Specification Brand : Torque BulletPoint1 : QUALITY - Easy to identify part number permanently engraved on the rubber. 4.5 - 5.00 mm thick rubber that exceeds OEM requirements. 25% stronger 4140 grade steel studs. Stronger composite pistons. Highest leak test ratio after final assembly. BulletPoint2 : SPECS - Extended Height: 12.00" // Compressed Height: 8.20" // Top Plate Width: 10.38" // Piston Width: 10.10" // Weight: 17.00 lbs BulletPoint3 : WARRANTY - Thanks to our superior quality and customer service we started offering our customers industry's first 3-year unlimited mile warranty on our rolling lobe / reversible sleeve air springs. When you get your air spring, please register it through Torque Parts website. BulletPoint4 : FITMENT - Please, call your dealer and ask for the part number. Then, check out if this air bag replaces it. Or, see the diagram picture and make sure all specs match with your air bag. ***Buying an air bag by make and model is one of the most common mistakes. Please, do not buy it by make and model.*** Color : By Part Number CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier1 : 698231938201 ExternallyAssignedProductIdentifier2 : 0698231938201 ExternallyAssignedProductIdentifier3 : 00698231938201 FitType : Vehicle Specific IncludedComponents : Air Spring ItemName : 2 Pack TORQUE Air Spring Bags Replacement For Trailer Air Spring Bags (Please select it by part number) ItemPackageDimensions_Height : 36.8 centimeters ItemPackageDimensions_Length : 31.2 centimeters ItemPackageDimensions_Width : 31.2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : air-springs Manufacturer : Torque ModelName : TR8539 ModelNumber : TR8539 NumberOfItems : 2 OeManufacturer : Firestone OemEquivalentPartNumber : W01-358-9394 PartNumber : 2 x TR8539_02_ ProductDescription : KEY FEATURES OF TORQUE AIR SPRINGS: - Easy to identify part number permanently engraved on the rubber. - 4.5-5.00mm trick rubber that exceeds OEM requirements. - 25% stronger 4140 grade steel studs. - Stronger composite pistons. - Highest leak test ratio after final assembly.