FCS 346456 Shock Absorber - Rear

Rear Suspension Shock Absorber for Kia and Hyundai

FCS 346456 is a rear suspension shock absorber built for select Kia and Hyundai applications. With a compressed length of 18.11 inches, an extended length of 25.43 inches, and a 7.32-inch stroke, it matches the travel range needed for rear suspension control on covered vehicles.

Compatible With 2015-2020 Hyundai Sonata rear, 2016-2020 Kia Optima rear, 2017-2020 Kia Cadenza rear, and 2017 Kia Optima rear gas applications. This part number, 346456, is a direct fitment-focused option for drivers searching for a rear shock absorber for Kia Optima, Kia Cadenza, or Hyundai Sonata models.

Key Features

• Rear suspension shock absorber for covered Kia and Hyundai vehicles
• Compressed length: 18.11 inches
• Extended length: 25.43 inches
• Stroke length: 7.32 inches
• Fits rear suspension applications listed for gas-equipped Sonata and Optima models
• FCS part number 346456 for fitment-based replacement searches

Detailed Product Overview

FCS 346456 is specified for rear suspension use and should be matched to the vehicle’s original mounting and travel requirements before installation. The listed dimensions help confirm proper suspension movement, which is important when replacing a worn rear shock absorber on a Kia Optima, Kia Cadenza, or Hyundai Sonata. The FCS brand line identifies this as an FCS suspension component within the shocks and struts category, making it a straightforward replacement choice for rear ride control service.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues This Part Addresses

• Excessive rear bounce after bumps
• Reduced damping control from a worn shock absorber
• Rear-end instability during braking or cornering
• Uneven ride quality at the back of the vehicle
• Noisy or loose-feeling rear suspension operation

Installation Notes and Tips

Verify rear fitment by year, make, model, and gas application before installation. Compare the compressed length, extended length, and stroke length to the removed unit to confirm suspension travel and mounting compatibility. Inspect surrounding rear suspension components for wear during replacement, and follow the vehicle service procedure for torque specifications and alignment-related checks.

Quality Assurance

FCS suspension components are cataloged for specific vehicle applications, and this part is identified by exact fitment data for the listed Kia and Hyundai models. Use the confirmed application details and dimensional specifications to support accurate replacement selection for rear shock service.