Manley Performance Valve Spring for Ford
Part # 221421-16SKU MANP221421-16
Set your vehicle above for a fit verdict. 2 vehicles listed below.
| Brand | Manley Performance |
|---|---|
| Part type | Engine Valve Spring |
| UPC / GTIN | 00807298082110 |
- Tightly controlled open-end flatness reduces valve stem side loading
- Manufactured from “super clean” Hi-Tensile Chrome Silicon steel
- Proprietary multi-step heat treating minimizes load loss
- Tip thickness designed to eliminate overload breakage
- Shot-peened to MIL spec for max fatigue life
Description
From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most demanding race conditions. That means more consistent spring force deep into a run, reduced valve bounce, and improved overall stability for high-RPM performance. Built to outperform and outlast in real-world competition.
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| Year | Make | Model |
|---|---|---|
| 2011 - 2016 | Ford | F-250 Super Duty |
| 2011 - 2016 | Ford | F-350 Super Duty |