Manufacturer reference photos may show other components. Your order includes the sale unit described here.
aFe · New
aFe Magnum (3x4-3/4)in Flange ID x (4x5-3/4)in Base x (2-1/2x4-1/4) FLOW Pro DRY S Air Filter (Pair)
MPN 21-90054-MA · Store SKU afe21-90054-MA
Sold as a pair (2 parts).
Supplier stock checked 11/8/2026, 9:19:45 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
This filters feature three layers of our Pro DRY S oil-free synthetic media to provide a high-flow performance filter with a simplified maintenance routine. The progressive layering provides great filtration efficiency and dust holding capacity. This media is best suited for street and light off-road use. Pro DRY S filters are easily recharged with aFe's POWER CLEANER. aFe POWER performance air filters use a rounded, evenly spaced pleat design which allows for more usable filter surface area, providing increased flow and greater dust holding capacity. These aFe POWER performance air filters are constructed with a polyurethane base and top. Unlike other materials that degrade after repeated heat cycles in an engine bay, polyurethane maintains its original molded shape. Magnum FORCE Intake Replacement Air Filter w/ Pro DRY S Media (3x4-3/4) IN F (4x5-3/4) IN B (2-1/2x4-1/4) IN T x 6 IN H Magnum FORCE Intake Replacement Air Filter w/ Pro DRY S Media
Manufacturer fitment & guides
Check 21-90054-MA against the manufacturer’s application information below.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- Emissions acknowledgement required before purchase.
- California Proposition 65: Y
