KYB KG5418 Shock Absorber - Rear

KYB Gas-a-Just Rear Shock for Dodge Vans

The KYB Gas-a-Just KG5418 is a rear monotube shock absorber built for Dodge and Plymouth vans that need firmer control and consistent damping. It is designed for vehicles that work, tow, or run larger tires and wheels, including Dodge Ram 1500 Van, Ram 2500 Van, and Ram 3500 Van rear applications.

Gas-a-Just is KYB’s monotube shock line, using separate gas and oil chambers for quick response and stable performance. The KG5418 is engineered to add control without sacrificing normal ride comfort during everyday driving.

Key Features

• Up to 25% more damping performance than original equipment shocks
• Monotube design separates gas and oil for fade-resistant operation
• High-pressure nitrogen charge delivers fast response and improved steering feel
• Triple chrome plated piston rod helps reduce seal wear
• Valving and components are tuned for Dodge van rear suspension applications
• Dust cover included
• Part number: KG5418

Detailed Product Overview

The KYB Gas-a-Just KG5418 uses an air-free hydraulic working area for responsiveness and a high-pressure gas chamber with a floating piston for added control when load, road input, or tire size increases. That design helps maintain consistent damping where twin-tube shocks can lose performance from aeration. For rear suspension service on Dodge B-series vans, Ram vans, and Plymouth PB models, this shock is built to restore control and sharpen body motion management. The KG5418 is also a direct search match for KYB KG5418 and KYB Gas-a-Just KG5418 rear shock absorber applications.

This part cross-references Monroe Shocks & Struts (e.g., 911091) for the same application.

What It Helps Address

• Excessive rear bounce over bumps and expansion joints
• Reduced control when towing or carrying heavier loads
• Soft or delayed rear suspension response
• Shock fade from heat and aeration during repeated use
• Steering and stability issues caused by worn rear dampers

Installation Notes and Fitment

Compatible with rear suspension applications on 1975-2003 Dodge and Plymouth vans. Fits 1999-2003 Dodge Ram 1500 Van, rear; Fits 1999-2003 Dodge Ram 2500 Van, rear; Fits 1999-2003 Dodge Ram 3500 Van, rear; Fits 1995-1998 Dodge B1500, rear; Fits 1995-1998 Dodge B2500, rear; Fits 1995-1998 Dodge B3500, rear; Fits 1981-1994 Dodge B150, rear; Fits 1981-1994 Dodge B250, rear; Fits 1981-1994 Dodge B350, rear; Fits 1981-1983 Plymouth PB150, rear; Fits 1981-1983 Plymouth PB250, rear; Fits 1981-1983 Plymouth PB350, rear; Fits 1975-1980 Dodge B100, rear; Fits 1975-1980 Dodge B200, rear; Fits 1975-1980 Dodge B300, rear.

Verify compressed length, extended length, and mount style before installation: compressed length 13.23, extended length 21.1, stroke length 7.87, lower mount type E2(12.8X41.3), upper mount type E1-L/E(17.5). Professional installation is recommended for suspension service, and the shock should be checked for proper alignment and fastener torque after installation.

Quality Assurance

KYB designs the Gas-a-Just line for OE-style suspension control with monotube construction and application-specific valving. The KG5418 is built to support consistent damping performance in demanding rear van applications, including Dodge Ram 1500 Van, Ram 2500 Van, and Ram 3500 Van service use.