KYB SM5548 Coil Spring Insulator - Front Lower

KYB Coil Spring Insulator SM5548

KYB SM5548 is a front lower coil spring insulator built to replace worn vibration isolators that can create noise and harshness in the suspension. It is designed for direct-fit service on select GM-platform SUVs and related models, including Chevrolet Trailblazer, GMC Envoy, and Buick Rainier applications.

Key Features

• High-quality replacement spring insulator for suspension service
• Reduces squeaks, rattles, and vibration noise from aged insulators
• Built to match or exceed original equipment design and quality
• OE-style replacement for front lower suspension mounting points
• Part number SM5548 for easy identification and ordering

Product Details

KYB Mount Components focuses on suspension support parts that restore proper isolation between the spring and its mounting surface. This spring seat and insulator helps absorb vibration at the front lower suspension location, improving ride refinement when the original rubber component has hardened, cracked, or compressed. This part cross-references General Motors service numbers 15757064 and 25820728 for the same application. SM5548 is a practical replacement choice for owners servicing Chevrolet Trailblazer, GMC Envoy, and Buick Rainier front suspension components.

What It Helps Fix

• Squeaks from worn spring contact points
• Rattles caused by deteriorated suspension isolators
• Vibration noise transmitted through the front lower spring mount
• Harsh ride feel from hardened or damaged insulator material
• Noise complaints after front suspension inspection or repair

Installation Notes and Fitment

Fits 2002-2009 Chevrolet Trailblazer, Front Lower.

Fits 2002-2009 GMC Envoy, Front Lower.

Fits 2005-2009 Saab 9-7x, Front Lower.

Fits 2003-2008 Isuzu Ascender, Front Lower.

Fits 2004-2007 Buick Rainier, Front Lower.

Fits 2003-2006 Chevrolet SSR, Front Lower.

Fits 2002-2006 Chevrolet Trailblazer EXT, Front Lower.

Fits 2002-2006 GMC Envoy XL, Front Lower.

Fits 2004-2005 GMC Envoy XUV, Front Lower.

Fits 2002-2004 Oldsmobile Bravada, Front Lower.

Verify the front lower suspension location and compare the original insulator before installation. Proper inspection of the spring seat, surrounding mount surfaces, and related suspension wear items helps ensure a correct repair.

Quality Assurance

KYB designs Mount Components to deliver OE-quality replacement performance for suspension service. SM5548 is engineered with the fit and material quality expected for restoring factory-style noise isolation and suspension support.