Mishimoto Factory Fit Boot: Cold Side Lower Boot Multiple Fitments (MMBK F2D 03CL). Mishimoto Factory Fit Boot: Cold Side Lower Boot Mishimoto is proud to release a direct fIt'silicone boot with DuraCore technology designed specifically for the 6. 0L Ford Powerstroke. Mishimoto DuraCore technology is the synthetic material that comprises the innermost layer of all Mishimoto silicone diesel boots. Compared to normal silicone, DuraCore provides superior resistance to heat, pressure, fuel, and oil. This effectively increases the life of our boots by preventing leaks and blowouts. To add even more reliability this kit includes Mishimoto constant tension T bolt clamps for accurate and consistent holding power. This boot kit is precision engineered for a flawless fit on your Powerstroke and will provide years of service. Like all Mishimoto Powerstroke performance parts, this Powerstroke performance boot kit comes with the Mishimoto Lifetime Warranty. Applications 2003 2004 Ford Excursion Eddie Bauer 2003 2004 Ford Excursion Limited 2004 2004 Ford Excursion XLS 2003 2004 Ford Excursion XLT 2004 2004 Ford F 250 Super Duty Harley Davidson Edition 2004 2004 Ford F 250 Super Duty King Ranch 2003 2004 Ford F 250 Super Duty Lariat 2003 2004 Ford F 250 Super Duty XL 2003 2004 Ford F 250 Super Duty XLT 2004 2004 Ford F 350 Super Duty Harley Davidson Edition 2003 2004 Ford F 350 Super Duty King Ranch 2003 2004 Ford F 350 Super Duty Lariat 2003 2004 Ford F 350 Super Duty XL 2003 2004 Ford F 350 Super Duty XLT 2004 2004 Ford F 450 Super Duty Lariat 2004 2004 Ford F 450 Super Duty XL 2004 2004 Ford F 450 Super Duty XLT 2004 2004 Ford F 550 Super Duty Lariat 2004 2004 Ford F 550 Super Duty XL