Slacks Replaces R801073

Heavy-Duty Automatic Slack Adjuster for Reliable Braking Performance
Upgrade your truck’s braking system with the World American S-23558 Automatic Slack Adjuster. Built to precise OEM specifications, it ensures optimal brake clearance, reducing manual adjustments and enhancing safety.

⚙ Key Features & Benefits:
✔ 1.5″-28 spline camshaft diameter for an exact fit and high durability.
✔ 5.5″ straight arm span provides proper brake alignment and efficient braking force distribution.
✔ Automatic adjustment mechanism minimizes maintenance, improving overall vehicle uptime.
✔ 0.625″-18 thread pitch ensures easy installation and secure fitting across multiple truck brands.

🔄 Application & Compatibility:
Designed for use in heavy-duty trucks, commercial vehicles, and buses, compatible with:
✔ Freightliner – Cascadia, Century Class (2000-2022)
✔ Volvo Trucks – VN Series, VNL, VNR (1999-2023)
✔ Ford – F-650, F-750 Super Duty (2004-2023)
✔ Navistar/International – ProStar, DuraStar (2001-2022)
✔ Thomas Built Buses – School Bus Models (2005-2022)
✔ Meritor – Brake Systems for Heavy-Duty Vehicles

🔄 Replaces for OEM & Aftermarket Part Numbers:
✔ Meritor: R801073, A28-3235H1152S, R802462, R803109, R803110
✔ Freightliner: ABP N42AS R801073, TDA R801073, TDA R803109, TDAR801072
✔ Volvo Truck: 3947646
✔ Ford: 4C4Z2041DA
✔ Navistar: 2018-227-C, 2018227C
✔ Euclid: E-11400, E-11401, E11401A
✔ Automann: 139.2831, 139.2832, 139.2833