010,for 550i 4.8L 2006-2010,for 545i 4.4L 2004-2006,for 525i 2.5L 2003-2006,for 330xi 330i 3.0L 2003-2005,for 330Ci 3.0L 2003-2006,for 325xi 325Ci 2.5L 2001-2005,for 120i 2.0L 2005-2007. Replaces OEM Part Numbers - 121317551260 12131712219 12131712223 12137594938; 0221504464 0221504470; 0040100324 ZS324; 20110 20360; GN10210 GN10210-12B1; DMB877; 12758 CU1171 IIS063 UF522 UF-522. Premium Quality Material - You'll have an easy time mounting these coils due to their lightweight and winding construction. The copper material ensures maximum power delivery to the spark plugs. They come pre-greased for direct replacement.Superior winding process yields greater wire length control, which means less chance of a breakdown of the wire coating and insulation. Material resists pinholes and cracks that can cause failures.. Function & OEM Fit - OCPTY Ignition Coils are engineered for original equipment and replacement applications.Every component either matches or improves on the OE design to ensure fast and easy installation with superior performance and reliability.The ignition coil acts like a transformer.the ignition coil transforms the electrical energy from the vehicle battery into high voltage, saves it briefly and then emits it as a high voltage current pulse to the spark plug..
