Diesel Power Source T3 3 Piece Exhaust Manifold 1998 2002 Dodge Ram 5.9L 24V Cummins High Flow Performance Lower EGTs Direct Bolt On (OEM 5014170AC, 5014170AD, 5014170AA, 5014170AB, 3937187) standard bore MILWAUKEE's press blocking system prevents NIT 1013 MILWAUKEE's press blocking system prevents improper ring and ring jaw mismatch providing peace of mind in quality connections It does not contain lead Performance You Can Measure 20 25% increase in exhaust flow efficiency Up to 200°F reduction in exhaust gas temperatures Faster variable geometry turbo response and spool Enhanced fuel efficiency through improved exhaust scavenging Increased towing capacity and hill climbing performance Smoother idle and reduced engine noise Compatible with all aftermarket tuning and modifications Complete Compatibility Assurance Specifically engineered for 1998 Our manifold directly replaces OEM parts 5014170AC