Exhaust Headers for Dodge Durango (2011-2022) 5.7L V8Upgraded Exhaust Manifolds for 2011 2022 Dodge Durango This upgraded exhaust manifold set directly replaces the failure prone OEM cast units on your 5. 7L HEMI to eliminate exhaust leaks and sheared mounting hardware. The Stock Durango Thermal Cycling Problem The 5. 7L HEMI engines are notorious for exhaust manifold bolt failures. The factory cast iron manifolds undergo severe thermal cycling under heavy loads, causing substantial thermal expansion