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Your cart is empty.A frost plug heater is an electric heater that heats the engine of a vehicle to give quicker starts and protects your engine from damage that can occur during cold weather starts. Warmed engines also deliver better fuel economy, plus improves oil flow to provide better lubrication to the engine, which reduces wear and increases engine life. The frost plug heater also cuts back on pollution as it aids in vaporization of fuel, thereby cutting back on emissions.
Nick
2025-08-17 17:19:47
Works as it should. Good Magnet
Steven Holbert
2025-08-05 17:44:18
This thing gets hot very quick
Theodore John
2025-05-06 17:32:45
I like it. It seems to work well. I am using it to keep the engine warm, or at least part of it, on my Harley. Prior to getting this, I couldn't get the bike started in the colder temperatures since the oil was like glue. I have the bike covered well, but it is outside but it's not a garage and it does get mighty cold out.The Heater does get hot, I will give it that. I nearly burned myself when accidentally grabbed it incorrectly. I know better now.Only 4 Stars: If there was one thing I could change about this heater, it would be to give it other methods of attaching to the bike. My Harley just doesn't have enough exposed flat metal surfaces anywhere on the engine that this thing can stick to. Oh sure, I could have just attached it to my beautiful gleaming chrome oil tank, but I don't want to scratch it. I did manage to find a.... space of sorts, to rest it on in the engine compartment where it would heat the engine block and oil sufficiently enough for the engine to start.Even after I put a shed in place for the bike I'm likely to continue to use this. Not a bad investment if you like to run your machine when it's cold.
Commercial Restaurant
2025-03-31 19:55:04
Worked really well placed under car on oil pan. Car started in 10 degrees like in the summer. Easy to attach/remove.
jon mceachron
2025-03-13 13:07:46
BUYER BEWARE! Don't trust these heaters.Bad bad bad bad! Two out of three units failed within a year - and two different failure modes! (This could have left me with an electrical fire - or two frozen engine blocks. Either choice is bad.)I bought three of these magnetic engine heaters (for the occasional cold snap here in Texas - when the vehicles are not weatherproofed).And - I found that two units have failed within a year! One failed to the point it caused sparks (110-VAC sparks, reset the power strip and tripped the breaker. Very bad! Very scary! Glad it didn't do this while unattended.)The second one failed with an open circuit - so you plug it in and there is no heat. (Thankfully, no sparks either!)I ended up taking the units apart just to see what was going on - they are very cheaply made. (I have photos if you're curious.)We have a couple "project" Willys Jeeps. These engine heaters keep them from freezing/cracking over our short South Texas winters. Also got one for the boat!Simple to use. Plug in to an AC power cord, then magnetically attach to the engine block. (Remember that heat travels upwards...)JDMc
mark e baldwin
2025-03-04 16:14:04
works great on frozen metal pipes that you can not reach, stick it on about 20 minutes later thawed out pipes
Kirk Bliesener
2025-03-03 15:55:02
It came when promised works great and was needed it asap be to keep my trackor diesel oil pan warm for winter starts.
J. Bruha
2025-01-30 18:28:51
This heater does just what it is supposed to do, which is to attatch to, and heat up, a steel or iron surface. It uses a magnet for attatchment, so it will not stick to aluminum. It also has a termostatic switch inside, which, according to the instruction sheet, is supposed to keep it at a steady 120-140 degrees F.It works well, you just find a fairly flat area the magnet will stick to, and it will warm it up, whether it is an oil pan, transmission housing, or even diesel fuel tank that has gelled in the cold. The way the magnet is mounted, even allows you to mount it on a (steel or iron) pipe, to prevent freezing, or to thaw one with ice inside.There are different sizes (wattage) of magnetic heaters available, from 100-400 watts so get one sized to your uses. In my opinion, the most useful size is the 200 watt. If you are only trying to warm up a small single cylinder engine, like a snowblower, or for where it doesn't get terribly cold, the 100 should be enough, and for a tractor, or very cold climates, you might want the 400. The 200 watt seems to work pretty good for all around use. Since it is thermostatically controlled, it will not overheat a small engine, yet if you leave it on for long enough (a couple hours or more) it makes a noticeable difference in starting ease for my 65 HP tractor, and I believe is sized just right for my full sized pickup truck, for where I live (Nebraska).It is simple to use, just plug it in, and stick it on. The magnet is strong enough it doesn't shake loose or move around if I leave it on the tractor while using it (if you do this be mindful to route the cord safely), yet is fairly easy to remove. I don't know how I'd like this for a car, as the 'best' place to mount this, is towards the bottom of what you want to heat, which would be the oilpan of an engine, and most cars don't have a lot of room under there for access. Works fine for my 4WD pickup truck, as it is high enough to just reach underneath to access the oil pan.Why the 3 star rating? From lack of durability from past Kat's heaters. When they work, they work very well, but it seems about every 2-3 years, something goes haywire (my guess is the thermostat sticks) and it gets hot enough to warp the plastic cover over the heating element. Once this happens, gaps appear, and I don't feel safe continuing to use it. However, it works well enough, and isn't terribly expensive, so I keep buying a replacement. I use this on my tractor, by plugging it into a timer so it comes on 3-4 hours before I plan to drive it, and on an average year, I maybe need it 40-50 times. To me, it should last more than 100-150 cycles.
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