Attention: 3″ lift kit will raise the front of your truck by a true 3″, but the actual thickness of spacer is less than 3″. (Spacer thickness < Lifting height) Vehicle Compatibility: This lift spacer Only fit for 2005-2023 F250 F350 Super Duty 4WD. (NOT fit 2WD) Excellent Function: Increased ground clearance to use larger tires/wheels. Levels the front with the rear of the vehicle, improve the stance. Maintains factory ride quality. Easy Installation: Simple bolt-on in about 1-3 hours, no special tools are required. A front end alignment back to factory spec is recommend after installing. High Quality: MZS leveling kit are CNC machined out of billet aluminum, high precision and stability, strong & anti-rust.