KYB 5510045 Suspension Strut - Front

KYB Gas-a-Just Front Strut for Expedition and Navigator

The KYB Gas-a-just 5510045 is a monotube suspension strut built as an OE-style replacement for front suspension service. It uses separate hydraulic and high-pressure gas chambers to deliver responsive damping, stable control, and a ride that stays composed during everyday driving.

Key Features

• Monotube suspension strut for front applications
• Air-free hydraulic piston and valve area for direct response
• High-pressure nitrogen gas chamber with floating piston
• Internal rebound spring included
• Compressed length: 16.1 in.
• Extended length: 20 in.
• Stroke length: 3.9 in.
• Lower mount type: E3 (88.75x117x13)
• Upper mount type: 12x1.25

Product Details

KYB Gas-a-just 5510045 is engineered for drivers who want front suspension control that matches the original monotube layout. The design separates the hydraulic working area from the nitrogen gas chamber, helping the strut react quickly to road inputs while maintaining a controlled ride under changing conditions. This part number is a direct-fit front strut for select Ford Expedition and Lincoln Navigator models, including 2022-2024 Ford Expedition front applications except Electronic Suspension, Sport Suspension, Off Road Suspension, and Self Leveling Suspension, plus 2018-2021 Ford Expedition front applications except Electronic and Load Leveling Suspension, and 2018-2020 Lincoln Navigator front applications except Electronic and Load Leveling Suspension. KYB 5510045 is also referenced by OE-style interchange numbers for the same application.

Compatible With 2022-2024 Ford Expedition, front; 2018-2021 Ford Expedition, front; and 2018-2020 Lincoln Navigator, front. This part number is commonly searched as KYB 5510045 for front suspension replacement on Ford Expedition and Lincoln Navigator models.

Common Problems This Strut Can Address

• Excessive front-end bounce over uneven pavement
• Reduced steering response during braking and cornering
• Worn or leaking original front strut assembly
• Harsh or inconsistent ride quality from aging suspension components
• Front suspension instability on higher-mileage Expedition or Navigator vehicles

Installation Notes and Tips

Verify suspension type before ordering, since this strut excludes Electronic Suspension, Sport Suspension, Off Road Suspension, and Self Leveling Suspension on the listed Ford Expedition applications, and excludes Electronic and Load Leveling Suspension on the listed Lincoln Navigator applications. Confirm compressed length, extended length, and mount dimensions against the original part before installation. Professional installation and a full front-end inspection are recommended whenever replacing a strut.

Quality Assurance

KYB is known for OE-focused suspension engineering, and the Gas-a-just line is built as a monotube replacement to restore original vehicle capability with controlled damping response.