Fits 4WD (Four Wheel Drive) Models with Manual Locking Hubs only Manufacturer Part Number: BC3Z3B396B BC3Z-3B396-B 600-220 Fitment: 2005-2018 For Super Duty 2005-2018 For Super Duty 2005-2018 For F-450 Super Duty 2005-2018 For F-550 Super Duty Installation instructions: STEP 1: REMOVING THE HUB Remove the center cap using a pry bar or screwdriver Remove the snap ring from the hub Pull the hub out If the hub is stuck it with penetrating oil and let it sit for a while Hit it with a rubber mallet from the top and bottom until it loosens and pull it free : INSTALLING A HUB Clean the inside of the hub with a wire brush If available use compressed air to out the debris Push the hub into place Use a rubber mallet to help the O-ring seat Put the snap ring on Replace the center cap Color:As Shown Material:Plastic+Metal Package Contents: 2 x Front Manual Locking Hub Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.