Arnott Industries Air Suspension Spring P/N:A-4008
Restore a level, well-controlled ride at the rear of your truck with the Arnott Industries Rear Air Suspension Spring A-3635 (also written A3635). This rear air spring assembly drops in as a direct-fit replacement for the 2014-2025 RAM 3500 — see the Buyer's Guide tab for engine-level details. It replaces a leaking, cracked, or sagging original air spring so the rear suspension can hold proper ride height and cushion the load.
Signs the original rear air spring may need replacing include a sagging or uneven rear ride height, a rough or bottoming ride, audible air leaks, or a suspension warning. For balanced ride height and handling, Arnott recommends replacing the rear air springs in pairs.
Interchange: 68142889AA · 68239893AA · 68239893AB · 68239893AC · 68349606AA · 68349606AB
This part cross-references / interchanges with the following part numbers:
What vehicle does the Arnott A-3635 air spring fit?
It is a direct-fit rear air suspension spring for the 2014-2025 RAM 3500. Check the Buyer's Guide tab to confirm the exact application for your truck.
Is this a front or rear air spring?
It is a rear air suspension spring assembly, cataloged for the rear position of the listed RAM 3500 applications.
What does this air spring do?
It supports the rear suspension on cushioned air, helping maintain proper ride height and absorb road impacts in place of a failed original air spring.
Should I replace both rear air springs at once?
Arnott recommends replacing the rear air springs in pairs for balanced ride height and consistent handling, though this listing covers the A-3635 unit.
What are signs my rear air spring is failing?
Common signs include a sagging or uneven rear ride height, a rough or bottoming ride, audible air leaks, or a suspension warning. Diagnose the cause before replacing.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.