Zerostart 3500069 Engine Block Immersion Heater for Ford, Lincoln, Mercury, International/Navistar, John Deere, 27mm Thread | CSA Approved | 120 Volts | 1000 Watts

Was just as it states it is

functions correctly

My only complaint to this product is that it has no protection on the plug when not in use, so it's getting all the salt and water spraying on it while driving down the road, it doesn't heat the block as much as I would've liked, however, its not a major issue b/c it does keep it right around 80-90 degrees in the teens and allows the truck to start with less smoke than a cold start, and since I keep it in the garage that's a must for me. Plus, the instant heat is nice!very quick and easy install, it took me about 2.5 hours to install it...and that's only because I had to search for my 1/2" extensions for about 2 of those hours!! Be prepared to lose about a 1/4 - 3/4 gallon coolant while changing. We got it really quick on the first try and we used about 1/2 gallon. I've had it installed all winter and still works like day one. PS: the heavier the extension cord, the better it works....so if it doesn't work as well as it should, you probably need a bigger gauge extension cord. with my heavy-duty cord I'm getting around 90 degrees on a 10-20 degree day.

Easy to install...took only minutes...lost less then a pint of fluid doing the transfer of the element.

Good price vs own. The cord has a 90 and one was straight but it installed okay.

Product works great. Been a month so far and still heats the block.

Works great

The product met my expectations. In the end (because I didn't want to drain the radiator fluid), I had it installed by my local shop. The only design issue I have is that the plug is exposed and does not have a replaceable cap to put over the plug when not in use.

Worked real good for most of the first winter, but has stopped working already, didn’t even make it through an entire year

Have had it for 1.5 months and all good. Perfect for my 6.0. The plug at the heater is a 90 and would be better if it was straight. But works fine