KYB SM5631 Coil Spring Insulator - Front Lower

KYB SM5631 Coil Spring Insulator

KYB SM5631 is a front lower coil spring insulator built for OE-style suspension service. It helps restore quieter operation by replacing worn spring seats that can harden, crack, and transmit vibration into the chassis.

Designed for select Chrysler, Dodge, and Mitsubishi applications, this KYB Mount Components part supports a cleaner suspension feel on vehicles such as the Chrysler Sebring, Dodge Stratus, and Mitsubishi Eclipse.

Key Features

• OE-quality replacement spring insulator for front lower suspension locations
• Reduces squeaks, rattles, and vibration noise from aged insulators
• Built to match or exceed original equipment design and quality
• Part number SM5631 for accurate ordering and fitment lookup
• Part of KYB Mount Components for suspension service applications

Product Details

KYB Mount Components focuses on replacement suspension parts that address noise and vibration at the spring seat. The SM5631 coil spring insulator is engineered for applications where the original lower spring seat insulator has deteriorated, helping maintain proper spring contact and suspension refinement. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Fits 2001-2005 Chrysler Sebring, front lower. Fits 2001-2005 Dodge Stratus, front lower. Fits 2000-2005 Mitsubishi Eclipse, front lower. Fits 1992-2003 Mitsubishi Diamante, front lower. Fits 1999-2003 Mitsubishi Galant, front lower; not compatible with adjustable suspensions.

Common Issues Addressed

• Squeaking from a worn lower spring seat insulator
• Rattling or clunking noise at the front suspension
• Vibration transfer caused by hardened rubber components
• Loss of OE-like spring isolation at the lower mount point
• Noise complaints after suspension inspection or service

Installation Notes

Install SM5631 at the front lower spring seat location only on the listed vehicles. Verify suspension type before ordering, especially on 1999-2003 Mitsubishi Galant models, which are not compatible with adjustable suspensions. Inspect the surrounding mount components, spring seat surfaces, and related hardware for wear before reassembly.

Quality Assurance

KYB designs Mount Components to provide OE-quality replacement parts for suspension service. The SM5631 is built to the same application-specific standards expected from KYB spring seats and insulators, with a focus on fit, noise reduction, and suspension performance.