Banks Ram-Air Superiority. (2001-10) On W-Series Workhorse motorhomes, Banks Ram-Air intake system replaces the constricted stock setup for up to 66% more airflow than stock. The high-flow Ram-Air filter does away with intake obstructions so more cool, dense ram-air can make its way into the cylinders. The filter housing cover and tubing are larger than stock to enhance flow. And the Banks adapter enlarges the air filter box inlet to significantly improve airflow and power output. PartNumber : gbe49194 Description : Banks Power 01-10 GM 8.1L MH-W Ram-Air Intake System Add-On Part : 41022; 90094; Title : Ram-Air Cold-Air Intake System Oiled Filter 01-10 GM 8.1L W-Series Motorhome Banks Power 2002-2009 Workhorse W20 Base V8.-cc Air Intake Systems::Short Ram Air Intakes 2001-2009 Workhorse W22 Base V8.-cc Air Intake Systems::Short Ram Air Intakes 2004-2009 Workhorse W24 Base V8.-cc Air Intake Systems::Short Ram Air Intakes