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-esi5946961
- 1997-ford-f-150-base-esi5702209
- 1997-ford-mustang-gt-esi3346904
- 1998-ford-f-150-base-esi7297301
- 1998-ford-mustang-gt-esi3844734
- 1999-ford-f-150-base-esi5793482
- 1999-ford-f-150-lightning-esi6062852
- 1999-ford-mustang-gt-esi2371756
- 2000-ford-f-150-base-esi8976442
- 2000-ford-f-150-lightning-esi5482191
- 2000-ford-mustang-gt-esi1601428
- 2001-ford-f-150-lightning-esi5230959
- 2001-ford-mustang-gt-esi3582315
- 2002-ford-f-150-harley-davidson-edition-esi4033625
- 2002-ford-f-150-lightning-esi2705933
- 2002-ford-mustang-gt-esi6829141
- 2003-ford-f-150-harley-davidson-edition-esi4365151
- 2003-ford-f-150-lightning-esi7542624
- 2003-ford-mustang-gt-esi7173233
- 2004-ford-mustang-gt-esi3896626
- 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