Monroe 58577 Shock Absorber and Coil Spring Assembly - Rear

Overview of Monroe Load Adjusting Shock Absorber 58577

The Monroe Load Adjusting Shock Absorber part number 58577 is designed for specific Chrysler and Dodge vehicles, including the 300, Charger, Imperial, Monaco, Newport, and New Yorker models. This suspension shock absorber and coil spring assembly offers precise load handling and improved ride control for these vehicles.

• Compressed length: 13.75 inches
• Extended length: 22.5 inches
• Travel length: 8.75 inches
• Metal dust shield included for enhanced durability
• Loop bushing lower mount with 11/16 inch bushing ID
• Loop bushing and sleeve upper mount with 1/2 inch sleeve ID
• No compressed or extended bumper stops

Monroe Load Adjusting Shock Absorber Product Line

The Load Adjusting Shock Absorber line by Monroe is engineered to provide adaptive suspension performance by adjusting to varying load conditions. This technology helps maintain vehicle stability and ride comfort under different driving and cargo scenarios. The 58577 model integrates these features into a robust shock absorber and coil spring assembly suitable for select Chrysler and Dodge vehicles.

Technical Description and Features

This Monroe shock absorber assembly features a compressed length of 13.75 inches and an extended length of 22.5 inches, allowing for a travel length of 8.75 inches. The metal dust shield protects internal components from debris and corrosion, extending the service life of the shock. The lower mounting uses a loop bushing mount with an 11/16 inch bushing inner diameter and 1.9/16 inch overall length, while the upper mounting includes a loop bushing and sleeve mount with a 1/2 inch sleeve inner diameter and 41.28 mm sleeve overall length. The absence of bumper stops and hydraulic lockouts indicates a design focused on smooth, consistent damping performance.

Compatible Vehicles and Applications

• Chrysler 300
• Chrysler Imperial
• Chrysler Monaco
• Chrysler Newport
• Chrysler New Yorker
• Dodge Charger

This shock absorber assembly is specifically designed to replace worn or damaged suspension components on these models, restoring proper ride height and handling characteristics.

Common Issues Addressed by Monroe 58577 Shock Absorber

• Reduced ride comfort due to worn shocks
• Excessive body roll or sway during cornering
• Uneven tire wear caused by poor suspension control
• Decreased vehicle stability under load
• Noise or vibration from damaged suspension components

Installation Notes and Tips

Installation of the Monroe Load Adjusting Shock Absorber 58577 requires proper alignment of the loop bushing mounts. Ensure the 11/16 inch lower bushing and 1/2 inch upper sleeve are correctly seated to avoid premature wear. The metal dust shield should be inspected for damage during installation. It is recommended to replace shocks in pairs to maintain balanced suspension performance.

Quality Assurance and Warranty

Monroe shock absorbers are manufactured to meet or exceed OEM specifications for fit, form, and function. The Load Adjusting Shock Absorber 58577 undergoes rigorous testing to ensure durability and consistent performance. Warranty coverage details should be confirmed with the manufacturer or authorized distributor.