Find a huge variety of Silicone Couplers & Boots you need to finish your project 1994-1998 Dodge 5.9L Diesel. 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. Sizes from 2" to 6" in diameter are available to fit the application for the boot you need. For increased strength, these silicone or rubber boots are reinforced to deliver a long service life. You'll find top brands such as Vibrant, PPE, Full Send, and Mishimoto brand products available at XDP.