KYB SM5334 Shock Mount - Rear Upper

KYB SM5334 Rear Upper Strut Mount

KYB SM5334 is a rear upper suspension shock absorber mount built for vehicles that need a direct OE-style replacement for worn vibration insulators. It helps restore quieter operation, steadier suspension response, and more consistent rear-end support on applications such as the Buick Lucerne, Cadillac DTS, and Pontiac Bonneville.

KYB Mount Components focus on application-specific fit and suspension control. The SM5334 uses rubber isolation and bearing support to reduce road harshness while helping maintain steering feel and front-end alignment characteristics where the mount design affects suspension geometry.

Key Features

• OE-quality replacement strut mount for rear upper applications
• Superior rubber helps reduce noise, vibration, and harshness
• Mount bearings support smoother steering response and alignment retention
• Matched-grade studs and nuts for proper component fitment
• Designed for application-specific suspension performance

Detailed Description

The KYB SM5334 is part of KYB’s Mount Components line, a product line focused on replacing worn suspension mounting parts with OE-quality components matched to the vehicle application. On rear upper mount locations, hardened or deteriorated insulators can transmit vibration into the cabin and reduce suspension refinement. This mount is engineered to address those issues with rubber isolation and bearing support that help the suspension operate more smoothly.

This part cross-references Monroe Shocks & Struts 902998 for the same application. It is a direct-fit option for rear upper mount service on 2006-2011 Buick Lucerne, 2006-2011 Cadillac DTS, 2000-2005 Buick LeSabre, 1997-2005 Buick Park Avenue, 2000-2005 Cadillac DeVille, 2000-2005 Pontiac Bonneville, 1998-2004 Cadillac Seville, and additional Oldsmobile Aurora and Buick Riviera applications listed below.

What It Helps Fix

• Rear suspension noise caused by worn vibration insulators
• Harshness transferred into the cabin from deteriorated mount rubber
• Loose or inconsistent rear upper mount support
• Steering feel issues related to worn mount bearings on applicable designs
• Alignment instability caused by degraded front-end support components

Installation Notes and Fitment

• Fits 2006-2011 Buick Lucerne, rear upper
• Fits 2006-2011 Cadillac DTS, rear upper, exc. electronic suspension
• Fits 2000-2005 Buick LeSabre, rear upper
• Fits 1997-2005 Buick Park Avenue, rear upper, exc. electronic adjustable suspension
• Fits 2000-2005 Cadillac DeVille, rear upper, not compatible with electronic suspension systems
• Fits 2000-2005 Pontiac Bonneville, rear upper
• Fits 1998-2004 Cadillac Seville, rear upper, exc. electronic adjustable suspension
• Fits 2001-2003 Oldsmobile Aurora, rear upper
• Fits 1998-1999 Oldsmobile Aurora, rear upper
• Fits 1995-1996 Oldsmobile Aurora, rear upper
• Fits 1995-1999 Buick Riviera, rear upper
• Fits 1997 Oldsmobile Aurora, rear upper, w/ self leveling rear

Verify suspension type before ordering, especially on Cadillac DTS, Cadillac DeVille, Cadillac Seville, Buick Park Avenue, and Oldsmobile Aurora models with electronic or self-leveling systems. Confirm the rear upper mounting location and compare the original part to KYB SM5334 before installation.

Quality Assurance

KYB is known for OE-quality suspension replacement parts, and the SM5334 is built to meet the needs of specific rear upper mount applications. The design emphasizes proper rubber isolation, bearing support, and application-matched fit for service work on Buick, Cadillac, Pontiac, and Oldsmobile vehicles.