National Spring Heavy-Duty Leaf Springs

Brand: National Spring | Part #SUS-78D9F3

Category: Suspension > Leaf Springs

The National Spring Heavy-Duty Leaf Springs (P/N SUS-78D9F3) is a direct-fit Leaf Springs for the vehicles listed in the fitment section. Damping curve is tuned to match factory ride height and spring rate, preserving the original handling and steering feel. Sourced from National Spring, a recognized supplier in the aftermarket auto parts channel. Part number SUS-78D9F3 is the manufacturer reference — match it against your old part or VIN-based lookup to confirm you have the right unit. Confirmed fitment on 2008–2016 Acura including Integra, TLX, MDX Type S. Use the year/make/model selector above to verify your exact configuration before checkout. Ships from a US warehouse in 1–2 business days. Free shipping on orders $75+, flat-rate ground otherwise. Backed by a 90-day return window — if the part doesn't fit or the wrong unit was shipped, send it back for a full refund.

Price: $175.99 | In stock — ships within 1-2 business days. Free shipping.