KYB KG5783 Shock Absorber - Front

KYB Gas-a-Just Front Shock for Jaguar XJ

The KYB Gas-a-Just KG5783 is a front suspension shock absorber built as an OE-style monotube replacement for select Jaguar applications. It is engineered for 1998-2003 Jaguar Vanden Plas, XJ8, and XJR front suspension service, with firmer response than a standard twin-tube design.

Key Features

• Adds up to 25% more damping performance than original equipment shocks
• Monotube construction separates gas and oil for fade-resistant operation and quick response
• High-pressure nitrogen gas chamber improves steering response and control
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Valving and components are tuned specifically for Jaguar XJ applications
• Supports vehicles that work, tow, or use larger, heavier tires and wheels
• Designed to help maintain the performance of electronic safety systems

Product Details

KYB Gas-a-Just shocks use two working chambers: an air-free hydraulic section for control and responsiveness, and a high-pressure gas section with a floating piston for consistent ride quality during normal driving. The KG5783 is a front shock absorber for Jaguar Vanden Plas, Jaguar XJ8, and Jaguar XJR models from 1998-2003, excluding vehicles with Adaptive Control Suspension. This part number, KG5783, is intended for drivers who want OE replacement geometry with added damping authority for heavier-duty use.

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

Common Problems This Shock Can Address

• Excessive front-end bounce over bumps and dips
• Reduced steering response during lane changes and cornering
• Shock fade during repeated suspension movement
• Oil leakage from worn piston rod seals
• Loss of control feel on heavier wheels and tires

Installation Notes

Compatible With 1998-2003 Jaguar Vanden Plas, front; 1998-2003 Jaguar XJ8, front; and 1998-2003 Jaguar XJR, front, except vehicles with Adaptive Control Suspension. Verify compressed length, extended length, stroke, and mount types before installation: compressed length 13.58 in, extended length 19.45 in, stroke 5.87 in, lower mount E2(10X32), upper mount S1. Inspect related suspension components and confirm the replacement matches the original mounting style.

Quality Assurance

KYB designs the Gas-a-Just line as an OE monotube replacement to restore original suspension capability with improved damping response. The KG5783 uses a high-pressure monotube layout and a chrome piston rod to support consistent operation and reduced seal wear in front suspension service.