4BT Exhaust Flange Billet 2.0” fits CumminsItem #: 090312-3V2 | Intake and Exhaust Flanges and Manifolds
Exhaust flange fits Cummins 4BT. 3D Machined from rectangle port shape to 2.0" schedule 10 round (2.157" ID). 1.5" schedule 10 (1.682" ID) round outlet also available. Made for maximum flow with minimum weight. CNC machined in house. Current flanges will look like the 4BT 1.5". We will update pictures shortly.