These Weistec filters are compatible with the 5.5 Biturbo and the 4.7 Biturbo (M157 and M278 engines). When analyzing the factory airbox and flow characteristics we found the placement of the filter in the box to be a significant restriction. Improvements in filter shape and positioning, combined with our very own high flow element provides a significant flow and power increase across all ranges of the engines power band. Learn More
The Weistec M156 High Flow Air Filters are made with our very own high flow element that significantly outflows the factory air filters. The filters are a drop in replacement for all M156 powered vehicles. The M156 High Flow Air Filters are “dry” filters, they do not cause issues with the Mass Air Sensors like some of the oiled filters available. Learn More