Monroe 58578 Shock Absorber and Coil Spring Assembly - Rear

Monroe Load Adjusting Shock Absorber 58578 Overview

The Monroe Load Adjusting Shock Absorber part number 58578 is engineered to provide reliable suspension performance for a range of Chevrolet and GMC trucks and SUVs. Designed specifically for models such as the Chevrolet Blazer, C10, and GMC Jimmy, this shock absorber assembly helps maintain vehicle stability and ride comfort under varying load conditions.

• Compressed length: 14 inches
• Extended length: 22.875 inches
• Travel length: 8.875 inches
• Includes metal dust shield for enhanced durability
• Lower mounting type: Loop bushing & sleeve mount (9/16" sleeve ID x 1.5/8" sleeve OAL)
• Upper mounting type: L1/cp5
• Does not include compressed or extended bumper stops

Detailed Features and Specifications

This Monroe Load Adjusting Shock Absorber 58578 is a suspension shock absorber and coil spring assembly designed to fit a wide range of Chevrolet and GMC vehicles, including the C10, C20, C1500, K5 Blazer, and R2500 Suburban models. The shock absorber features a compressed length of 14 inches and an extended length of 22.875 inches, providing a travel length of 8.875 inches to accommodate suspension movement effectively. The metal dust shield protects the shock from debris and environmental damage, extending the service life of the component. The lower mounting uses a loop bushing and sleeve mount with precise dimensions (9/16" sleeve ID x 1.5/8" sleeve OAL), while the upper mounting employs the L1/cp5 type, ensuring proper fitment and secure installation.

About the Load Adjusting Shock Absorber Line

The Monroe Load Adjusting Shock Absorber line is designed to adapt to varying load conditions, providing consistent damping performance whether the vehicle is lightly loaded or carrying heavy cargo. This product line focuses on maintaining vehicle control and ride quality by automatically adjusting to changes in load, making it suitable for trucks and SUVs that frequently experience different payloads. Part number 58578 is a representative component of this line, tailored for Chevrolet and GMC full-size trucks and SUVs.

Common Applications and Problem Solving

• Improves ride stability on Chevrolet Blazer and GMC Jimmy models under heavy load
• Reduces suspension sag and bottoming on C10 and C1500 trucks
• Minimizes excessive body roll during cornering on K5 Blazer and R2500 Suburban
• Enhances overall handling and control for loaded GMC C2500 and C3500 vehicles
• Protects suspension components by absorbing road shocks and vibrations

Installation Notes and Tips

• Verify compatibility with your specific Chevrolet or GMC model and year before installation
• Ensure proper alignment of upper and lower mounting points (L1/cp5 upper, loop bushing & sleeve lower)
• Inspect mounting hardware and replace if worn or damaged during installation
• Use appropriate tools to avoid damage to the metal dust shield and mounting bushings
• Follow vehicle manufacturer torque specifications for mounting bolts

Quality Assurance and Warranty

Monroe Load Adjusting Shock Absorber part number 58578 is manufactured to meet or exceed OEM standards for durability and performance. The inclusion of a metal dust shield enhances protection against environmental factors, contributing to long service life. While specific warranty details may vary, Monroe typically offers coverage against defects in materials and workmanship. Consult product documentation or Monroe directly for exact warranty terms.