KYB KG6413 Shock Absorber - Front

KYB Gas-a-Just Front Shock Absorber

The KYB Gas-a-just KG6413 is a monotube suspension shock absorber built for front-end control on heavy-duty Ford applications. It is engineered for the 1992-2000 Ford E-350 Econoline, E-350 Econoline Club Wagon, and 1999-2000 Ford E-350 Super Duty front suspension, including motorhome conversion applications listed in the fitment data.

Gas-a-Just Product Line

KYB Gas-a-just shocks use a monotube design with separate gas and oil chambers for quick response and consistent damping. This line is aimed at vehicles that work harder than standard passenger-duty applications, including trucks, tow vehicles, and setups with larger or heavier tires and wheels.

Key Features

• Up to 25% more damping performance than original equipment shocks
• Monotube construction separates gas and oil for fade-resistant operation
• High-pressure nitrogen gas helps deliver immediate response and improved steering feel
• Valving and components are designed for heavy-duty truck use
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Dust cover included
• Supports electronic safety systems by helping the suspension operate as designed

Detailed Description

KYB KG6413 is designed for front suspension service on Ford E-350 platform vehicles where added control and consistent damping matter. The monotube layout gives the shock absorber an air-free hydraulic working area for responsiveness, while the high-pressure gas chamber helps maintain performance under load and during repeated suspension movement. With a compressed length of 10.43 inches, extended length of 14.92 inches, and 4.49 inches of stroke, this shock is built to match the listed front applications. This part cross-references Monroe Shocks & Struts 555031 for the same application.

What It Helps Address

• Excessive front-end bounce on Ford E-350 Econoline and E-350 Super Duty models
• Reduced steering response during braking, cornering, or load changes
• Shock fade from repeated suspension movement and heat buildup
• Wear concerns related to heavier tires, wheels, or work-duty use
• Fluid leakage caused by seal wear on aging front shocks

Installation Notes and Tips

Verify upper mount type S1 and lower mount type E1 before installation. Confirm front-position fitment against the vehicle listing for 1992-1998 Ford E-350 Econoline, 1992-2000 Ford E-350 Econoline Club Wagon, and 1999-2000 Ford E-350 Super Duty. Check compressed and extended length measurements against the original shock to ensure proper suspension travel and clearance. The dust cover is included; internal rebound spring and B-stop are not included.

Quality Assurance

KYB designs the Gas-a-just line for consistent damping performance and durability in demanding truck applications. Part number KG6413 is built to the listed specifications for front suspension service on the confirmed Ford E-350 fitments.