Keep every bump under control with the KYB Gas-a-just High Pressure Monotube Gas Shock (MPN 5550006), a rear suspension shock absorber built as a direct-fit replacement for the 2014-2018 RAM 3500. Its components and valving were designed specifically for Ram 3500s that work, tow, and run larger, heavier tires and wheels, adding damping over the OE design.
- Monotube high-pressure design: Separates the gas and oil into distinct chambers for fade-free operation and instant response, avoiding the aeration that can affect traditional twin-tube shocks.
- Two working chambers: An air-free hydraulic piston and valve area for responsiveness and control, plus a high-pressure nitrogen gas area with a floating piston for a comfortable ride during normal driving.
- Triple chrome-plated piston rod: Because fluid leaking can cause shock failure, the ultra-smooth rod is designed to reduce seal wear.
- Added damping: Adds up to 25% more damping performance over original equipment shocks, and the higher gas pressure is designed to improve steering response.
KYB notes the Gas-a-just also helps keep Electronic Safety Systems, which depend on the suspension, brakes, and tires, performing as designed. Sold individually; replacing both sides on the axle together is recommended for balanced ride control.
Interchange: 68236645AC · 68236645AD · 68236648AD · 68236649AD
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicle does this shock fit?
It is a direct-fit rear shock absorber for the 2014-2018 RAM 3500. Check the Buyer's Guide tab to confirm the fit for your specific truck.
Is this a monotube or twin-tube shock?
It is a KYB Gas-a-just high-pressure monotube gas shock. The monotube design separates the gas and oil for fade-free operation and instant response.
Does it offer more damping than the factory shock?
KYB states the Gas-a-just adds up to 25% more damping performance over original equipment shocks, with added damping over the OE design.
Why does it have a chrome-plated piston rod?
Fluid leaking can be a cause of shock failure, so the Gas-a-just uses an ultra-smooth triple chrome-plated piston rod designed to reduce seal wear.
How many should I buy?
This listing is for one shock, sold individually. Replacing both rear shocks together is recommended for even, balanced ride control.
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