The cast intake horn on the Cummins is a known choke point. It not only makes performance gains but looks much better too.
Intake Horn For 1989-1991 Dodge Ram 250 350 First Gen 5.9L 12V Cummins D250 D350
Intake Horn For 2001-2004 GMC / Chevy 6.6L LB7 Duramax Diesel ASI
94-98 Dodge Ram 5.9L 12V Cummins Intake Horn Manifold 3925046 2nd gen diesel
Jeep Wrangler TJ 1997-2006 4.0L, 6-cyl Air Filter Cleaner Box INTAKE HORN
Cummins Intake Horn Heater Grid 5264566 4940849 4131849 Gasket Dodge 6.7L 24V
Cummins 5264566 4940849 Intake Horn Heater Grid Gasket-1 Gsk Only Dodge 6.7L 24V
