KYB SM5745 Coil Spring Insulator - Front Lower

KYB SM5745 Coil Spring Insulator

KYB SM5745 is a coil spring insulator for front lower suspension applications on select Kia and Hyundai vehicles. It is built to replace hardened or worn spring seats that can transmit vibration, squeaks, and rattles into the cabin.

Part number SM5745 is part of KYB Mount Components, a product line focused on OE-style suspension replacement parts for specific vehicle applications. For drivers servicing a Kia Optima, Kia Magentis, or Hyundai Elantra front lower suspension, this insulator supports quieter operation and consistent spring seating.

Key Features

• OE-quality replacement coil spring insulator for the front lower position
• Reduces squeaks, rattles, and vibration noise from worn insulators
• Built to match or exceed original equipment design and quality
• Helps restore proper spring seating and suspension feel
• KYB Mount Components part number SM5745

Detailed Description

KYB SM5745 is engineered as a direct replacement spring insulator for select front lower suspension applications. When the original insulator hardens, cracks, or compresses over time, it can allow unwanted noise and vibration to travel through the suspension. This replacement part helps restore the isolation between the coil spring and its mounting surface, supporting smoother and quieter operation.

Compatible With 2007-2012 Kia Rondo, front lower; 2007-2011 Hyundai Elantra, front lower; 2007-2010 Kia Magentis, front lower; 2007-2010 Kia Optima, front lower; 2006 Kia Magentis, front lower, New Style; and 2006 Kia Optima, front lower, New Style. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Squeaks from worn spring contact points
• Rattles caused by deteriorated suspension insulators
• Vibration noise transferred through the front lower suspension
• Poor spring isolation from hardened rubber components
• Noise complaints after suspension service on Kia and Hyundai models

Installation Notes and Tips

Install SM5745 in the front lower suspension position only where listed in the fitment data. Inspect the surrounding spring seat, strut, and mounting surfaces for wear or damage before installation. Proper alignment of the coil spring and insulator is important for correct seating and noise control.

Quality Assurance

KYB positions Mount Components as OE-quality replacement parts designed for specific applications. SM5745 is built with the design and quality expected for original-equipment-style suspension service on Kia and Hyundai vehicles.