XDP Xtreme Diesel Performance | SKU: XD388

Heavy Duty High Boost Valve Spring Set 2003-2010 Ford 6.0L/6.4L Powerstroke XDP

Regular price $399.95
0 in stock

The XDP Heavy Duty 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.

  • Set of 32 Springs
  • 100 Lb. Seat Pressure
  • Performance Valve Spring Kit
  • Essential For Elevated Boost Levels
  • 1-Year Unlimited Mileage Warranty


  • Installed Height: 1.830 inch
  • Installed Pressure: 90lbs
  • 100Lbs at .800 inch
  • 252Lbs at 1.250 inch
  • Coil Bind: 1.14 inch

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.