Add the Valair Heavy Duty Upgrade Clutch NMU70432-01 to your 2003-2010 Ford 6.0L/6.4L Powerstroke 6-Speed. Aftermarket organic clutches are generally better than the OEM clutch you get from your dealer. This is due to the better quality materials used, the quality of the manufacturing process, and QC. Some companies also offer higher plate loads as options to the standard plate thus giving the clutch better holding ability than its OE counterpart. The Heavy Duty Upgrade Clutch is best suited to trucks without or only minor power modifications and is great for light towing at stock HP levels. Features: 13" x 1.375" HD Organic Kit Organic Facings HD Hub Rated @ 400HP 4000# Pressure Plate Kit includes: New Flywheel, 4000# Pressure Plate, Clutch Disc, Release Bearing, Pilot Bearing and Alignment Tool.