Cummins ISX15/X15 Exhaust Manifold - Flex Bellow | Full Tilt rocker arm The side of the stud

The side of the stud that threads into the exhaust manifold flange is 3/8” coarse thread

Installing the boost gauge is simple when using the included compression fittings and black nylon hose that allows you to drill and tap your intake manifold for incredibly accurate readings

This Cat turbo elbow connects your turbo to the intercooler piping

and 3406B-E models — built to handle 550–700 HP with ease

Cummins ISX15/X15 Exhaust Manifold - Flex Bellow | Full Tilt rocker arm The side of the studFull Tilt Coated Flex Exhaust Manifold for Cummins ISX15 & X15 EGR (20112023) FLEX BELLOW Part Number : 054135 Tired of high EGTs and sluggish turbo spool? This Full Tilt Performance manifold is built to wake up your Cummins ISX15 or X15 (20112023 EGR models). With precision flow engineering and a high temp ceramic coating, youll get better exhaust velocity, improved fuel mileage, and long lasting durability all in one direct fit upgrade. Fits Cummins