| Product Line | Suspension |
| Category Name | Chassis & Suspension |
| Part Type | Main Support Spring |
| Alternate Part Name | Single Leaf, Main Support Spring, Main Support, Z-Spring, Main Support Member |
| OEM Part Number | 56946-000 |
| Application Type | Semi-Trucks, Heavy Duty Trucks |
| Mounting Position | Rear Suspension |
| Rear Arch Height | 11-1/2 in. |
| Front Arch Height | 2-5/8 in. |
| Material | Steel |
| Leaf Width | 3 in. |
| Length (A) | 24 in. |
| Length (B) | 19-7/8 in. |
| Spring Load Capacity | 23.000 lb. |
| Net Weight | 63.35 lb. |
| Cross References | 4QK4150M, 50-389, 50389, 56946, 56946-000, 56946000, 750152 |
| Intended Application | - Compatible with Hendrickson HAS 400, HAS 402, and HAS 460 rear air ride suspension systems; intended for rear axle suspension applications utilizing HAS-series main support member configurations within heavy-duty truck air ride suspension assemblies.
- Always compare with your OEM part number prior to purchase to confirm full compatibility.
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