Manley Ford 4.6L/5.4L SOHC NexTek Series High Performance Valve Springs (2 valves per cylinder)

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.

This Part Fits:

Year	Make	Model	Submodel
1997-2000	Ford	F-150	Base
2002-2003	Ford	F-150	Harley-Davidson Edition
1999-2003	Ford	F-150	Lightning
1996-2004	Ford	Mustang	GT