Monroe 65408 Suspension Shock Absorber - Front or Rear

Heavy-Duty Shock Absorber

The Monroe Magnum Shock Absorber 65408 is built for Class 6-8 truck suspension systems that use air spring and taper leaf designs. Its gas-charged construction and large-bore layout deliver fast response and steady control under high-mileage, severe-duty operation.

• Gas-charged shock absorber for heavy truck suspension control
• Large-bore design for demanding commercial use
• Nitrogen gas charge for quick suspension response
• Metal dust shield helps protect the shock body
• Extended hydraulic lockout adds control at full extension

Fitment and Application

Compatible with Freightliner FLD120, rear, 1988-2011; Freightliner M2 112, front, 2003-2010; Freightliner FLD112, rear, 1991-2007; Freightliner FLB, rear, 1994-1999 and 2002; Freightliner FLC112, rear, 1985-2001; Freightliner FLC120, rear, 1981-1988 and 1991. Fits Freightliner FLD120, rear, and Freightliner M2 112, front, with the listed suspension and chassis notes in the fitment data.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Excessive bounce in heavy-duty suspension systems
• Reduced damping control under severe service
• Harsh response from worn commercial truck shocks
• Loss of stability in air spring suspension setups
• Inconsistent ride control at high mileage

Installation Notes

Verify compressed length, extended length, and mounting style before installation. This shock uses a stem upper mount and a loop bushing and sleeve lower mount, so matching the existing hardware layout is important. Confirm the suspension type and OE reference numbers listed in the fitment data before ordering.

Quality Assurance

Monroe Magnum shocks are engineered for commercial-duty suspension demands and are specified for use on heavy truck applications where consistent damping is required.