The lavor would be the "closest" fit, but still a little too wide. I followed AG's suggestion to buy a new Karcher Gun, and exchange for a Karcker K-Series fitting.
I ended up buying this kit and gonna call AG today to exchange for a Karcher K-Series fitting.
Karcher 2.642-182.0 - Replacement Trigger Gun Set w/ 25' Hose (Electric Only)
Since we have the same washer, what was your remedy???
I have the same PW and ordered a Foam Cannon w/ the Lavor fitting, it is too thick and does not insert deep enough into the gun to twist and lock. Shopping around for a new spray gun as advised by AG...