Sachs JNT5238S Nivomat Self-Leveling Rear Shock Absorber

The Sachs JNT5238S Nivomat is a self-leveling monotube shock absorber designed to automatically maintain optimal vehicle ride height under varying load conditions. Nivomat technology was developed by Sachs (now part of ZF Group) to improve safety and performance when vehicles are loaded with extra weight from passengers, luggage, or towing applications.

Key Features:

• Self-leveling design automatically adjusts ride height without external pumps, compressors, or electronic systems
• Monotube construction with integrated hydraulic pump mechanism and oil reservoir
• Polished internal working cylinder prevents piston band wear for extended service life
• Progressive damping increases with load for optimal handling and comfort
• Mechanical operation uses suspension movement energy to pump vehicle to proper height
• Rear axle installation replaces conventional shock absorbers
• Reaches optimal level within approximately one to one-and-a-half miles of driving

The Nivomat system operates through a hollow piston shaft containing an internal pump mechanism. As the suspension moves during normal driving, oil is drawn from the low-pressure reservoir and pumped into the main chamber, increasing accumulator pressure and lifting capability. This fully self-contained system maintains proper ride height for every load condition, ensuring consistent handling, reduced tire wear, and improved fuel economy. Used by major OEMs including Chrysler, Ford, GM, Jaguar, Volvo, and others.