K&N Engineering · New
K&N Round Air Filter 14in OD / 12in ID / 2.313in Height
MPN E-3740 · Store SKU knnE-3740
Supplier stock checked 11/7/2026, 9:31:37 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
The K&N E-3740 replacement air filter is designed to increase horsepower and acceleration by reducing restriction and increasing air flow to your engine. The E-3740 is made with oiled layers of woven cotton that offer superior filtration and can be washed and reused repeatedly. K&N replacement air filters can go up to 50,000 miles before cleaning is required, depending on driving conditions. One K&N replacement air filter costs less than replacing disposable air filters over and over again. The E-3740 is simple to install and is custom designed to fit right into the factory air box of older Ford Scorpio and Peugeot models, as well as other applications. K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. Stock replacement air filters for street vehicles are covered by K&N's Million-Mile Limited Warranty. 14in.OD; 12in.ID; 2-5/16in.H Round Air Filter
Manufacturer fitment & guides
Check E-3740 against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- California Proposition 65: Y
