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.
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 inch
- Installed Pressure: 90lbs
- 100Lbs at .800 inch
- 252Lbs at 1.250 inch
- Coil Bind: 1.14 inch
Returns Policy
If you would like to return or refund an item please use the contact page on our website and write us a message. You can also email us at info@classictomodernparts.com or phone 860-810-4654. Customer pays return shipping. All returns must include all items from your purchase or a possible restocking fee may apply. If possible please put them in the same box that arrived to you. Some circumstances in which credit will not be issued but not limited to: Product has been installed and/or used, product has been damaged from an attempt to be installed and/or used, product is shipped back without original box, product serial number does not match that of which was original shipped to buyer, product is deemed not re-saleable by Classic To Modern Parts due to customers own actions in dealing with the product.- Choosing a selection results in a full page refresh.