2.5" to 4" Straight Reducer Silicone Coupler Black Hyundai Perfect Tool Cabinet for Anywhere:

Perfect Tool Cabinet for Anywhere: This tool box can be mounted on a hitch rack

1/8th NPT port is included to accommodate a nitrous setup or a fuel pressure gauge

AN FITTING

Elbow has a threaded bung in it for an oxygen (O2) sensor

2006 Dodge Ram 2500 SLT Night Runner Sport V8 5

2.5" to 4" Straight Reducer Silicone Coupler Black Hyundai Perfect Tool Cabinet for Anywhere:100% Brand New Item, Never Used Or Installed JDM Sport 4" to 2. 5" Straight Silicone Hose Reducer Coupler 3 Ply Nylon Reinforced Silicone Made to Withstand High Temperature & High Boost Applications Made By OEM Approved & ISO Certified Manufacturers With Materials That Meets Or Exceeds Strict OEM Requirements Works With Any Air Intake, Intercooler, or Custom Turbo Supercharger Forced Induction Setup Degree Type: 0 Inlet Outlet: 4. 0" 2. 5" * Clamps