KYB
Gas-a-just

KYB KG4523 Shock Absorber - Front

Brand KYB 20-1027
E-Waste No
Hose Port Type O-Ring
Housing Material Cast Iron
Mounting Hardware Included No
Package Contents Hydraulic Pump; Instruction Sheet; Sealing Kit
Power Steering Outlet ID Size 0
Power Steering Outlet Thread Size 16x1.5
Power Steering Pump Inlet Attachement Type Hose Barb
Power Steering Pump Outlet Attachment Type Threaded
Power Steering Reservoir Cap Included No
Product Condition Remanufactured
Pulley Attachement Type Press-On
Pulley Included No
Remote Reservoir No
Reservoir Included No
Product line Gas-a-just
Fits —

OE monotube replacement. Restores original capabilities with a direct-fit shock absorber design.

Monotube construction. Separates gas and oil for fade-free operation and instant response.

Triple chrome piston rod. Helps reduce seal wear for smoother, longer-lasting performance.

Cross-references Gabriel 82612 for the same application. See all 1.

$61.54Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Shock Absorbers are typically replaced in pairs, axle by axle.
Order total $61.54
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

KYB Gas-a-just Shock Absorber KG4523

The KYB Gas-a-just KG4523 is a monotube suspension shock absorber built to restore OE-style control with quicker response and added damping performance. It is engineered for Mercedes-Benz applications that need firmer control for daily driving, towing, or vehicles with larger wheels and tires.

The Gas-a-just line uses a high-pressure monotube design that separates gas and oil for consistent damping and fast reaction to road inputs. For Mercedes-Benz owners looking for a direct suspension shock absorber replacement, the KYB Gas-a-just KG4523 is built around the vehicle’s original suspension requirements.

Key Features

  • Adds up to 25% more damping performance than original equipment shocks
  • Monotube construction separates gas and oil for fade-resistant operation
  • Higher gas pressure improves steering response and control
  • Triple chrome plated piston rod helps reduce seal wear and fluid leakage
  • Valving and components are designed specifically for Mercedes-Benz applications
  • Supports vehicles that work, tow, or run larger, heavier tires and wheels

Product Details

KYB’s Gas-a-just line is an OE monotube replacement designed to bring back original suspension capability while adding immediate damping response when road conditions demand it. The internal floating piston keeps the nitrogen gas chamber separate from the hydraulic oil chamber, which helps maintain consistent performance under load. For Mercedes-Benz suspension repair, this shock absorber is a practical choice when the goal is tighter control without changing the vehicle’s basic ride character.

This part cross-references Gabriel 82612 for the same application. Search terms such as Mercedes-Benz shock absorber replacement, KYB Gas-a-just KG4523, and OE monotube rear shock for Mercedes-Benz help identify the correct suspension component for the vehicle.

What It Helps Solve

  • Excessive bouncing after bumps or dips
  • Reduced steering response and loose handling feel
  • Shock fade during repeated suspension movement
  • Fluid leakage caused by worn piston rod seals
  • Loss of control on vehicles carrying heavier wheels, tires, or towing loads

Installation Notes

Verify the compressed length, extended length, and mount style before installation: compressed length 13.19 in., extended length 21.65 in., stroke length 8.46 in., lower mount type SSPECIAL, and upper mount type S1. Confirm the shock position and vehicle application against the original part before replacement. For Mercedes-Benz suspension service, inspect related bushings, mounts, and surrounding wear items during installation.

Quality Assurance

KYB designs the Gas-a-just line as an OE-style monotube replacement with application-specific valving for Mercedes-Benz vehicles. The triple chrome plated piston rod and high-pressure gas design are used to support consistent damping, steering response, and long-term seal protection.

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Gabriel — 82612