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  1. Vehicle Heaters
  2. Kats Heaters
  3. Engine Block Heater
  4. Frost Plug Style
  5. 600 Watts
  6. CSA Approved
Kat's Heaters Custom Engine Block Heater - Frost Plug Style - 120V - 600 Watts - 35 mm

Kat's Heaters Custom Engine Block Heater - Frost Plug Style - 120V - 600 Watts - 35 mm

Item # KH11618
Our Price: $36.87
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Shipping Weight: 0.61 lbs
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Kats Heaters Engine Block Heater - KH11618
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This frost-plug heater replaces the frost plug in 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 Engine Block Heater - Frost Plug Style - 120V - 600 Watts - 35 mm part number KH11618 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (100)
  • Q & A (0)
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Kats Heaters Vehicle Heaters - KH11618

  • Engine Block Heater
  • Frost Plug Style
  • 600 Watts
  • Kats Heaters
  • CSA Approved

This frost-plug heater replaces the frost plug in 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.


  • Ensures smoother start-ups and faster heating and defrosting of your cab
    • Replaces frost plug (core plug) in engine block and submerges in coolant
  • 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
  • Constructed of corrosion-resistant brass
  • Custom fit for your vehicle
  • CSA approved
  • Made in the USA


  • Diameter: 35 mm
  • Wattage: 600 watts
  • Amperage: 5 amps
  • 1-Year limited warranty


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

Start your engine easier and warm your cab faster in cold weather with this frost-plug-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.

This frost-plug heater replaces the core plug in your engine block. 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. If needed, a longer or shorter cord (sold separately) can be purchased to better fit your application. Make sure the heating element is fully submerged in the coolant before plugging it in.

11618 Kat's Heaters Custom-Fit Engine Block Heater - Core Frost Plug Style - Removable Power Cord - 120 Volts - 600 Watts

This Product Fits The Following Vehicles

Customer Reviews

Kat's Heaters Custom Engine Block Heater - Frost Plug Style - 120V - 600 Watts - 35 mm - KH11618

Average Customer Rating:  4.5 out of 5 stars   (100 Customer Reviews)

This frost-plug heater replaces the frost plug in 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.

Dodge Ram Pickup

Works great, no issues with the product but the cord is short for my Ram since the original connection site is near the back of the engine block. I have to open my hood to plug it in which isn't a hude deal but an extra 8-12" of length would have been nice.

2002 Jeep Grand Cherokee

Bought this to replace the factory installed one. Item was easy to install. Shipping and overall online experience from etrailer was top notch.


As described


This review is for block heater KH11461 installed in a Mahindra 5010 with the 49 hp Daedong engine, after one year. This block heater came with the tapered bushing to fit in a 1 1/4" frost plug hole next to the starter. Tap out the frost plug (screwdriver, hammer) Tap in bushing (hammer piece of wood and sleeve retainer from NAPA). Screw in the block heater. Fill with antifreeze and run the engine to ensure there is no air in the cooling system to prevent burning out the heater. I also added a battery heater and trickle charger all on 1 cord permanently mounted under the hood. This now starts well below zero easily. etrailer has a video of this product.


I needed a frost plug core heater for my tractor. The one I bought did not have my tractor as an application. Just autos and trucks. The measurements were exactly what I needed as well as the wattage. I called a rep to confirm that the measurements were accurate and took a chance and bought it. Exact fit, easy install and happy customer! Thanks Phillip for your help. I highly recommend e-trailer for parts, supplies and great customer service.


This part came and I was not told it was repackaged and sold as new. When I went to install it the wrench marks and thread marks were off. I tested it and could not find continuity so it was broken inside. Alas, when I reached out I was told it was too far out of date to ask for a new one. Granted it was a month or two after.


Fits the application perfectly & priced right.


Fast shipping, competitive pricing and a very feputable company. Part was exactly as ordered.


excellent for farm tractors; use on perkins diesels ,and simpson diesels; just installed and is working fine! a good one should last 20 years; the one I replaced (for a tractor from a tractor supply house lasted less than 2 YEARS, the one before had gone the 20 years) your block heater has a heavy duty cord and the threaded cuff lock down nut on the sender was an all time first for me, thanks. To use this kit 11409 your must already have the block bushing or the bushing for a block heater for this kit will be # 11461b and about $7.00. Noticed your were in SPRINGFIELD TN; I farm in Tn and Ky. good for you. thanks again. TERRY FITZPATRICK, Austin, Ky


I am very satisfied. I had looked for awhile for this size and let me tell you, This company communicates and keeps you informed of your purchas and shipping. I installed this in a 1986 Massey Ferguson 3cyl diesel. No one else carries this size that I could find. I will buy from again.


Still working great after a year.


I just received this block heater today and have not installed it yet but it looks real simple. was a great price and fast shipping


I bought this as a supposed upgrade for the stock 750w heater in my 12v Cummins. This heater failed almost immediately, I think I used it twice before realizing it wasn't working anymore. etrailer was helpful and offered to exchange it under warranty, but I did some research and found a lot of negative reviews of this style of Kat's heaters.

I decided I would be better off washing my hands of this heater altogether, and ultimately ended up installing two 750w Cummins heaters in my engine to satisfy my desire to upgrade.


Heater is good but it didn't fit in the frost plug hole that had the existing heater in. This replacement had a longer element and it touched the inside of block no matter what angle i turned it and would not seal properly. I think if it was in one of the other frost plugs maybe it would work? I have ordered many other block heaters from here with no issues. Like I said prob fits in different frost plug location so beware have a plan b ready. Hard to give bad review at these prices


Thank you!


Haven't installed this block heater yet, as it just came yesterday. It looks to be of great quality however, and I have a Kat's block heater in another vehicle that has worked great for years. I anticipate this one will as well.


It fitted good in the existing plug of the block heater.


One year later. Still works great and doesn’t leak. Very happy.


I bought this for my John Deere 4320 tractor. I had to take this to my local machinist to move the O-ring to 1/8" away from the plate; the plug opening has only 1/4" of wall available. It now fits and works perfectly!! Much better than the exorbitant price that JD asks for their block heater. I'm perfectly satisfied.


it was what i wanted when it got here- that's a big plus now days-they where slow to get them here but i'll forgive that as the product was right


This product works perfectly! It was installed on a 2006 Ford Escape XLT. I had a dealership install the heater. Living in the Midwest, on mornings below 10 degrees, I can definitely tell a difference in the car starting. The heat was slightly warm immediately after starting the car. This heater was used everyday for four months in the middle of winter in ND. The car was parked outside all winter and was plugged in all night. No issues! I would highly recommend this product.


put this block heater on a Kubota
D1105 (RTV1100) , 2012. In place of a heater that was already there . tighten up screw to specs, I could take one finger and wiggle it. was worried when it got to temp , it would leak or pop out and lose my engine. the old one was a friction fit, not a butterfly hold .
I have got other things from etrailer that were good, blocker heater did not work with this case. Not etrailer fault. KAT heater KH11487 not up to the job, have to go back to Kubota to get part.


Excellent service and excellent condition and place to deal with very happy with product Thanks Bill I just want to know about the other charge on my account if I am receiving another block heater as it was withdrawn from my account if so when can I expect the other one to be sent out


great service good price


Overall the product is very good. Its a 5 BUT........

Easy to install, but You have to be very careful not to over tighten or rake it will leak. (Like I said, my gulag for over tightening it. (but dang, it is a real fine line between loose and over tightened! Lol) Maybe torque specs needed!?!?

Used it to keep boat diesel motor warm all winter in the northeast.

In any case, keeps the Lehman 120 Diesel in my boat toasty warm. (I installed two on a thermostat and it works like a charm. Fire her up in the middle of February to go out for cod.

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