Manley Ford 4.6L/5.4L DOHC NexTek Series High Performance Valve Springs (Single)
Special Order
This part is still available to order. Once you place your order, we’ll submit it directly to Manley Performance, and they’ll ship it straight to you.
Delivery times can vary depending on the brand, so we can’t guarantee an exact arrival date. What we can guarantee is that we’ll stay on top of your order, monitor its progress, and keep you updated until it reaches your door.
Special-order items are typically not kept in stock by most retailers. By ordering through us, your order is placed directly with Manley Performance, assuring you get the part as quickly as possible.
Want to get an estimated delivery timeframe before ordering? Contact us through our contact page, and we’ll be happy to find out for you.
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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.
- 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

