Design Engineering, Inc (DEI), suppliers of thermal tuning products, offer the full line of DEI, CryO2, Boom Mat, Ny-Trex, Radiator Relief and SPA Turbo products 

DEI, Design Engineering, Inc.

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DEI Cooling System Additive

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Starting at: $21.99

Design Engineering Inc. Cooling System Additive Learn More...

DEI CryO2 Cryogenic Air Intake

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Starting at: $136.99

DEI CryO2 Cryogenic Air Intake Learn More...

DEI CryO2 Intercooler Sprayer

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Starting at: $78.99

DEI CryO2 Intercooler Sprayer Learn More...

DEI Design Engineering Inc Cool Tape™

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Starting at: $15.99

DEI Design Engineering Inc Cool Tape™ Learn More...

DEI Design Engineering Inc Exhaust Wrap

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Starting at: $31.99

DEI Design Engineering Inc Exhaust Wrap Learn More...

DEI Fire Wrap 3000

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Starting at: $54.99

DEI Fire Wrap 3000, Constructed from the same material as Fire Sleeve but with the convenience of a hook & loop edge closure design. Simply wrap Fire Wrap 3000 around wires, cables or hoses without Learn More...

DEI Heat Sheath Aluminized Sleeving

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Starting at: $13.99

DEI Heat Sheath Aluminized Sleeving Learn More...

DEI Protect-A-Boot and Wire Kits

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Starting at: $24.99

DEI Protect-A-Boot and Wire Kits, Each kit includes everything needed to protect spark plug boots and wires from harmful under hood heat. Color matched Protect-A-Boots™, Protect-A-Wire™ and Learn More...

DEI Protect-A-Boots

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Starting at: $16.99

DEI Protect-A-Boots are made from a high temperature resistant glass fiber material and treated with a proprietary coating, Protect-A-Boots provide spark plug boot and wire protection from extreme Learn More...

DEI Protect-A-Wire

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Starting at: $12.99

DEI Protect-A-Wire, Protect expensive spark plug wire sets from potential burning, cracking, and hardening typically caused by severe under hood heat. Easily installs on wire by removing distributor Learn More...

DEI Spark Plug Wire Boot Shrink Tubes

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Starting at: $16.99

DEI Spark Plug Wire / Boot Shrink Tubes Learn More...

DEI Titanium Pipe Shield - Exhaust Heat Shield

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Starting at: $38.95

Titanium Pipe Shield - Exhaust Heat Shield Extreme heat can rob power and potentially damage engines, transmissions, hoses, and sensitive electrical components. DEI, a market leader in thermal Learn More...

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