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Design Engineering Inc. (DEI)

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Kansas City, Missouri - 64734 United States
Phone: 615-378-1198
Design Engineering Inc. (DEI)

Design Engineering, Inc., founded in 1995 by the late Dale Markley, is the leading aftermarket manufacturer and global supplier of performance heat and sound control products. DEI engineered products offer the most effective means to improve an engine’s cooling efficiency to enhance performance. Boom Mat, the company’s sound deadening product line, offer products that keep a vehicle’s interior cool and quiet.

Based in Avon Lake, Ohio, the company has continued to grow employing 30 under the leadership of the Markley family and through the expansion into new product lines including: Boom Mat™, Ny-Trex™, Radiator Relief™ and CryO2™. In addition to supplying the performance automotive aftermarket with thermal tuning products, DEI serves the needs of the powersports, marine, industrial and commercial industry markets worldwide.

DEI Introduces EXO Series™ Line and Hose Protection

DEI Introduces EXO Series™ Line and Hose Protection

DEI'sEXO Series™ Sleeving has all the features of DEI's popular Fire Sleeve™with one benefit that makes it ideal for off-road racing, dirt track or extreme sports. Like the Fire Sleeve, the DEI EXO Sleeve is constructed of high-temperature resistant glass…

Design Engineering Inc. (DEI) Introduces Form-A-Shield™

Design Engineering, leading innovator of heat and sound solutions for the aftermarket, introduces Form-A-Shield™ (, a new thermal product that can be applied direct to hot surfaces to provide outstanding heat protection. Made of flexible 10 mil dimpled aluminum with…


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