Econoride Rolling Lobe Air Spring - Hendrickson Vantraax P959 Type - Firestone 9978 Contitech 67588 566.ER9978

Hold your trailer where it belongs with this Econoride Rolling Lobe Air Spring distributed by FleetPro Parts & Tires — the value-line answer to the P959 type bag used on Hendrickson Vantraax trailer suspensions. When a bellows cracks, chafes or starts weeping, the deck drops, the compressor runs all shift chasing the leak, the freight takes a beating and the shock absorbers go right after it. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, trailer repair shops, and owner-operators nationwide.

P959 Geometry, Econoride Value: The 9978 Air Spring Advantage

This bellows follows the Contitech 9 10-14 P 959 rolling lobe profile: an 11.5in design height, 7.8in collapsed, and 12.6in maximum diameter, on a plastic base, at 15.11 lbs. Those numbers are what the ride-height valve on a Vantraax suspension is calibrated around — get them wrong and the trailer either rides nose-high or bottoms the bag on every expansion joint.

Rolling lobe construction lets the bellows roll along the piston instead of stretching, which keeps the spring rate consistent loaded or empty. The plastic base resists the corrosion that eats steel bases from underneath a salted trailer, and the rubber compound is built for road salt, spilled lubricants, freezing temperatures and the debris a trailer axle lives in.

At FleetPro Parts & Tires, we know a suspension job is only right when the part is right. This Econoride spring is a direct replacement for highly searched industry numbers including Firestone 9978, 8465 and W01-358-9978, Contitech 67588 and 69744, and Goodyear 1R12-1179. Always inspect the mounts and shock absorbers when you replace an air spring.

Vehicle Fitment & Compatibility

This heavy-duty aftermarket air spring is intended for the following commercial applications:

• Make/Model: Hendrickson Vantraax trailer suspensions
• Position: Trailer air-ride suspension
• Style: Contitech 9 10-14 P 959
• Component Group: Air Suspension / Air Springs

Direct Replacement & Cross-Reference Numbers:

This Econoride air spring serves as a direct replacement for the following part numbers:

• Contitech Interchange: 67588, 69744, 9 10-14 P 959
• Firestone Interchange: 8465, 9978, W013589978, W01-358-9978
• Goodyear Interchange: 1R121179, 1R12-1179
• Automann Distributor #: 566.ER9978

Technical Specifications

• Component Type: Rolling Lobe Air Spring
• Style: Contitech 9 10-14 P 959
• Base Material: Plastic
• Design Height: 11.5 in
• Collapsed Height: 7.8 in
• Max Diameter: 12.6 in
• Weight: 15.11 lbs
• Package Dims: 10.6 x 10.6 x 11.8 in
• Product Level: Fleet Value Aftermarket
• Brand: Econoride (Distributed by FleetPro Parts & Tires)