55-120 Heavy Duty Front Leaf Spring for International Navistar Trucks
The 55-120 is a heavy-duty 3-leaf front suspension spring designed for compatible International Navistar commercial trucks, including selected 9000 Series, ProStar and LoneStar models.
Featuring a full-taper construction with shock-eye design, this spring provides reliable load support, effective road shock absorption and stable suspension performance for demanding commercial applications.
Manufactured from high-quality SUP9 spring steel, our leaf springs offer high strength, good elasticity and fatigue resistance. Precision heat treatment and shot blasting help improve durability, while electrophoretic coating provides a smooth, uniform finish and enhanced corrosion protection.

High-quality SUP9 spring steel
Heavy-duty 3-leaf full-taper construction
Shock-eye design with suspension bushings
Reference load capacity: 6,350 lbs per spring assembly
Designed for compatible International Navistar front suspensions
Precision heat treatment and shot blasting
Smooth and uniform electrophoretic coating
OEM and ODM customization available
Product Specifications
Number of Leaves: 3
Width: 101.6 mm
Steel Thickness: 72.2 mm (Pack Thickness)
Eye to Eye Dimensions: To be confirmed (Reference A+B Length: 1,473.2 mm)
Type: Front Spring
Weight: Approx. 57.0 kg (Reference Unit Weight)
Compatible Vehicles: International Navistar 9100, 9200, 9300, 9400, 9700, 9800, ProStar, LoneStar and selected other models.
Reference OEM Numbers: 1653751C91, 1653751C92
Reference Load Capacity: 6,350 lbs (approximately 2,880 kg) per spring assembly.
Vehicle compatibility and technical specifications should be verified against the original suspension requirements before ordering.



Contact: Maggie
Phone: 0086 13130206741
E-mail: maggie@lnweijieer.com
Whatsapp:0086 13130206741
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