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 Replacement Filter KF-1070

Replacement Filter KF-1070

The 4 means that it was a 2004 model year

They have torture tested it for longevity

1999 Chevrolet C2500 LS

1994 Chevrolet C1500 Cheyenne

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 Replacement Filter KF-1070Easy 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