Wrapping headers and down pipes is an important first step in controlling unwanted underhood radiant heat. Keeping exhaust gases hotter within the exhaust system helps in decreasing exhaust density and increases exhaust flow. This improves exhaust scavenging resulting in cooler air intake temperatures for an improvement in performance and a gain in horsepower. Design Engineering stainless steel Locking Ties are the perfect way to fasten exhaust wrap for a easy, clean and professional installation. Reduce under hood temperatures a realistic 50%Improves horsepower Withstands 1200F direct/2000F radiantOnly exhaust wrap with installation guide lines Added durability and heat retention NOTE: Design Engineering HT Silicone Coating spray is highly recommended for DEI glass fiber weap to penetrate, seal, protect and prolong the lifespan of exhaust wrap.Pit Stop USA offers DEI Design Engineering Exhaust, Header Wrap 2"x 15 Ft. - Black 10121 at low everyday prices. Be sure to check out all of our products from Design Engineering including Design Engineering Header Wrap and DEI Header Wrap.