Enhance your Freightliner’s suspension with the precision and longevity of ATRO Polyurethane. The SP46-11023is a heavy-duty Spring Eye Bushing specifically designed for 4" wide front springs. Made in the USA, this bushing is engineered to handle the high-stress demands of vocational and over-the-road trucks, outperforming standard rubber bushings in durability, chemical resistance, and ride stability.
| Feature | Details |
| Part Number | SP46-11023 |
| Manufacturer | ATRO (Made in the USA) |
| Category | Suspension / Spring Eye Bushings |
| Outside Diameter (Ref) | 2 1/4" |
| Outer Sleeve Length | 4 1/8" |
| Overall Length (OAL) | 6.70" |
| Pin Specs | 1 1/4" Pin OD; 5 3/8" Center-to-Center (c-c) |
| Shipping Weight | 3.805 lbs |
| UPC Code | 751354032772 |
| Warranty | 3-Year (U.S./Canada); 1-Year (Export) |
This bushing is a high-performance solution for Freightliner trucks equipped with heavy-duty front 4" wide springs, including:
Freightliner M2 Business Class
Freightliner FL Series
Airtek Suspension Systems
The SP46-11023 replaces or serves as a direct upgrade for the following OEM and aftermarket part numbers:
Freightliner: 16-14603-000, 16-17770-000, 16-18023-000, 16-17194-000, 16-21919-000, 16-21920-000
Gaff: 11094
Automann: MR930
Dayton Parts: RB-263
Flagg: RB263
Superior Chemical Resistance: ATRO’s polyurethane is unaffected by oil, grease, road salt, and cleaning solvents that typically degrade rubber.
Maintenance-Free Design: Self-lubricating properties eliminate the need for frequent greasing, reducing your fleet's maintenance costs.
Extended Service Life: Engineered to maintain its shape and resilience under extreme loads, preventing the "pin-to-sleeve" contact that leads to premature suspension failure.
Industry-Leading Warranty: Backed by a 3-year U.S./Canada warranty, ensuring peace of mind for your investment.
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