ECCPP Front Hood Lift Supports Struts Gas Springs Prop Rods for 1997-2006 Ford Expedition,1997-2004 Ford F-150 F-250 Set of 2 FITMENT - Gas struts shocks lift supports for 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 Ford Expedition,1997 1998 1999 2000 2001 2002 2003 2004 Ford F-150 F-250 Compatible with 4478 SG404016 lift support strut QUALITY - Rust-resistant Nitride corrosion resistant piston rod extends product life, Multi-Lobe Seal make gas springs more tolerant to vibration and extreme temperature, 100% brand new and tested to meet or exceed OEM specifications FUNCTION - Use compressed gas, contained in a cylinder and compressed by a piston, to exert a force to support the weight of front hood or rear liftgate tailgate hatchback doors while they are open, no need to hold the door up with your head EASY INSTALLATION - Easy to install with simple hand tools in just minutes - no special tools required for installation NOTICE - Please check the description and compatibility chart before your purchasing. We provide ONE YEAR WARRANTY for all our lift supports. Please contact us if you have any question