KYB Suspension Shock Absorber P/N:3440137
Designed to restore your vehicle's original capabilities, the KYB shock absorber 553178 is a Gas-a-Just high-pressure monotube gas shock offered as an OE monotube replacement for the rear suspension. It fits many vehicles, among them the 1990-1993 Mercedes-Benz 300D, 1995 Mercedes-Benz E300 and 1994-1995 Mercedes-Benz E320. See the Buyer's Guide tab for the full list and engine details.
This KYB Gas-a-Just shock absorber splits its work between two separate chambers. An air-free hydraulic piston and valve area handles responsiveness and control. A second high-pressure nitrogen gas area with a floating piston is designed to provide a comfortable ride in normal driving and add instant performance on demand. Its components and valving are designed specifically for Mercedes-Benz applications.
Electronic safety systems depend on the suspension, brakes and tires operating as the vehicle manufacturer intended. The Gas-a-Just is designed to help keep those systems performing as designed.
Interchange: 69744 · 39001
This part cross-references / interchanges with the following part numbers:
What vehicles does the KYB 553178 fit?
It fits the rear of many vehicles, among them the 1990-1993 Mercedes-Benz 300D, 1995 Mercedes-Benz E300 and 1994-1995 Mercedes-Benz E320. See the Buyer's Guide tab for the full list.
How does the Gas-a-Just monotube design work?
It uses two separate chambers: an air-free hydraulic piston and valve area for control, and a high-pressure nitrogen gas area with a floating piston. The monotube design keeps the gas and oil separate.
How does this KYB gas shock absorber compare with an original equipment shock?
KYB says it adds up to 25% more damping performance than original equipment shocks. It also gives extra damping for vehicles that work, tow, or run larger, heavier tires and wheels.
What are signs a rear shock absorber may need replacing?
Signs can include fluid leaking from the shock, excessive bouncing after bumps, a floaty or harsh ride, and uneven tire wear. Diagnose the cause before replacing the shock.
Should I replace both rear shocks at the same time?
Replacing both rear shocks together is recommended for balanced handling. Follow the vehicle service information for the correct installation procedure and fastener torque.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.