| Parameter | Description |
| Part Number | 9D9121 |
| Product Name | Spring |
| Brand | Caterpillar |
| Product Type | Engine Compression Spring |
| Material | High-strength alloy spring steel |
| Strength & Performance | Ensures stable performance in heavy-duty diesel engines |
| Surface Treatment / Protection | Heat-treated and corrosion-resistant coating |
| Dimensions & Structure | OEM standard configuration |
| Function / Installation Position | Engine internal mechanical assembly |
| Operating Conditions | Heavy-duty engine operation |
| Compatible Models | 3516C |
| System | Engine system |
| Weight | 0.1 kg |
| Packaging | Industrial polybag + carton packaging |
| Lead Time | 30–90 days |
| Shipping Method | Sea / Air / Land |
| Payment Method | USD / RMB / RUB |
| Warranty | 6 months |
