KYB Gas-a-Just Monotube Front Shock Absorber KG4509 for Dodge Dart and Plymouth Models

The Gas-a-just monotube shock absorber is available as an OE monotube replacement to restore your vehicles original capabilities. The KYB Gas-a-just has two separate working chambers: An air-free hydraulic piston and valve area for responsiveness and control, and a second high-pressure nitrogen gas area with a floating piston that provides a comfortable ride during normal driving and adds instant performance on demand.

• Electronic safety systems depend on the suspension, brakes and tires operating as the vehicle manufacturer intended. The KYB Gas-a-just helps keep Electronic Safety Systems performing as designed.

Restore responsive handling and original ride control with the KYB Gas-a-Just monotube shock absorber, part number KG4509. Designed as an original-equipment-style replacement, this automotive shock absorber helps support confident steering, improved suspension control, and consistent performance on compatible Dodge and Plymouth applications.

The KYB Gas-a-Just uses two separate working chambers. An air-free hydraulic piston and valve area provides responsive damping and control, while a high-pressure nitrogen gas chamber with a floating piston helps maintain a comfortable ride during normal driving and delivers additional performance when driving conditions demand it. This monotube design helps the shock absorber react quickly to changes in road and vehicle movement.

• Electronic safety systems depend on the suspension, brakes, and tires operating as the vehicle manufacturer intended. The KYB Gas-a-Just helps keep electronic safety systems performing as designed.

Part number KG4509 is intended for front suspension applications on select Dodge Dart and Plymouth models, including the 1962 Dodge Dart, 1960-1962 Plymouth Valiant, 1964-1969 Plymouth Barracuda, and Plymouth Duster applications identified by the manufacturer. Always verify vehicle year, make, model, trim, and suspension configuration before ordering.

What's Included

• One KYB Gas-a-Just front monotube shock absorber

Key Product Specifications and Technical Data

• Brand: KYB
• Part Number: KG4509
• Product Type: Automotive shock absorber
• Design: Monotube gas-charged construction
• Installation Position: Front
• Working Gas: High-pressure nitrogen
• Replacement Type: Original-equipment-style replacement
• Quantity: One shock absorber

Features:

• Monotube Construction: Uses separate hydraulic and high-pressure nitrogen chambers for responsive damping and consistent suspension control.
• Original-Equipment-Style Replacement: Helps restore the vehicle's intended ride quality, handling, and suspension performance.
• Floating Piston Design: Separates the nitrogen gas and hydraulic fluid to help maintain reliable damping response.
• Electronic Safety System Support: Helps the suspension perform as intended so compatible electronic safety systems can operate properly.

Fitments:
1960 Plymouth Valiant 200
1960 Plymouth Valiant Base
1961 Plymouth Valiant 200
1961 Plymouth Valiant Base
1962 Dodge Dart 330
1962 Dodge Dart 440
1962 Dodge Dart Base
1962 Plymouth Valiant 200
1962 Plymouth Valiant Base
1962 Plymouth Valiant Signet
1963 Dodge Dart 270
1963 Dodge Dart Base
1963 Dodge Dart GT
1963 Plymouth Valiant 200
1963 Plymouth Valiant Base
1963 Plymouth Valiant Signet
1964 Dodge Dart 270
1964 Dodge Dart Base
1964 Dodge Dart GTS
1964 Plymouth Barracuda Base
1964 Plymouth Valiant 200
1964 Plymouth Valiant Base
1964 Plymouth Valiant Signet
1965 Dodge Dart 270
1965 Dodge Dart Base
1965 Dodge Dart GT
1965 Plymouth Barracuda Base
1965 Plymouth Valiant Base
1965 Plymouth Valiant Signet
1966 Dodge Dart 270
1966 Dodge Dart Base
1966 Dodge Dart GT
1966 Plymouth Barracuda Base
1966 Plymouth Valiant 200
1966 Plymouth Valiant Base
1966 Plymouth Valiant Signet
1967 Dodge Dart 270
1967 Dodge Dart Base
1967 Dodge Dart GT
1967 Plymouth Barracuda Base
1967 Plymouth Valiant Base
1967 Plymouth Valiant Signet
1968 Dodge Dart 270
1968 Dodge Dart Base
1968 Dodge Dart GT
1968 Dodge Dart GTS
1968 Plymouth Barracuda Base
1968 Plymouth Valiant 100
1968 Plymouth Valiant Base
1968 Plymouth Valiant Signet
1969 Dodge Dart Base
1969 Dodge Dart Custom
1969 Dodge Dart GT
1969 Dodge Dart GTS
1969 Dodge Dart Swinger
1969 Dodge Dart Swinger 340
1969 Plymouth Barracuda Base
1969 Plymouth Valiant 100
1969 Plymouth Valiant Base
1969 Plymouth Valiant Signet
1970 Dodge Dart Base
1970 Dodge Dart Custom
1970 Dodge Dart Swinger
1970 Dodge Dart Swinger 340
1970 Plymouth Duster 340
1970 Plymouth Duster Base
1970 Plymouth Valiant Base
1971 Dodge Dart Base
1971 Dodge Dart Custom
1971 Dodge Dart Demon
1971 Dodge Dart Demon 340
1971 Dodge Dart Special
1971 Dodge Dart Swinger
1971 Plymouth Duster 340
1971 Plymouth Duster Base
1971 Plymouth Scamp Base
1971 Plymouth Valiant Base
1972 Dodge Dart Base
1972 Dodge Dart Custom
1972 Dodge Dart Demon
1972 Dodge Dart Demon 340
1972 Dodge Dart Special
1972 Dodge Dart Swinger
1972 Plymouth Duster 340
1972 Plymouth Duster Base
1972 Plymouth Scamp Base
1972 Plymouth Valiant Base
1973 Dodge Dart Base
1973 Dodge Dart Custom
1973 Dodge Dart Special
1973 Dodge Dart Sport
1973 Dodge Dart Sport 340
1973 Dodge Dart Swinger
1973 Plymouth Duster 340
1973 Plymouth Duster Base
1973 Plymouth Scamp Base
1973 Plymouth Valiant Base
1974 Dodge Dart Base
1974 Dodge Dart Custom
1974 Dodge Dart Special
1974 Dodge Dart Special Edition
1974 Dodge Dart Sport
1974 Dodge Dart Sport 360
1974 Dodge Dart Swinger
1974 Plymouth Duster 360
1974 Plymouth Duster Base
1974 Plymouth Scamp Base
1974 Plymouth Valiant Base
1974 Plymouth Valiant Brougham
1975 Dodge Dart Base
1975 Dodge Dart Custom
1975 Dodge Dart Special Edition
1975 Dodge Dart Sport
1975 Dodge Dart Sport 360
1975 Dodge Dart Swinger
1975 Dodge Dart Swinger Special
1975 Plymouth Duster 360
1975 Plymouth Duster Base
1975 Plymouth Duster Custom
1975 Plymouth Scamp Base
1975 Plymouth Scamp Brougham
1975 Plymouth Scamp Special
1975 Plymouth Valiant Base
1975 Plymouth Valiant Brougham
1975 Plymouth Valiant Custom
1975 Plymouth Valiant Scamp
1976 Dodge Dart Base
1976 Dodge Dart Sport
1976 Dodge Dart Swinger
1976 Dodge Dart Swinger Special
1976 Plymouth Duster Sport
1976 Plymouth Scamp Base
1976 Plymouth Scamp Special
1976 Plymouth Valiant Base

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1