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 |
- 1996-ford-mustang-gt-esi6189859
- 1997-ford-f-150-base-esi4577880
- 1997-ford-mustang-gt-esi8957751
- 1998-ford-f-150-base-esi7717214
- 1998-ford-mustang-gt-esi3465512
- 1999-ford-f-150-base-esi2505988
- 1999-ford-f-150-lightning-esi6684989
- 1999-ford-mustang-gt-esi4270780
- 2000-ford-f-150-base-esi6669170
- 2000-ford-f-150-lightning-esi6451025
- 2000-ford-mustang-gt-esi4481216
- 2001-ford-f-150-lightning-esi3972674
- 2001-ford-mustang-gt-esi8795569
- 2002-ford-f-150-harley-davidson-edition-esi2889023
- 2002-ford-f-150-lightning-esi9758787
- 2002-ford-mustang-gt-esi9639623
- 2003-ford-f-150-harley-davidson-edition-esi4118823
- 2003-ford-f-150-lightning-esi6750912
- 2003-ford-mustang-gt-esi8508357
- 2004-ford-mustang-gt-esi8280954
- Bucket:Ford
- ClearanceItem:N
- Engine Components>Valve Springs- Retainers
- EPA:N/A
- fits_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
- LTL:N
- MPN:221437-16
- Non-CARB:N
- Prop65:Y
- SpecialOrder:Y