aFe · New
aFe Magnum FLOW Universal Air Filter 4 IN F X 7 IN B X 2-3/4 IN T X 9 IN H
MPN 25-40001R · Store SKU afe25-40001R
Supplier stock checked 11/7/2026, 12:21:17 PM 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 filter features five layers of pre-oiled cotton gauze media to provide maximum performance. Its progressive layering allows the filter to flow at high levels even when dirty. This media is perfect for street and/or track use. Pro 5R filters are easily recharged with aFe's POWER CLEANER and blue air filter oil. 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. This aFe POWER performance air filter is 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 FLOW Universal Clamp-On Air Filter w/ Pro 5R Media 4 IN F X 7 IN B X 2-3/4 IN T X 9 IN H Magnum FLOW Universal Clamp-On Air Filter w/ Pro 5R Media
Manufacturer fitment & guides
Check 25-40001R 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
