Zerostart 3500043 Engine Block Heater for Ford, Mercury, Lincoln, International, Caterpillar, Detroit Diesel, Hino, Mack, Nissan, 3/4" NPT Thread | CSA Approved | 120 Volts | 1000 Watts

Good replacement part..

Replaced my original factory block heater and cable since I just bought this truck and didn't want to run the original equipment through The winter. I've used this down to 13° so far. It does what it's supposed to keeps the block warm enough to eliminate any hard starting. Not warm enough to completely heat your coolant, but if it's not super windy or very very cold when you start your truck, with this plugged in, you'll see your coolant temp just above the cold line.In about 4 hours this thing reaches its Max heating ability so no need to have plugged in longer. Although I have left it plugged in overnight with zero issues. Would recommend this as a good alternative to the expensive factory option which is about double the cost of this one.

Put it on my 1994 power stroke works great

Does not come with any type of thread sealant. However it installs easily enough on the 7.3 Powerstroke. Has just enough cord to reach the front of the truck. Time will tell its true effectiveness come wintertime. So far so good though.

I got half way thru the winter when my block heater decided it no long wanted to live. So I replaced with the one and was back up and running. Works great and way cheaper than the ones on the diesel websites. Also super easy to install. If you even worry about your not work just go ahead and replace it before you’re doing in the cold not a fun time

Easy install and worked great for freezing temps of 2024 in the deep south.

Even on the coldest of mornings that diesel starts on the first try

worked for 3 weeks. .. only on for 6 hours a day.... then charged me a restocking fee ..