SAMPA Heavy Duty Trailer Air Spring (Airbag) Assembly with Plastic Piston | SP 559978-KP | Replaces Hendrickson S28929, Firestone W01-358-9978
Local pickup available
2 pickup locations · closest: Santa Fe Springs Warehouse · Santa Fe Springs, CA
Pickup detailsDelivery & returns
Shipping and pickup
Available methods, costs, and pickup locations are shown at checkout.
30-day returns
Return the part for a refund or exchange in its original condition and packaging.
Description
The Genuine SAMPA SP 559978-KP Air Spring Assembly is designed for heavy-duty trailer suspension systems, providing reliable load support, improved ride stability, and reduced road vibration.
Manufactured to OEM specifications, this complete air spring assembly features a durable rubber bellows, steel top plate, and plastic piston for dependable performance in demanding commercial trucking applications.
Product Features
Brand: SAMPA
Part Number: SP 559978-KP
Product Type: Complete Trailer Air Spring Assembly
Piston Material: Heavy-Duty Plastic
Application: Rear Air Suspension
Condition: Brand New
Vehicle & Suspension Compatibility
Compatible with select Hendrickson trailer suspension systems:
INTRAAX: AAT23K, AAT25K, AAT30K, AANT23K, AAEDT30K
VANTRAAX: HKANT40K, HKANT46K, HKANT50K, HKA180/200/250, AAZNT23K/46K/69K
Cross Reference / Replacement Part Numbers
SAMPA: SP 559978-KP
Hendrickson: S28929, C28929
Firestone: W01-358-9978
Continental / ContiTech: 67588, 9 10-14 P 959
Automann: AB1DK23I-P959
FleetPride: AS9978
Meritor: MAF9978
Dayton: 452-9978
Important: Please verify the OEM part number, suspension model, and mounting configuration before purchasing to ensure proper fitment.
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