Air Intake Filters & Replacement Filter Elements

If you're building a custom intake or need a replacement filter for yours, STM carries a huge selection of air filters from AMSOIL, COBB, HKS, K&N, Vibrant and our STM replacement filters. Filters are not vehicle-specific.

STM Universal 4.5" Inlet STM High Flow Air Filter $43.00
STM Universal 4" Inlet STM High Flow Air Filter $44.00
2.25 Inch Inlet Vibrant Performance Classic Air Filter 10920 $42.50
2.5 Inch Inlet Vibrant Performance Classic Air Filter 10921 $42.50
2.75 Inch Inlet Vibrant Performance Classic Air Filter 10922 $42.50
3 Inch Inlet Vibrant Performance "Classic" Air Filters from $42.50
3.5 Inch Vibrant Performance Classic Air Filter 10924 $42.50
4 Inch Inlet Vibrant Performance Classic Air Filters from $42.50
4.5 Inch Inlet Vibrant Performance Classic Air Filter 10926 $42.50
5 Inch Inlet Short Vibrant Performance Classic Air Filter 10932 $51.95
6 Inch Bellmouth Inlet Vibrant Performance "Classic" Air Filter 10960 $51.95
7 Inch Bellmouth Inlet Vibrant Performance "Classic" Air Filter 10961
Vibrant Open Funnel Air Filters $23.95
3 Inch Inlet K&N Universal Cone Air Filters from $35.99
3.156 Inch Inlet K&N Universal Cone Air Filter RC-9110 $61.99
HKS Replacement Filter Element (150mm Red) (70001-AK031) $18.70
3.5 Inch Inlet K&N Universal Cone Air Filters from $34.99
HKS Replacement Filter Element (150mm Yellow) (1504-SA012) $18.70
4 Inch Inlet K&N Universal Cone Air Filters from $35.99
HKS Replacement Filter Element (150mm Green) (70001-AK021) $18.70
4.5 Inch Inlet K&N Universal Cone Air Filter RU-4260 $48.99
HKS Replacement Filter Element (200mm Red) (70001-AK032) $22.10
6 Inch Inlet K&N Universal Cone Air Filters from $47.99
HKS Replacement Filter Element (200mm Yellow) (1504-SA013) $22.10
COBB SF/Big SF Replacement Air Filter - Nissan R35 GTR $75.00
HKS Replacement Filter Element (200mm Green) (70001-AK022) $22.10
K&N Universal 5" Air Filter (RU-2800) $50.99
K&N Air Filter Velocity Stack Flange (21512-1) $25.99