KYB 553177 Shock Absorber - Rear

KYB Gas-a-Just Rear Shock for Mercedes-Benz 190E

The KYB Gas-a-Just 553177 is a monotube suspension shock absorber built as an OE-style replacement for the rear of 1984-1993 Mercedes-Benz 190E models. It is engineered to restore original ride control while adding firmer damping response for vehicles that work harder, tow, or run larger wheels and tires.

Key Features

• Up to 25% more damping performance than original equipment shocks
• Monotube design separates gas and oil for consistent response and fade resistance
• High-pressure nitrogen gas chamber delivers quick steering response and control
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Designed specifically for Mercedes-Benz applications
• Includes dust cover, B-stop, and R-stop

Product Details

KYB Gas-a-Just shocks use two working chambers: an air-free hydraulic piston and valve area for control, plus a high-pressure gas section with a floating piston for immediate damping on demand. On the Mercedes-Benz 190E rear suspension, that design helps maintain stable body control without sacrificing normal-road comfort. Part number 553177 is a direct-fit suspension shock absorber for rear applications listed for 1984-1993 Mercedes-Benz 190E, and it cross-references Monroe Shocks & Struts 39001 for the same application.

What This Shock Helps Address

• Excessive rear-end bounce after bumps
• Reduced control from worn OE shock absorbers
• Soft or delayed steering response during driving transitions
• Fade from heat buildup during repeated suspension movement
• Seal wear and fluid leakage associated with aging shocks

Installation Notes and Tips

Fits 1984-1993 Mercedes-Benz 190E, rear. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. Verify compressed length, extended length, stroke, and mount types before installation: compressed length 14.76 in., extended length 20.39 in., stroke 5.63 in., lower mount E2(10X40), upper mount S1. Confirm the vehicle’s rear suspension configuration before ordering and installation.

Quality Assurance

KYB designs the Gas-a-Just line as an OE monotube replacement to help restore factory-style suspension capability with added damping control. The 553177 is built for consistent operation in rear Mercedes-Benz 190E applications and supports proper suspension performance when the vehicle’s chassis, brakes, and tires are operating as intended.