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XD388 XDP Heavy Duty High Boost Valve Spring Set - Ford 6.0L/6.4L Powerstroke 2003-2010

SKU: XD388
Mftr. Part#: XD388
The XDP Heavy Duty High Boost Valve Spring Set delivers increased strength and improved valve control in your 6.0L/6.4L Powerstroke truck.

PRODUCT SPECS (click to expand)

Attribute nameAttribute value
Truck Type/ModelFord
Product TypeValve Springs
BrandXDP (Xtreme Diesel Performance)


The XDP High Boost Valve Spring set is an essential upgrade to strengthen and gain control of the valvetrain in your truck, the valve springs deliver improved 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 these valve springs come as a complete set and include 1 year of warranty.


  • Set of 32 springs
  • Re-uses factory retainers & locks
  • 100 lb seat pressure
  • Installed height: 1.830"
  • Installed pressure: 90lbs
  • 100 lbs @ .800"
  • 252 lbs @ 1.250"
  • Coil bind: 1.14"