A graphite impeller within the vacuum pump may fail, leading to vehicle performance issues. Water ingress can affect the pump's operation, and over time, the impeller on the motor spindle may break or become damaged. A damaged impeller can result in reduced air pressure or vacuum, impairing the pump's functionality. This may also cause the motor to seize, potentially leading to a blown 20A fuse and pump shutdown.Compatible with motor part number: 1397220291 Pump part numbers: A2308000648, A2308000548, A2308000448, A220800348, A2208000648, A2208000748, A2208000548, A2208000848, A2208001148, A2208001248, A2208000948 Fitment: For SL-Class (R230) 20012011 - 1st generation: 20012006 SL350, SL500, SL600, SL55AMG, SL65AMG - Facelift 1: 20062008 SL350, SL500, SL550, SL600, SL55AMG, SL65AMG - Facelift 2: 20082012 SL280, SL300, SL350, SL500, SL550, SL600, SL63AMG, SL65AMG For S-Class (W220) 19982005 S280, S320CDI, S320CDI L, S350, S350 L, S400CDI, S430, S430 L, S500, S500L, S500 4-, S600L, S55, S55 L For CL-Class (C215) 19992006 CL500, CL600, CL55AMG, CL63AMG, CL65AMG Material: ABS Color: Black Package Contents: 1 x Motor Impeller Note: The package includes only the items listed above. Other products are not included. Due to lighting and display differences, the color in the image may vary slightly from the actual product. Measurement may vary by +/- 13 cm.