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-esi9799033
- 1997-ford-f-150-base-esi5740437
- 1997-ford-mustang-gt-esi3132636
- 1998-ford-f-150-base-esi8618118
- 1998-ford-mustang-gt-esi6672868
- 1999-ford-f-150-base-esi8560433
- 1999-ford-f-150-lightning-esi6922963
- 1999-ford-mustang-gt-esi4977539
- 2000-ford-f-150-base-esi6539796
- 2000-ford-f-150-lightning-esi2669528
- 2000-ford-mustang-gt-esi8742168
- 2001-ford-f-150-lightning-esi6449697
- 2001-ford-mustang-gt-esi9085264
- 2002-ford-f-150-harley-davidson-edition-esi9971047
- 2002-ford-f-150-lightning-esi5605542
- 2002-ford-mustang-gt-esi5783903
- 2003-ford-f-150-harley-davidson-edition-esi3013122
- 2003-ford-f-150-lightning-esi2883459
- 2003-ford-mustang-gt-esi4015372
- 2004-ford-mustang-gt-esi4482120
- 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