AutobotUSA Side Bars for 2004-2008 Ford F150 Crew/SuperCrew Cab 4-Door 4" Oval Chrome Stainless Steel Heavy Duty Side Step | Nerf Bars | Running Boards Application: 2004-2008 Ford F150 Super Crew ( Crew ) Cab 4 Door Models ( Will Not Fit 2 / 3 Door Models & 04 Heritage Models ), 2006-2008 Lincoln Mark LT Models ( Fit Models With 4 Full Size Doors That Open In The Same Fashion ). Side Bars: 4 Inch Oval Shape Side Step Ford Nerf Bars. Features: Heavy Duty T-304 Stainless Steel Chrome Side Step Bars with 5 years Warranty against Rust and Corrosion. 465 lbs. Weight rating. Easy to Install: Easy plug and play installation. Step Bars are positioned high and tight for a better fit and cleaner look. Professional installation is recommended. Warranty: High quality standard. Limited 60 days manufacturer warranty.