Now available in convenient kits, you can replace deteriorated or damaged factory boots with ease! Designed with 5 layers of aramid fiber reinforcing for mechanical strength at high temperatures, and a special inner liner material that is highly resistant to heat and oil, our high-performance engine boots are the best option on the market for your charge air piping couplers. We routinely use these boots on trucks that make well over 100 psi of boost. In addition to offering the best strength available, they provide unparalleled durability. Because of the design and construction, they survive over the long haul in towing applications. To top it all off, we include our heavy-duty constant tension spring clamps to all but eliminate the chance of boost leaks and blow-offs. PDD High Performance Engine Boots and Boot Kits are currently available in a wide array of sizes and configurations to meet your needs. Universal sizes are available in straight shapes only for strength, but some angled boots are available for specific applications as well.