NISSAN 55031-VB000 Rear Coil Spring Protective Tube

The genuine Nissan 55031-VB000 rear spring protective tube (TUBE-RR SPRING) is a crucial suspension component designed to protect the rear suspension coil springs and ensure noise-free operation. This specialized protective sleeve fits directly over the spring coil, preventing direct metal-to-metal contact.

Key Functions and Operating Principle:

• Noise, Vibration, and Harshness (NVH) Damping: Eliminates squeaking, creaking, and knocking noises caused by friction between the spring and the spring seat or between adjacent spring coils.
• Mechanical Protection: Shields the coil spring's factory powder coating and surface treatment from stone chipping, road grit, and other abrasive debris.
• Corrosion Protection: Prevents moisture and road salt from making direct contact with the metal surface, thereby minimizing the risk of corrosion and premature spring failure.

Technical Specifications:

• Fitting Position: Rear suspension, coil spring (upper or lower coil)
• Material Composition: Weather-, ozone-, and oil-resistant high-density elastomer / premium rubber compound
• Design: Flexible tubular sleeve precisely profiled to match the spring wire diameter
• OEM Quality: Genuine Nissan OEM part, ensuring perfect fitment and long service life

Signs of Wear and Importance of Replacement:

Due to constant suspension movement and exposure to road elements, the spring protective tube may age, harden, crack, or tear over time. Common symptoms of a damaged or missing protective sleeve include:

• Metallic squeaking or rhythmic knocking from the rear axle area, especially over uneven surfaces or while cornering.
• Premature surface corrosion and rust formation on the lower spring coils.
• Accelerated wear of the spring seat caused by direct metal-on-metal friction.

Replacing the spring protective tube is highly recommended whenever installing new rear shock absorbers or coil springs to ensure optimal suspension performance and quiet operation.