For those living in warm climates where cold starts are not an issue, the OE heater grid can be replaced with S&B’s Heater Block Delete, which will provide a 30.91% improvement in airflow. Fits 1998-2007 Dodge 5.9L Cummins trucks.
2007.5-2018 Dodge 6.7L Cummins - Improve turbo response and reduce boost pressure drop/loss on the stock intake system. BD’s 6.7L Intake Elbow plenum is 74% larger with a 4-inch inlet and a full 6-bolt hole pattern compared to 5-bolt holes on other aftermarket elbows. Convenient ports have been added for connecting to gauges, water methanol injection and other injection nozzles.
Sinister Diesel's High Flow Grid Heater for 1998-2007 Dodge Cummins 5.9L 24V diesels dramatically improves the intake airflow in your truck. By removing the unused and obstructing stock unit, it creates a much clearer and smoother intake airflow resulting in noticeable performance gains.