The Alltrux ATX1215-0041 Rear Shock Absorber replaces OEM S-26557 and is designed as a service replacement for heavy-duty truck rear suspension systems. It helps control vibration, stabilize axle movement, and maintain consistent ride performance under load in fleet and vocational environments.

Rear Shock Absorbers play a critical role in rear suspension control by dampening road shock, reducing excessive bounce, and improving overall vehicle stability. As original shocks wear, leak, or lose damping performance, ride quality, handling, and suspension component wear can be negatively affected. Replacing worn rear shock absorbers helps restore proper suspension control, improve ride consistency, and reduce unplanned service events.

KEY FEATURES
• Designed for heavy-duty truck rear suspension systems service and maintenance applications
• Helps stabilize rear axle movement and support ride control under load
• Durable construction suited for fleet, vocational, and on-highway use
• Brand: Kenworth 
• Catalog details: Rear Shock Absorber – Interchange S-26557, 65492, 66419, 85931, 315417
• Verify compatibility and application requirements before ordering

TECHNICAL SPECIFICATIONS
Alltrux Part Number: ATX1215-0041
OEM Reference: S-26557
Reference Numbers: S-26557, 65492, 66419, 85931, 315417
Brand: Kenworth
System Application: Heavy-Duty Truck rear suspension systems

CROSS REFERENCES
S-26557, 65492, 66419, 85931, 315417

Note: Confirm reference numbers and application details before ordering to ensure proper fit and performance.