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The Hendrickson Suspension Bolster and Auxiliary Spring Set helps correct suspension sag caused by fatigued rubber components that can no longer manage working loads. This single wheel end set renews the support point where the axle meets the beam, helping the suspension return to a more level stance. Each elastomeric spring uses a progressive response, staying more compliant during lighter operation and firming up as payload increases to help prevent bottoming. An included hardened wear plate absorbs repeated contact between the spring and beam, helping protect suspension castings from surface wear and damage. With fresh Hendrickson 64179-049 components in place, load control and handling feel more stable through changing payload conditions.
| Key No | Key Nos. 20-22 |
| Note | Bolster Spring |
| Nut | ½"-13 UNC Flange Nut |
| Plate | Wear Plate |
| Brand | Part Number |
|---|---|
| HDR64179049 | |
| ATRO | KT50-25002, KT50-25003 |
| EUCLID | E16356 |
| PAI | 750510 |
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