Monroe Shocks & Struts Suspension Shock Absorber P/N:65503

Keep every heavy-duty mile under control with the Monroe Magnum Front Suspension Shock Absorber 65503 — the first gas-charged, large-bore shock designed for the air spring and taper leaf suspensions on class 6-8 trucks and buses. It installs in the front position on the 1989-2019 Blue Bird All American FE, the 1989-2020 Blue Bird All American RE, and the 1999-2023 Freightliner MT55 — see the Buyer's Guide tab for engine-level fitment.

• Fast gas-charged response: a nitrogen gas charge maintains tire-to-road contact by reducing aeration and shock fade for the fast response heavy-duty truck suspensions demand.
• Consistent ride: all-weather fluid with special additives helps handle extreme temperatures and reduce oil breakdown, while the larger 2-3/8-in. reserve tube holds more fluid to improve performance (most applications).
• Exceptional handling: 10-stage valving tuned to each vehicle, paired with the larger 1-3/4-in. bore, provides more efficient damping control (most applications).
• Strong and durable: a shouldered bushing and a bonded bushing with sleeve help protect against bushing walkout, with arc welds up to 360° for durability.

A robust hydraulic lock-out helps prevent over-extension of the air bags, piston top-out and damage to the seal assembly (most applications), and a PTFE-coated bearing with a nitrocarburized piston rod reduces friction for longer service life. If a worn front shock is the cause of excessive body sway, harsh impacts or reduced tire contact, this Magnum unit replaces it. Backed by Monroe's 90-day Risk Free Ride Offer and Limited Commercial Warranty.