Ford Zetec R 16v Black Top Double Valve Springs Inc Caps SC71 Seats & Seals.
| Manufacturer | Ford |
| Rate N/mm | 45 |
| Rate Lbf | 258 |
| Seat Pressure Lbf | 43 |
| Seat Pressure Kg | 20 |
| Fitted Length mm | 37.2 |
| Nominal Internal Diameter | 13.5 |
| Nominal Outside Diameter | 25.1 |
| Crush Height mm | 20.46 |
| Spring Type | Double |
| Product Type | Valve Springs |
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