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  1. Vehicle Heaters
  2. Kats Heaters
  3. Engine Block Heater
  4. Cartridge Style
  5. 400 Watts
THIS ITEM IS NOT A FIT FOR
2003 Isuzu Rodeo
Kats Heaters

Kat's Heaters Custom Fit Engine Block Heater - Cartridge Style - 120V - 400 Watts

Part Number: KH11810
$76.95
Vehicle Heaters
Not Confirmed to Fit

2003 Isuzu Rodeo

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This cartridge heater clips into the cavity of your engine block and submerges in the coolant to keep engine fluids from thickening. Results in easier start-ups, faster heating of your cab, and less wear and tear on your vehicle in cold weather. Great Prices for the best vehicle heaters from Kats Heaters. Kat's Heaters Custom Fit Engine Block Heater - Cartridge Style - 120V - 400 Watts part number KH11810 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (198)
  • Q & A (0)
  • Videos (2)
  • Photos

Kats Heaters Vehicle Heaters - KH11810

  • Engine Block Heater
  • Cartridge Style
  • 400 Watts
  • Kats Heaters

This cartridge heater clips into the cavity of your engine block and submerges in the coolant to keep engine fluids from thickening. Results in easier start-ups, faster heating of your cab, and less wear and tear on your vehicle in cold weather.


Features:

  • Ensures smoother start-ups and faster heating and defrosting of your cab
    • Clips into cavity of engine block - no need to remove your frost plug
  • Warms engine fluid to increase lubrication and performance
    • Keeps fluid from thickening and protects against damage in cold weather
  • Pre-heats engine to reduce condensation in the engine block
    • Emits less pollution and fewer gas emissions
  • Includes removable power cord
    • Route through your grille and plug into standard 120-volt AC outlet
  • Durable cast-aluminum heating element
  • Custom fit for your vehicle
  • CSA approved
  • Made in the USA


Specs:

  • Cord length: 5'
  • Wattage: 400 watts
  • Amperage: 3.3 amps
  • 1-Year limited warranty


Notes:

  • Do not use this heater with a 100-percent antifreeze solution.
  • Do not start your engine with the heater plugged in.

Benefits of a Heated Engine

Start your engine easier and warm your cab faster in cold weather with this cartridge-style engine block heater. Heating your engine coolant keeps it from thickening and freezing, resulting in more reliable start-ups and smoother operation altogether. It also lessens the workload and extends the life of your vehicle's battery. And because starting your engine when it's warm creates less condensation in the engine block than starting it when it's cold, your engine will get better initial fuel vaporization, which causes fewer emissions and less pollution.


Cartridge-Style Heater

This cartridge-style heater simply clips into the cavity of your engine block. There is no need to remove the core frost plug. The power cord on the heater is removable so that you won't need to buy a whole new heater if the cord gets damaged. The cord can be routed through your grille for easy access to a 120-volt outlet or extension cord. Make sure the heating element is fully submerged in the coolant before plugging it in.



11810 Kat's Heaters Custom Fit Engine Block Heater - Cartridge - Removable Power Cord - 120 Volts - 400 Watts



This Product Fits The Following Vehicles




Video of Kat's Heaters Custom Fit Engine Block Heater - Cartridge Style - 120V - 400 Watts
Video Thumbnail Video Player Dialog

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for What to Know About the Kat's Heaters Custom Fit Engine Block Heater

Speaker 1: Today we're going to be taking a look at Kat's Heaters custom fit cartridge style engine block heater. You'll want to refer to the fit guide here etrailer.com to determine which block heater is going to be appropriate for your vehicle and the engine. These cartridge style heaters are custom fit for your engines, and just slide right into the block, and transfer heat through the block to help warm up the coolant, to allow for easier starting and quicker heat up times. So what this means for you is you don't have to worry about difficult starts, making it for a longer time in the morning to get started, or potentially miss work. The people who can benefit from this most are ones that drive diesel engines. Diesels use glow plugs to heat the engine.

However, sometimes it can take several key cycles to get the engine warm enough to properly start. Having a block heater on it like this will help ensure that it will fire right up. Additionally, your engine is going to heat up faster since its had a headstart, so you're going to have heat coming out your events faster on your way to work. It features a five foot cord that can be routed up to your grill area, where it can be mounted permanently.So whenever you want to use it, you can simply plug an extension cord in, plug it into the wall, and it'll start to heat up your block. The heater produces 400 watts of power.

And this is pretty substantial, so this is going to warm it up fairly quickly and evenly throughout. Even though it does come from a central point. It's made of a durable cast aluminum, so it's going to be lightweight and corrosion resistant. We're under our vehicle now. We're going to show you a typical installation.

Looking at the backside of our engine block, now the backside isn't always where they're going to be, but it will be on your engine block. You are looking for a cavity. You can see ours right up here. Now we'll take our heater. We're going to insert it in the hole.

It's a good idea to take some compressed air or something and blow out any dirt and debris in the hole. And then also coat your heater with silicone. This will help transfer heat better, as well as keep out moisture from getting inside.We're not going to be coating ours with silicone today for demonstration purposes, but afterwards you'd simply slide it in. And that's what it'll look like when you've got it fully inserted. As you can see, it's flush up against the block, and our clip has clipped around the side of the block there, and this will ensure that it can't come back out. Next you'll just route the wire up to the front of the vehicle. A good place for it is behind the grill, where you can tuck it back out of the way, and you won't be able to see it, but you can access it to plug it in when you need it. Whenever you're routing your wire, you want to avoid any moving objects such as your steering or drive train components. And any excessively hot objects, such as your exhaust. So you can see here we've got our cord routed to the front of the vehicle right in the center.We can now plug it in with an extension cord, and start heating up our engine. And then if we're not using it, we can easily tuck it back out of the way, and you don't even know it's there. There is no on or off switch, as soon as you plug it in it begins to heat. Now we do have ours on a lift. You'll most likely be doing this on the ground. We've had it plugged in for about 20 minutes. Let's check our temperatures. At the plug, we're measuring about 110 degrees. You can see as we take a measurement on the side of our block, we're at about 100 degrees, so it's spreading pretty well throughout our engine. So as you can imagine, if it was 19 degrees outside, this would be like starting your vehicle on a warm summer day. And that completes our look at Kat's Heaters custom fit cartridge style engine block heaters.

Ratings & Reviews

4.2

198 reviews
5 Stars
(129)
4 Stars
(32)
3 Stars
(9)
2 Stars
(6)
1 Star
(22)
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by:
Easy to install, but the heater cord passes to close of the exhaust manifold, they should provide a heat shield in the kit. Excellent product.
by:
2018 Chevrolet Colorado
Looks just like what I ordered, shipping was prompt. Seems to be just what I need but it isn't installed yet.
by:
2015 Toyota RAV4
by:
Pontiac Montana
The block heater and battery warmer worked excellent last winter! Looking forward to having them for the upcoming Montana winter:-)
by:
Shipped twice without the clip attachment. You’d think after the first return somebody would check the product before shipping.
by:
The install was so easy it almost installs itself.
Find the hole on the back of the block, plug in the heater, snake the cord up and zip it in place.

So far it's held up to regular country road driving conditions and regular use.
Only reason I didn't give it 5 stars is that, even on a 65ºF day it still takes 2.5 hours to get my block close to operating temp. Even factoring the thermal mass of the engine, still I have plug-in appliances that pull 4x the wattage; I wonder if they could've goosed it a little so I don't have to turn it on ~3 hours earlier.
by:
2013 Toyota Camry
Works very well on my 2013 Toyota Camry.
by:
Toyota Tundra
I installed this engine block heater on a 2021 Toyota Tundra. The installation was fairly straight-forward as far as installing the actual heating element into the engine block. The challenging part was routing the electrical cord to the front of the truck. Mind you I had the truck elevated by tire ramps during the time of installation.
by:
2018 Toyota RAV4
Top service and peoples with high class I recommend this company
by:
Installed this on my 2019 Toyota Tacoma. Haven’t really tested it out yet as I installed it before it got seriously cold. Installation was easy. Just follow etrailers super helpful video. I did have to file a slight flat on the heater to clear the bell housing overhang. Not a manufacturer issue on the heaters part. Just normal variance on Toyota’s end.
by:
2014 Dodge Ram Pickup
2014 Dodge Ram 5.7L uses Kat’s 11816 cartridge heater. Perfect fit. Must remove the two starter bolts and slide it out of the way. Don’t disconnect starter wires. Just slide starter out of the way. Easily done with truck on ramps. Clean out hole. Find a correct size retaining screw. Not sure what size or If hole is threaded. Too much rust. Just be able to jam some screw in there to retain the cartridge, until silicone dries. Smear about an inch wide layer of high temp silicone around the base of the cartridge. Insert cartridge, twist back and forth to spread silicone, and hold in place with retaining screw. Route wire straight forward. I used 1 1/8” spade bit to drill a hole in black plastic in bumper, but my bumper was already messed up, so I didn’t care much. Plug hangs out grill about 3”. Use zip ties to secure cord to square tubing frame post inside bumper.
by:
The product itself seems fine, but in spite of my communications with etrailer and, through them, Kat's, the item did not fit as promised. The installation attempt cost me $[XX].
by:
Quick delivery and part fit my vehicle perfectly.
by:
2019 Lexus RX 350
This engine block heater is an affordable option to the OEM block heater. Easily installed on a 2019 Lexus RX350. I have this paired with a battery trickle charger for the very cold northern Canadian winters. I've had no issues after 1 year of ownership using this product. Recommended to anyone needing a cartridge style block heater.
by:
2018 Toyota Tacoma
Arrived fast to Canada. Couldn’t find anywhere else! Will be installing in spring when not to gross underneath since we are through the cold now. 5 stars for delivery and communication will update once installed!
Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

2/26/2025

Hey Matt. Let us know how the install goes once it warms up!

Matt profile picture

Matt

2/25/2026

Install was super easy, product works great exactly as expected. Since installing we have not had the same temps that I ordered it for but sure does allow the engine to crank effortlessly.

by:
Has advertised and packing was great
by:
Toyota Tacoma
helps alot with the winter months engine turns over easier Considering Toyota said that it wouldnt work on my 2022 4 Runner which I knew it would having a Tacoma before with the same engine 4.0 every little bit helps at -15
William profile picture

William

5/13/2025

great toyota said the engine doesnt have a well for this heater THEY ARE WRONG the heater helps out good gets cold in the NW it definetly helps out

Kate F. profile picture
Etrailer Expert

Kate F.

5/19/2025

@William Glad we had the right fit for you William! The Toyota guys probably just wanted you to buy a new car, why buy new when you can make what you have better =)
by:
2020 Dodge Grand Caravan
Great communications, fast shipping, AWESOME!
by:
Catastrophique!

La prise de connexion n'est PAS en silicone.
Résultat : elle a fondu en 5 minutes : C'est scandaleux. Produit de mauvaise qualité et DANGEREUX car j'aurais pu mettre le feu à ma voiture.

Je demande un remboursement ou un nouveau produit.
by:
2018 Toyota RAV4
Quality block heater. Cord length was more than enough and shipping to Canada was pretty quick. The block heater worked well over the winter and helped make starting our 2018 Rav4 much easier.
by:
2015 Hyundai Sonata
2015 Hyundai Sonata 2.4 install. Have to remove air intake, very tight to get it in just enough space. Had to trim a little bit to make it fit but nothing ever fits perfect. Picture say it all.
by:
toyota Tacoma
The Toyota original block heater for my 2020 Tacoma was recalled. In interior Alaska I needed one. Not only was the Kat's Heater the only aftermarket solution available with good reviews and it shipped quickly, it's a great design and keeps my truck from freezing up in -40 or colder. Instead of removing everything under the truck necessary, I lined it up and slightly filed the edge of the metal to conveniently get it to seat fully, which is very important. This is the solution if you want to install fast. 5/5 stars. Still working great in its second Alaska winter.
by:
2016 Hyundai Elantra
I live in northern Ontario, Canada. Average temp is -20 but has gone as low as -30/-35. This heater was installed in a 2016 Hyundai Elantra GLS 2.0 engine. Installation was easy once the battery box was removed. Slipped in the cavity real nice. The heater was plugged in for 4 hours at -20c. I then tested the engine for warmth. To my surprise the engine block was warm to the touch and the snow had a small circle on the hood where it started to melt. This surpassed my expectation, and I highly recommend this heater. Uses 350 watts per hr. That's less than a frost plug heater at 550 watts per hr. Shipping, packaging and instructions all great.
Daniel C. profile picture

Daniel C.

1/21/2020

This heater is by far the best thing since sliced bread. This little heater will keep the engine warm to the touch at any temp outside. Still working great after one year.

by:
2022 Toyota Tacoma
So far so good, functional and easy to install
by:
Easy to install using the instructions on the eTrailer site, and they kept the vans rolling at -29 degrees F this winter.
Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

2/26/2025

-29 sounds a true test of durability, that's insanely cold! We recently had a few days below zero but nothing like what you get it sounds like. Stay warm Paul!

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Dustin K
Video Edited:
Dustin K
Employee Cole B
Installed by:
Cole B
Employee David F
Installed by:
David F
Employee Shelly K
Written by:
Shelly K
Employee Wilson B
Updated by:
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Employee Matthew E
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