Review on Zerostart 3600012 120-Volt Plug Protector, Black, 120V by Robert Larris

I use this plug cap with a Kats heater block. I was a bit disappointed at first because this thing doesn't cover the whole fork. It just snaps into place at the very end of the connector where the 3 pins are. But after a month of use it's working great, no complaints. The plug for my cylinder block heater comes out the underside of my car's grille so it dangles in the wind as I drive 65mph down the road every day (see my picture). This little lid fits tight enough to NEVER come off. But it is also very easy to install/remove. I'm happy with that.