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Special Features

  • Engineered as a direct replacement for Firestone W01-358-8864, compatible with select Peterbilt and Kenworth truck suspension systems—ensuring fit, performance, and durability.
  • Built with a robust aluminum base and precision-molded rolling lobe design for superior load handling, vibration control, and long service life under demanding road conditions.
  • Design height of 16 inches with a wide operating range—7.75" minimum height to 24.5" maximum height—supports dynamic truck suspension travel and load leveling.
  • Load rated at 7,070 lbs at 100 PSI and 5,640 lbs at 80 PSI, with a maximum diameter of 10.12", natural frequency of 65 Hz, and engineered for stable ride quality.
  • Includes top plate (2 bolt holes, 6.2" CTC) and bottom plate (1 bolt hole, 2.25" CTC), bolt-ready for easy installation; backed by a 1-year or 100,000-mile warranty.

Description

Short Summary:
The National Drivetrain WA01-8864C Rolling Lobe Air Spring delivers premium air suspension performance for Peterbilt and Kenworth trucks. Designed with a durable aluminum base, this air spring ensures reliable load handling and vibration dampening under heavy-duty use.
Type: Rolling Lobe Air Spring with aluminum base for enhanced durability
Design Height: 16" with a max height of 24.5" and min height of 7.75"
Load Capacity: 7,070 lbs at 100 PSI, 5,640 lbs at 80 PSI
Mounting: Top plate with 2 bolt holes (6.2" CTC), bottom plate with 1 bolt hole (2.25" CTC)
Natural Frequency: 65 Hz; Base and top plate diameters: 7.88" & 9"
Direct fit for select Peterbilt and Kenworth truck models
Firestone: W01-358-8864
Goodyear: 1R12-1097
Continental: AS8864
TRP: AS88640
Paccar Parts: C81-1011
Genuine Newstar: S-44732, S44732
World American: WA01-1013C, WA81-1011, WA81-1013
Backed by a 1-Year or 100,000-Mile Warranty, this air spring from National Drivetrain offers trusted performance, exact fit, and long-term durability under commercial-duty operations.

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