This heater blower fan motor final stage resistor is designed for use in select models including E46, E39, E83, E53, 3 Series, 5 Series, X3, X5, and M5.It supports proper HVAC system function by regulating blower fan speed.Specifications: OE Numbers: 64116923204, 64116929540 Dimensions: 10 cm x 5 cm x 6 cm Material: Composite Weight: 0.3 kg Compatible with: - 528i (1997–2000) - 540i (1997–2003) - 323i (1999–2000) - 328i (1999–2000) - 323Ci (2000) - 328Ci (2000) - M5 (2000–2003) - X5 (2000–2006) - 530i (2001–2003) - 325Ci (2001–2005) - 325i (2001–2005) - 325xi (2001–2005) - 330Ci (2001–2005) - 330i (2001–2005) - 330xi (2001–2005) - 525i (2001–2005) - X3 (2004) Package Includes: 1 x Heater Blower Fan Motor Final Stage Resistor