Shop By Vehicle

Design Engineering

Design Engineering Thermal heat barrier protection products for Cars, Trucks, Jeeps, SUVs, UTVs, Boats and RVs


For over 25 years, Design Engineering, Inc. (DEI) has been known for producing exceptional quality heat control products primarily sold through the performance distribution system. But there's another facet of DEI’s business - working with other customers to help solve their heat and sound control problems.

Design Engineering works with these customers to define their problem, determine the correct materials necessary to handle their heat or sound control issues and work to design a solution. Our in-house design team can quickly turn around first article prototypes for inspection, for fitment and evaluation purposes. Once a final design is tested and approved by the customer, production begins based on their requirements.

Over the years, Design Engineering has designed custom solutions for many industries and fields including, aviation, powersports, racing, marine and even locomotive. We have also produced "build to spec" contract work for commercial, industrial, and military-related businesses to name a few. All of these businesses who decide to contract Design Engineering for heat and sound solutions have recognized DEI’s capabilities and ability to come up with correct and innovative products to solve the problem.

The late Dale Markley, well known and long time performance industry veteran, founded DEI in 1995. Dale and his wife Nancy formed the company with a vision of developing dynamic solutions for the racing and performance industry's ongoing struggle with underhood, power-robbing heat issues. The business was started in a small space, located in Cleveland, Ohio, behind a convenience store, and within a few years had to double the space. Before Dale's passing in 2001, he and Nancy worked together and brought DEI and its "Thermal Tuning Products" to a whole new level.

Fueled by success and further growth, it was necessary to expand operations, and in late 2004, DEI relocated from its leased location to its newly acquired complex that houses office, warehouse and manufacturing operations. The new facility afforded DEI ample room for future expansion and, in fact, manufacturing and warehouse expansion plans were quickly underway.

Today, DEI is bigger, stronger, and "cooler" than ever. With Dale's son David at the helm, the family is committed to continuing Dale's vision of moving DEI forward by developing and improving products to ensure they remain industry leaders.  DEI products include Heat Shields, Heat Reflectors, Pipe Shields, Turbo Shields, Header Wrap, Exhaust Wrap, Plug Boots & Wire Kits, Line Sleeving & Tubing, Coolant Additives, Cryo²™ Cooling System, Damping Materials, Speaker Baffles, Noise Barriers, Sound Absorbers and more. Accesspeed is proud to offer Design Engineering products to our customers. With our lowest price match guarantee, you will always find the best combination of price and selection at Accesspeed.