Monroe 15663 Suspension Shock Absorber Assembly - Rear

Rear Shock & Mount Assembly for Select GM Models

Monroe OESpectrum shock & mount assembly 15663 is a rear suspension shock absorber assembly built for select Chevrolet applications. It combines the shock, upper mount, compression bumper, and dirt shield in one pre-assembled unit to streamline rear suspension service on the Chevrolet Cruze, Chevrolet Cruze Limited, and Chevrolet Volt.

Engineered for controlled ride response, this Monroe shock assembly uses Twin Technology Active Control System to reduce noise, vibration, and harshness while maintaining consistent damping under everyday driving conditions.

Key Features

• Monroe OESpectrum shock & mount assembly, part number 15663
• Pre-assembled rear shock absorber assembly for faster service
• Includes upper mount, shock, compression bumper, and dirt shield
• Twin Technology Active Control System helps reduce NVH
• Premium-grade suspension replacement for rear ride control
• Lower mount: loop bushing and sleeve mount with 14mm sleeve ID and 1 9/16" sleeve OAL
• Upper mount: stem mount with 1 3/16" stem length and M10 thread pitch

Detailed Description

Monroe 15663 is a rear suspension shock absorber assembly designed for direct replacement service on 2011-2015 Chevrolet Cruze, 2016 Chevrolet Cruze Limited, and 2011-2015 Chevrolet Volt rear applications. The assembly is built around a premium shock body with a 1.64-inch body diameter, 15.8-inch compressed length, 25.64-inch extended length, and 9.64 inches of travel for rear suspension control.

This part cross-references Monroe Shocks & Struts 15663 for the same application. It is also listed as an interchange for OE numbers 13345954 and 13409597. For shoppers searching for a rear shock absorber for 2011-2015 Chevrolet Cruze, a rear shock and mount assembly for 2011-2015 Chevrolet Volt, or a rear suspension shock for 2016 Chevrolet Cruze Limited, this assembly matches those vehicle-specific applications.

What It Helps Address

• Rear suspension noise from worn shock mounts or internal shock wear
• Excessive bouncing after bumps or uneven road surfaces
• Reduced rear-end stability during normal driving
• Harsh ride feel caused by degraded damping performance
• Dust and debris intrusion around the rear shock assembly

Installation Notes and Tips

Verify rear position and vehicle application before installation. This assembly uses a stem-style upper mount and a loop bushing lower mount, so confirm the mounting points match the original equipment layout on the Chevrolet Cruze, Chevrolet Cruze Limited, or Chevrolet Volt. Inspect surrounding suspension components, including bushings and mounting points, before completing the repair.

Quality Assurance

Monroe OESpectrum is a premium suspension line focused on OE-style ride control and reduced NVH. The pre-assembled design supports a cleaner replacement process for rear shock service on select GM compact and electric vehicle platforms.