DEI Celebrates 25th Anniversary - Engine Builder Magazine
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DEI Celebrates 25th Anniversary

DEI is celebrating 25 years of sales, service and support as an innovator of heat and sound control products.

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Founded in 1995 by performance industry veteran Dale Markley and his wife Nancy, DEI quickly earned a reputation in the Cleveland, OH area and beyond for its dynamic, pioneering solutions to combat power-robbing under-hood heat issues.

Over the years DEI has designed and created unique “thermal tuning products” for the racing and performance aftermarket, as well as related industries such as aviation, powersports, marine and even locomotive. DEI is also well-known for its “build to spec” contract work for commercial, industrial and military-related businesses, along with a myriad of other industries.

DEI’s product list includes a wide variety of heat shields and thermal containment products, exhaust and pipe wraps, line and hose sleeving, sound control barriers & absorbers, headliners and accessories, safety gear and CryO2, which is designed to harness the cryogenic properties of liquid CO2 to lower intake charge temperatures resulting in more horsepower.

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With Dale’s son David at the helm since 2001, DEI remains committed to developing and improving products for its growing customer base as it heads into the next 25 years.

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