Twisted Steel Twisted Steel header with T-4 turbo manifold for 1998.5–2002 Dodge Diesel L6 5.9L is built from mandrel-bent 304 stainless tubing with 1-3/4" head pipes stepped to 2" x .120" wall to increase exhaust velocity. The divided T-4 flange accepts larger turbos, includes 1/8" EGT ports and is 100% TIG-welded for strength—improving turbo spool, throttle response and usable torque without sacrificing durability.
aFe Twisted Steel Header Turbo Manifold (T4) 98.5-02 Dodge Diesel Trucks L6 5.9L (td)