Mishimoto Mazda RX7 FD w/ LS Swap Black Silicone Hose KitMishimoto Mazda RX7 FD w LS Swap Black Silicone Hose Kit Mishimoto Mazda RX7 FD w LS Swap Black Silicone Hose Kit Mishimoto has developed a new Mazda RX 7 FD Silicone Hose Kit for the LS1 V8 motor. The RX 7 FD with LS Swap silicone hose kits are made with a dual layer combining high grade silicone and heat resistant embedded fibers to provide efficient heat reduction and increased pressure tolerance, all with a direct OEM replacement fit! Silicone