Description
Maintain optimal chassis ride height and eliminate severe axle vibrations across your commercial fleet with the genuine ContiTech 916 N6 Air Spring Rubber Bellow. Engineered specifically for heavy commercial truck rear suspensions, lift axles, passenger transit buses, and multi-axle freight trailers, this OE-grade flexible rubber sleeve absorbs high-energy road impacts and maintains constant air pressure under maximum payloads. Surface rubber cracking, fabric cord fatigue, oil contamination degradation, or air sleeve punctures cause continuous pressure leakage, severe vehicle sagging, accelerated shock absorber wear, and dangerous cargo bounce. This original ContiTech 916 N6 rubber bellow solves those suspension air-leakage failures directly. It features multi-layer cord-reinforced elastomer construction, heat and ozone-resistant EPDM/NR rubber compounds, reinforced bead rings, and optimized rolling sleeve contours to deliver leak-free air retention, superior flexibility, and uncompromised transport availability.
Technical Parameters
| Category | Specifications & Technical Details |
| Multi-Ply High-Tensile Fabric Cord Reinforcement | We interleave high-density multi-layer nylon fiber cord plies inside the bellows. This greatly raises the burst pressure limit and tensile strength. As a result, it prevents abnormal bellows expansion and deformation under high pressure. |
| Ozone & Chemical Resistant Polymer Compound | We blend premium anti-ozonants into the rubber base compound. It delivers strong resistance to road salt spray, diesel splash, and high-low temperature baking. Moreover, this extends the bellows anti-cracking service life. |
| Precision Machined Bead Ring Sealing Collars | We factory-mold high-strength steel sealing collars into both ends. They ensure a tight, seamless crimp with the top plate and piston base. Consequently, this completely eliminates micro air leakage under high pressure. |
| Optimized Rolling Lobe Low-Friction Contour | The bellows outer wall features a precise fold-guiding contour and extremely low friction coefficient. It rolls smoothly through extension and compression cycles. Moreover, this prevents wear from friction between the rubber and the base. |
| Automotive-Grade High Fatigue Bending Life (-40°C to +70°C) | The bellows passes millions of high-frequency repeated bending fatigue tests. It maintains excellent flexibility and rebound elasticity under extreme cold and high-temperature environments. |
Applicable Car Brands & Models
Common warning symptoms include:
Visible Surface Rubber Cracking or Ozone Crazing: Deep cracks appearing along the folding curvature of the rubber sleeve.
Vehicle Sagging Overnight: The air suspension slowly leaks pressure when parked, causing the chassis to sink on one side.
Exposed Fabric Cord Reinforcement: The outer rubber layer peels off, revealing the internal white nylon fabric layers.
Continuous Air Leakage Noise: Audible hissing sounds near the air spring assembly under normal operating pressure.
Premature failure is typically caused by operating continuously with worn-out shock absorbers (causing excessive over-extension), oil/grease leaks from nearby wheel hubs degrading natural rubber, and road gravel debris trapped between the rubber bellow and lower piston.
Yes. If the top plate and lower piston base remain free of heavy corrosion, warping, or thread damage, mechanics can install a new ContiTech 819 N rubber bellow using proper crimping tools, saving significant maintenance cost.
Our 1-year warranty covers all rubber cord delamination, premature material cracking under rated pressures, bead ring separation, dimensional molding flaws, and manufacturing defects under normal operating conditions. If a bellow fails within 12 months, we provide prompt replacement or warranty processing upon inspection.
