TRIANGLE SUSPENSION 55-981 International - Navistar, R Spr, Lvs:12 ; OEM# 413206C91; SE Length: 17; LE Length: 20-3/4; SE End: TPK; LE End: - - -; Grading 1/558, 6/499, 5/447

Since 1919, Triangle Suspension Systems Co.® has set the gold standard for steel leaf springs. With generations of spring shop customers going back for more than 7 decades, Triangle Suspension has made a name for itself for its use of high-quality materials that are backed by ISO-compliant manufacturing processes. Their catalog covers a wide range of applications, including leaf spring assemblies, air beams, and helper springs for light, medium, and heavy duty vehicles. They also offer spring repair components and custom-engineered spring to fill almost any niche. All their products are manufactured in-house in their DuBois, PA, manufacturing facility and distributed across the United States and beyond.