Upgrade your Freightliner suspension with the precision and longevity of ATRO Polyurethane. The SP46-11508is a heavy-duty Spring Eye Bushing specifically designed for high-stress vocational and over-the-road trucks. Made in the USA, this bushing is engineered to outperform standard rubber bushings in durability, chemical resistance, and ride stability.
| Feature | Details |
| Part Number | SP46-11508 |
| Manufacturer | ATRO (Made in the USA) |
| Category | Suspension / Spring Eye Bushings |
| Inside Diameter (ID) | .80" (20mm) |
| Outside Diameter (Ref) | 2.362" (60mm) |
| Length | 4.25" |
| Shipping Weight | 2.985 lbs |
| UPC Code | 751354043549 |
This bushing is a high-performance solution for Freightliner trucks, engineered to meet or exceed OEM standards for heavy-duty suspension systems.
The SP46-11508 replaces or serves as a direct upgrade for the following industry part numbers:
Freightliner: 16-20508-000, 16-22182-000, 16-22210-000
Dayton Parts: RB374
Superior Resilience: Unlike standard rubber, ATRO’s proprietary polyurethane is designed to withstand extreme torsional loads without taking a permanent set or cracking.
Chemical Resistance: Completely unaffected by oil, grease, road salt, and cleaning solvents that typically cause rubber bushings to rot and fail.
Maintenance-Free: The self-lubricating properties of the material reduce friction and eliminate the need for frequent greasing, lowering your fleet's maintenance costs.
Precision Handling: Maintains axle alignment and reduces "spring walk," providing a more stable and predictable ride under heavy loads.
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