Find a huge variety of Silicone Couplers & Boots you need to finish your project 1998.5-2002 Dodge 5.9L Diesel. For increased strength, these silicone or rubber boots are reinforced to deliver a long service life. Sizes from 2" to 6" in diameter are available to fit the application for the boot you need. Whether you need a reducing, hump, straight, or an angled boot ranging from 45 to 90-degree bend, you'll find the coupler you need. XDP has all the best brands such as PPE, Vibrant, Mishimoto, and Full Send.