This hose is compatible with the following 2011/12 models: K 2.050, K 2.150, K 2.20, K 2.26 M, K 2.27, K 2.38 M CCK, K 2.350, K 2.360 CCK and most legacy models produced in 2007-2010. This unit is NOT COMPATIBLE WITH QUICK CONNECT MODELS, HOSE REEL MODELS OR 2013 MODELS. Even though the package states "Extension/Replacement Hose" this unit can ONLY be used as a replacement hose on older gas pressure washers, up to 2500 PSI Karcher Pressure Washer 25-Foot Extension/Replacement Hose #2.640-850.0: * Combine to extend an existing hose * Replace a worn-out hose * Max 2500 PSI * Measures 25" long