Hi Fred; yes, of course they do. See my post, "block heater update" under technical questions. Do a search; there is another long thread a while back. Anyway, it is a Honda part that costs about $50.00, and comes with everything needed. You have to drain the coolant, then unscrew a drain plug under the engine block. I used a little teflon tape, then screwed in the block heater element. It works just great. Billy...