K&N Engineering · New
K&N Custom Racing Assembly Carbon Fiber 4in Air Box w/o Base - Large
MPN 100-8591 · Store SKU knn100-8591
Supplier stock checked 11/7/2026, 10:56:24 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
Light weight yet durable, K&N's Sprint Car Style Air Boxes are a must for any racer currently using traditional multi-Siamese stacks. Constructed from ultra-light weight carbon fiber K&N's Sprint Car Style air box provides ample air flow for your racing needs. As with all K&N filters, it is a washable and reusable air filter. Simply use K&N oil and cleaner to service your filter. Constructed from ultra-light weight carbon fiber, K&N's Sprint Car Style air box provides ample air flow for your racing needs. As with all K&N filters, it is a washable and reusable air filter. CARBON FIBER; AIR BOX; LARGE; 4in. AIR BOX ONLY NO BASE Custom Racing Assembly
Manufacturer fitment & guides
Check 100-8591 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
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- Emissions acknowledgement required before purchase.
- California Proposition 65: Y
