1981-2021 Navistar International & Caterpillar Paystar 5000, HX And 5870 Front Leaf Spring 55-976* Diagram May Differ From Actual Spring* Number of Leaves 10 Leaf Spring Width 4" A Leaf Spring Length: 26 1 2" B Leaf Spring Length: 27" C Leaf Spring Arch: 4" D Leaf Spring Pack Thickness: 5 1 4" Leaf Spring Capacity: 10,600 lbs. Leaf Spring OEM Number: 1606839C91 Leaf Spring Eye Threaded Bushings: Front TB 26 Rear TB 26 Leaf Spring Material: 10 527 Location Front Verify the OEM part number and measurements to confirm compatibility before

• * Diagram May Differ From Actual Spring*
• Number of Leaves - 10
• Leaf Spring Width - 4"
• A - Leaf Spring Length: 26-1/2"
• B - Leaf Spring Length: 27"
• C - Leaf Spring Arch: 4"
• D - Leaf Spring Pack Thickness: 5-1/4"
• Leaf Spring Capacity: 10,600 lbs.
• Leaf Spring OEM Number: 1606839C91
• Leaf Spring Eye Threaded Bushings: Front TB-26 / Rear TB-26
• Leaf Spring Material: 10/527
• Location - Front

Verify the OEM part number and measurements to confirm compatibility before purchasing. Need help? Visit: How to Identify a Leaf Spring.

Leaf spring 55-976 is the front leaf spring for Navistar International Paystar 5000, HX615, HX620, COF6870 (6X4 and 6x6) and Caterpillar CT660 heavy duty trucks. The spring is 4" wide, is a 10 leaf spring and the capacity of the spring is 10,600 lbs. The OEM part number is 1606839C91.

Vehicle Models And Year Ranges:

Fits: From 1976 Front Navistar/International Paystar 5000 Series

Fits: 2016-2021 Front Navistar/International HX615 and HX620 (With Set Back Axle)

Fits: 1981-1986 Front Navistar/International COF6870 (6x4 and 6x6) (With Single Steer Axles)

Fits: 2012-2017 Front Caterpillar CT660