Monroe 37164 Shock Absorber - Rear

Monroe OESpectrum Rear Shock for Heavy-Duty Trucks

Monroe OESpectrum Light Truck Shock Absorber 37164 is built for rear suspension service on select Chevrolet Silverado and GMC Sierra heavy-duty applications. It is designed to restore factory-style drivability while improving handling control and reducing noise, vibration, and harshness.

Key Features

• OESpectrum light truck shock absorber for rear suspension use
• Compressed length: 16 in.; extended length: 26 in.; travel length: 10 in.
• Metal dust shield included for added protection
• Extended bumper stop included; compressed bumper stop not included
• Upper and lower mounting code: LS47
• Loop bushing and sleeve mount with 9/16 in. sleeve ID x 1.5/8 in. sleeve OAL
• Part number 37164 for direct catalog lookup

Product Details

Monroe OESpectrum 37164 is a rear suspension shock absorber engineered for stock-component replacement on select Chevrolet Silverado 2500 HD, Silverado 1500 HD, Silverado 2500, GMC Sierra 2500 HD, Sierra 1500 HD, and Sierra 2500 models. The OESpectrum line focuses on restoring original ride characteristics with controlled damping that helps reduce harshness over rough pavement and towing loads. This part cross-references KYB 344385 for the same application.

Compatible With 2001-2010 Chevrolet Silverado 2500 HD, rear; 2001-2010 GMC Sierra 2500 HD, rear; 2007 Chevrolet Silverado 1500 HD Classic, rear; 2007 Chevrolet Silverado 2500 HD Classic, rear; 2007 GMC Sierra 1500 HD Classic, rear; 2007 GMC Sierra 2500 HD Classic, rear; 2005-2006 Chevrolet Silverado 1500 HD, rear; 2001-2003 Chevrolet Silverado 1500 HD, rear; 2005-2006 GMC Sierra 1500 HD, rear; 2001-2003 GMC Sierra 1500 HD, rear; 1999-2004 Chevrolet Silverado 2500, rear; 1999-2004 GMC Sierra 2500, rear.

What It Helps Address

• Rear-end bounce or unsettled ride on worn shocks
• Excessive vibration and harshness over uneven roads
• Reduced control during load carrying or towing
• Loss of factory-like damping response
• Noise from aging suspension components

Installation Notes and Tips

Verify rear fitment by year, make, model, and suspension configuration before ordering. This shock uses loop bushing and sleeve mounts at both ends, so confirm sleeve dimensions and mounting code LS47 match the vehicle. It is listed for vehicles without Electronic Adjustable Suspension where noted, and for 1999-2004 Silverado 2500 and Sierra 2500 applications except 4-wheel steering.

Quality Assurance

Monroe designs the OESpectrum Light Truck Shock Absorber line to meet OE-style ride and handling expectations for light truck applications. The 37164 is built as a suspension shock absorber for direct replacement use on the listed rear applications.