This Air Lift replacement cylinder is an exact replacement for an original Air Lift 1000 air spring. It is made with sturdy urethane construction and the air fitting is molded in to the spring. This cylinder has a diameter of 4.5 inches and a height of 9 inches. Air Lift replacement cylinders are designed to maintain and/or restore the vehicle to the original ride height. The cylinder should be matched to both the inside diameter and inside height of the vehicle spring at normal ride height. It is better to be slightly undersized rather than oversized. PartNumber : alf80239 Description : AIR LIFT 1000 REPLACEMENT BAG; FOR PN 80539; Title : REPLACEMENT AIR SPRING-RED CYLINDER TYPE Title (Custom) : Air Lift Susp Air Bag Bellows Position : Front Features : Limited Lifetime Warranty (parts) Features : Sturdy urethane construction Title : Air Lift Susp Air Bag Bellows WARNING CA Proposition 65 : Yes WARNING CA Proposition 65 Message : California Warning: Cancer and Reproductive Harm û www.P65Warnings.ca.gov 2009 Ford F-450 Super Duty Base V10.-cc Suspension::Air Springs 2009-2010 Ford F-450 Super Duty Harley-Davidson Edition V8.-cc Suspension::Air Springs 2008 Ford F-450 Super Duty King Ranch V10.-cc Suspension::Air Springs 2008-2010 Ford F-450 Super Duty King Ranch V8.-cc Suspension::Air Springs 2011-2016 Ford F-450 Super Duty King Ranch V8.6651cc Suspension::Air Springs 2005-2008 Ford F-450 Super Duty Lariat V10.-cc Suspension::Air Springs 2010 Ford F-450 Super Duty Lariat V10.-cc Suspension::Air Springs 2005-2010 Ford F-450 Super Duty Lariat V8.-cc Suspension::Air Springs 2011-2016 Ford F-450 Super Duty Lariat V8.6651cc Suspension::Air Springs 2013-2016 Ford F-450 Super Duty Platinum V8.6651cc Suspension::Air Springs 2005-2008 Ford F-450 Super Duty XL V10.-cc Suspension::Air Springs 2010-2016 Ford F-450 Super Duty XL V10.-cc Suspension::Air Springs 2005-2010 Ford F-450 Super Duty XL V8.-cc Suspension::Air Springs 2011-2016 Ford F-450 Super Duty XL V8.6651cc Suspension::Air Springs 2005-2008 Ford F-450 Super Duty XLT V10.-cc Suspension::Air Springs 2010-2016 Ford F-450 Super Duty XLT V10.-cc Suspension::Air Springs 2005-2010 Ford F-450 Super Duty XLT V8.-cc Suspension::Air Springs 2011-2016 Ford F-450 Super Duty XLT V8.6651cc Suspension::Air Springs 2005-2010 Ford F-550 Super Duty Lariat V10.-cc Suspension::Air Springs 2005-2010 Ford F-550 Super Duty Lariat V8.-cc Suspension::Air Springs 2011-2016 Ford F-550 Super Duty Lariat V8.6651cc Suspension::Air Springs 2005-2016 Ford F-550 Super Duty XL V10.-cc Suspension::Air Springs 2005-2010 Ford F-550 Super Duty XL V8.-cc Suspension::Air Springs 2011-2016 Ford F-550 Super Duty XL V8.6651cc Suspension::Air Springs 2005-2016 Ford F-550 Super Duty XLT V10.-cc Suspension::Air Springs 2005-2010 Ford F-550 Super Duty XLT V8.-cc Suspension::Air Springs 2011-2016 Ford F-550 Super Duty XLT V8.6651cc Suspension::Air Springs