Ram-Air Dry Filter for 17-19 Ford Super Duty 6.7L and 20-23 Chevy/GMC 2500/3500 6.6L Duramax Banks Power 6.7 Turbo They have torture tested it

They have torture tested it for longevity

The 4 means that it was a 2004 model year

2017-19 Ford 6

9% and produced 17 hp and 50 lbs

Ram-Air Dry Filter for 17-19 Ford Super Duty 6.7L and 20-23 Chevy/GMC 2500/3500 6.6L Duramax Banks Power 6.7 Turbo They have torture tested itEasy to install replacement filter (oiled or dry). Increased airflow, excellent filtration and longer service life. Banks Ram Air filter is a high flow air cleaner element that decreases intake restriction and sends more cool, dense ram air into your engine. Even wet or dirty, Banks Ram Air filters outperform conventional ones, because the multi layer design traps moisture, dust, and debris on the oiled or dry, outer surface, allowing air to move