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E-Z Heat Aircraft Engine Preheater Model 540 - 120V

Part# 07-05345
MFR Model# 540


E-Z Heat Aircraft Engine heater for the Model 540- 2 pads - 3 1/4" X 4 1/2" X 1/32" pad. Also, a 21" cord connecting the two pads.

Note: Please see "Engine Application Guide" Click Here for the correct EZ Heat model number for your application.

Preheating engines for winter operations is at best a miserable chore and at worst can be a disaster for the plane, the pilot & flight operations - until the development of the E-Z Heat Aircraft Engine Heater. The E-Z Heat was designed to provide very efficient engine heating for virtually all propeller driven aircraft. The heaters consist of a flexible synthetic pad that easily conforms to the contours of the oil pan. This pad will heat 12 qts of oil from -40 to +60F in an hour while using approximately 300 watts of electricity. The heater is 1/32" thick. which enables the immediate heat transfer from heater to engine.

The heaters are thermostatically controlled, so leaving them plugged in overnight means the plane will be ready to go in the morning. Normally, complete pre-heating takes only 3-5 hours for the entire engine to be nice and warm. With this new lighted plug (120V models only, 220V models include no plug to allow for European outlet variance), the owner simply needs to look out the window or peek in the hangar to see if they remembered to plug in their E-Z Heat engine pre-heater. Molded into the male plug end is a newly designed light emitting diode (LED). This LED allows the operator to visually recognize if there is electrical power to the preheat system even from a distance. FAA approved for certificated aircraft.

End your cold weather starting problems and reduce premature engine wear.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.


The adhesive is already on the pad. All you need to do is peel and stick it on.

Preheat Time:
3 to 5 hours on cold soaked engine, although, since unit is thermostatically controlled, it may be left on overnight or all the time. Cowl covers and prop covers are recommended for extreme cold weather, they also reduce preheat time.

Lite Brite Plug:
With this new lighted plug, the owner simply has to look out the window or peek in the hangar to see if they remembered to plug in their E-Z Heat engine pre-heater.

Heat Transfer:
Convection/conduction, the safest way of heat transfer available. No flames or glowing elements are potential fire hazards.


  • Dimensions: 2 pads - 3 1/4" X 4 1/2" X 1/32" and 21" cord connecting the two pads

  • Watts: 320 total (170W & 150W)

  • Volts: 120

  • Amps: 2.6

  • OHMS: 45

  • Power Consumption: 300 Watts or less/ Thermostatically controlled

  • Power Requirement: 110/120 Volts

  • Weight: 9oz
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    Works wonders, i use an insulated engine blanket with this on my bonanza. I’ll leave it on overnight and my oil will be 90-110 degrees and my cylinders will get above 80 degrees. All of that with below freezing outside air. Well worth the money!

    Owen G Verified Purchase

    E-Z HEAT ENGINE HEATER 540 110V/120V

    January 30, 2023

    Very nice quality engine heater with an excellent price. Have had one on our A36 now for over 10 years with no issues. Your engine will thank you for a warm oil starts! Key to making it long-lasting is surface prep and a quality installation, especially sealing around the edges of the heat pads.

    Integrity A Verified Purchase

    E-Z HEAT ENGINE HEATER 540 110V/120V

    December 12, 2021

    Installation was easy.

    Douglas J
    December 29, 2020


    Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

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