I ordered this to replace the PTO switch on my Craftsman DGS 6500, a 26 HP tractor made by Husquvarna. The part was a drop in fit and works just fine. The knob is black as opposed to red, but the price is about half the price of an OEM replacement. Update... Unit failed after 6 months. I took it apart and the contacts are thin and cheaply made. Considering that my original switch lasted 12 years, I would not recommend this one.