KYB KG4740 Shock Absorber - Rear

KYB Gas-a-just Rear Shock for Mercedes-Benz

The KYB Gas-a-just KG4740 is a rear suspension shock absorber built as an OE-style monotube replacement for select Mercedes-Benz C-Class and CLK models. It is engineered to restore control, steering response, and ride consistency for vehicles that work harder, tow, or run larger wheels and tires.

Key Features

• Monotube design separates gas and oil for consistent damping and quick response
• Up to 25% more damping performance than original equipment shocks
• High-pressure nitrogen gas helps reduce fade during repeated suspension movement
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Designed specifically for Mercedes-Benz C-Class rear suspension applications
• Includes dust cover, B-stop, and R-stop

Product Details

The KYB Gas-a-just line is designed for drivers who want firmer control than a standard OE twin-tube shock can provide. Part number KG4740 uses a high-pressure monotube layout with separate working chambers for hydraulic response and gas pressure, helping the rear suspension react quickly and maintain stability under load. This makes it a practical choice for Mercedes-Benz CLK430, CLK320, C230, C280, and C220 rear shock replacement service where original ride quality and handling balance need to be restored.

This part cross-references Monroe Shocks & Struts (e.g., 39014) for the same application.

What It Helps Address

• Excessive rear-end bounce after bumps or dips
• Reduced steering response caused by worn rear shocks
• Fluid leakage from aging shock absorbers
• Fade or inconsistent damping during repeated suspension travel
• Loss of control on Mercedes-Benz C-Class and CLK rear suspension systems

Installation Notes

Fits 1999-2003 Mercedes-Benz CLK430, rear; 1998-2002 Mercedes-Benz CLK320, rear; 1997-2000 Mercedes-Benz C230, rear; 1994-2000 Mercedes-Benz C280, rear; and 1994-1996 Mercedes-Benz C220, rear. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions where noted. Verify rear suspension configuration before installation, especially on C230 and C280 applications listed without sport suspension and excluding self-leveling setups.

Quality Assurance

KYB designs the Gas-a-just series as an OE monotube replacement with application-specific valving and components for Mercedes-Benz C-Class rear suspension service. Part number KG4740 is built to support consistent damping performance and maintain the vehicle’s original suspension behavior.