
HKS · New
HKS PISTON RING SET N4
MPN 21005-AN004 · Store SKU hks21005-AN004
Supplier stock checked 11/7/2026, 5:03:58 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
HKS PISTON RING SET N4
Manufacturer fitment & guides
Check 21005-AN004 against the manufacturer’s application information below.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.