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399.95
Part #: XD388
XDP HD High Boost Valve Spring Set XD388
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Description
The XDP HD High Boost Valve Spring Set XD388 is an essential upgrade to strengthen and gain control of the valvetrain on your 2003-2010 Ford 6.0L/6.4L Powerstroke. These valve springs deliver improved valve control over a factory valve spring with increased spring pressure to minimize valve float. Each spring endures a stress relief process and is computer load mapped to provide a high-quality product with long-term durability. Tested within 1 lb of seat pressure, the XD388 comes as a complete set and includes XDP's 1-year unlimited mileage warranty. Valve springs only, this set re-uses your factory retainers and locks.
Features:
- Set of 32 Springs
- 100 Lb. Seat Pressure
- Performance Valve Spring Kit
- Essential For Elevated Boost Levels
- 1-Year Unlimited Mileage Warranty
Specifications:
Installed Height: 1.830”
Installed Pressure: 90lbs
100Lbs @ .800”
252Lbs @ 1.250”
Coil Bind: 1.14”
Shipping Restrictions Apply 
This product can not be shipped to these states/provinces: CA
This product can not be shipped to these states/provinces: CA Vehicle Fitment
| YEAR | MAKE | MODEL | FOR ENGINE SERIES |
|---|---|---|---|
| 2004 | Ford | E-350 Super Duty | 6.0 |
| 2005 | Ford | E-350 Super Duty | 6.0 |
| 2006 | Ford | E-350 Super Duty | 6.0 |
| 2007 | Ford | E-350 Super Duty | 6.0 |
| 2008 | Ford | E-350 Super Duty | 6.0 |
| 2009 | Ford | E-350 Super Duty | 6.0 |
| 2010 | Ford | E-350 Super Duty | 6.0 |
| 2004 | Ford | E-450 Super Duty | 6.0 |
| 2005 | Ford | E-450 Super Duty | 6.0 |
| 2006 | Ford | E-450 Super Duty | 6.0 |
| 2007 | Ford | E-450 Super Duty | 6.0 |
| 2008 | Ford | E-450 Super Duty | 6.0 |
| 2009 | Ford | E-450 Super Duty | 6.0 |
| 2010 | Ford | E-450 Super Duty | 6.0 |
| 2003 | Ford | Excursion | 6.0 |
| 2004 | Ford | Excursion | 6.0 |
| 2005 | Ford | Excursion | 6.0 |
| 2003 | Ford | F-250 Super Duty | 6.0 |
| 2004 | Ford | F-250 Super Duty | 6.0 |
| 2005 | Ford | F-250 Super Duty | 6.0 |
| 2006 | Ford | F-250 Super Duty | 6.0 |
| 2007 | Ford | F-250 Super Duty | 6.0 |
| 2008 | Ford | F-250 Super Duty | 6.4 |
| 2009 | Ford | F-250 Super Duty | 6.4 |
| 2010 | Ford | F-250 Super Duty | 6.4 |
| 2003 | Ford | F-350 Super Duty | 6.0 |
| 2004 | Ford | F-350 Super Duty | 6.0 |
| 2005 | Ford | F-350 Super Duty | 6.0 |
| 2006 | Ford | F-350 Super Duty | 6.0 |
| 2007 | Ford | F-350 Super Duty | 6.0 |
| 2008 | Ford | F-350 Super Duty | 6.4 |
| 2009 | Ford | F-350 Super Duty | 6.4 |
| 2010 | Ford | F-350 Super Duty | 6.4 |
| 2003 | Ford | F-450 Super Duty | 6.0 |
| 2004 | Ford | F-450 Super Duty | 6.0 |
| 2005 | Ford | F-450 Super Duty | 6.0 |
| 2006 | Ford | F-450 Super Duty | 6.0 |
| 2007 | Ford | F-450 Super Duty | 6.0 |
| 2008 | Ford | F-450 Super Duty | 6.4 |
| 2009 | Ford | F-450 Super Duty | 6.4 |
| 2010 | Ford | F-450 Super Duty | 6.4 |
| 2003 | Ford | F-550 Super Duty | 6.0 |
| 2004 | Ford | F-550 Super Duty | 6.0 |
| 2005 | Ford | F-550 Super Duty | 6.0 |
| 2006 | Ford | F-550 Super Duty | 6.0 |
| 2007 | Ford | F-550 Super Duty | 6.0 |
| 2008 | Ford | F-550 Super Duty | 6.4 |
| 2009 | Ford | F-550 Super Duty | 6.4 |
| 2010 | Ford | F-550 Super Duty | 6.4 |
Specifications
- MPN XD388
- SKU XD388
- ID 102969
- Manufacturer Name XDP
- Shipping Weight 4.00 lb.
- Shipping Length 13 in.
- Shipping Width 4 in.
- Shipping Height 4 in.
- Fuel Type Diesel
- Warranty Info 1 Year / Unlimited Mileage
-
Prop 65
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
- Internal L0R3
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Fitment verification applies to year, make and engine only. Individual details such as model, trim packages, build dates, and other factory options can change fitment and must be verified by customer.
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