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Part# 05-12374


This revolutionary product, the “EZ Cool Flap” is a long awaited solution to this sometimes challenging task of climbing out without high CHTs. This revolutionary, retrofit electric cowl flap product will definitely help calm the fears of many RV owners and builders of these great aircraft.

Our effort turned out to be far greater in monetary and time investment than we initially planned but, all good things take time. After a considerable investment in design, engineering and testing many different configurations, learning and improving along the way. We now offer our product as the most logical, simple and easily installed device to address these temperature concerns.

This product is constructed of the finest aircraft alloys and workmanship available and is far superior to any and all other solutions available at any price. This product only weighs a few ounces, is extremely easy to use, and offers unparalleled protection for your aircraft engine.


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Works great. Solved the oil temp issues during climbout. Designed for RVs, but worked great on my Wheeler Express. I had previously replaced my oil cooler from a 8-row to 13-row and doubled the inlet flow with marginal results. This outflow cowl flap has solved the problem. Very well engineered and manufactured. Kit is complete and you won’t need to buy a bunch of other components

Jeff B
May 25, 2020


Q: Does the price reflect a set of 2 or only one of the cowl flaps?

This priced and sold as one of the cowl flaps, not a set of 2.

Q: What are the dimensions of the E-Z Cool Flap?

The entire unit is 7.1" x 5.675". This will go into a 6.1" x 4.675" hole. There is a 2-1/2" clearance inside.

Q: Does the E-Z Cool Flap come with the switch and led light?

It does come with both the light and switch.

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