KYB KG4507 Suspension Shock Absorber - Front

KYB Gas-a-Just Front Shock Absorber

The KYB Gas-a-Just KG4507 is a monotube suspension shock absorber built to restore OE-style control on classic Chrysler and Dodge applications. It uses separate hydraulic and high-pressure gas chambers for responsive damping, steady ride quality, and quicker steering response when the vehicle is loaded or driven harder.

Compatible with 1965-1973 Chrysler New Yorker, front; 1965-1973 Chrysler Newport, front; 1965-1973 Chrysler Town & Country, front; 1965-1973 Dodge Monaco, front; 1965-1971 Chrysler 300, front; and 1967-1973 Chrysler Imperial, front. This part number, KG4507, is a direct-fit OE-style replacement for front suspension service on these vehicles.

Key Features

• Monotube shock design with separate gas and oil chambers for consistent damping
• Up to 25% more damping performance than original equipment shocks
• Higher gas pressure for quicker steering response and improved control
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Valving and components tailored for classic cars
• Additional damping for vehicles that work, tow, or run larger, heavier tires and wheels
• Supports proper operation of electronic safety systems by helping the suspension perform as engineered

Product Details

KYB Gas-a-Just shocks are designed as OE monotube replacements for vehicles that need firmer response without sacrificing normal ride comfort. The KG4507 uses an air-free hydraulic working area for control and a high-pressure nitrogen gas section with a floating piston for fade-resistant operation and immediate response. For Chrysler Imperial, Chrysler New Yorker, Chrysler Newport, Chrysler Town & Country, Chrysler 300, and Dodge Monaco front suspension service, this design helps maintain predictable handling and road feel.

This part cross-references Monroe Shocks & Struts 5811 for the same application.

What It Helps Address

• Excessive front-end bounce after bumps
• Reduced steering response during braking or lane changes
• Shock fade from heat buildup during repeated driving demands
• Fluid leakage caused by seal wear
• Loss of control on classic cars with heavier wheels, tires, or towing use

Installation Notes

Fits 1965-1973 Chrysler New Yorker, front; 1965-1973 Chrysler Newport, front; 1965-1973 Chrysler Town & Country, front; 1965-1973 Dodge Monaco, front; 1965-1971 Chrysler 300, front; and 1967-1973 Chrysler Imperial, front. Follow the manufacturer’s instructions for vehicles that require replacement of the suspension strut and coil spring assembly. Verify mount style and dimensions before installation: compressed length 8.15 in, extended length 12.28 in, stroke length 4.13 in, lower mount type E2(11.1x38), upper mount type S1.

Quality Assurance

KYB designs the Gas-a-Just line as an OE-style monotube replacement for classic vehicle suspension service. The KG4507 is engineered to restore original handling characteristics while adding the damping response expected from the Gas-a-Just product line.