Spec: Unit Type: Alternator, Voltage: 12, Rotation: CW, Amperage: 120, Clock: 1, Pulley Class: S6, Regulator: IR, Fan Type: IF Replaces OEM Numbers: ARROWHEAD: AVA0039, ARROWHEAD (OEM): V439298, J & N: 400-40090, LESTER: 13928, MERCEDES BENZ: 011-154-64-02, A011-154-64-02, REMY LIGHT DUTY: 12428, VALEO: SG12B023, VALEO NEW: 439298 Compatible With/Replacement For: CHRYSLER: CROSSFIRE 2004-2008, MERCEDES BENZ: C240 2001-2005, C32 AMG 2002-2004, C320 2001-2005, CLK320 2003-2005, ML350 2003-2005, SLK32 AMG 2002-2004, SLK320 2001-2004 1-year warranty protects you after your purchase. We're confident that our products will work flawlessly once installed in your vehicle. But in a rare case that it does not, we'll replace it anytime within one year of your order. If you have a problem, we will take every step to assist you, contact us for a replacement. 100% New aftermarket Alternator built to meet OEM specifications for Chrysler, Mercedes Benz