A New Old Stock (NOS) set of Terry’s Aero valve springs, reference 451.684, supplied as a set of 8 pairs. Suitable for Fiat 124 Coupe and Spider models, as well as Fiat 125 and 125S engines in 1438cc and 1608cc configurations.
| Brand | Terry's Aero Valve Springs |
| Description | Valve Springs – Ref 451.684 (Set of 8 Pairs) |
| Part Number | 451.684 |
| Compatibility | Fiat 124 Coupe & Spider, Fiat 125 / 125S 1438cc / 1608cc engines (1966 onward) |
| Quantity | Set of 8 pairs of valve springs |
| Condition | New Old Stock (NOS) item in unused condition. As with all long-term stored components, items may show light storage wear, surface marks, or age-related patina to metal surfaces. Appearance may vary slightly between individual units. |