Compressed Height: 4.60"; Top Plate Diameter: 10.3"; Bottom Plate Diameter: 10"; Bottom Plate/Piston Type: C-Composite Bellow Type: Rolling Lobe; Top Plate Hole/Stud: 2; Bottom Plate Hole/Stud: 1 Note: Make sure to check and confirm the compatibility/OEM of vehicles before installation. 18 Months Warranty - This product is covered for one year or completion of 100,000 miles since installation or 18 months after your purchase, whichever comes first. Replaces OEM: 1R13-130AIR SPRING RL PBMeritor MPA & RHP11 Axle ModelsExtended Length: 13" Compressed Length: 4.60", Axle Model - MPA,RHP11 Compatible with Other Brands & Their Part Numbers:Fits Automann: 566.ER8729, AB1DK25D-8729, AB1DK28C-8617, AM8729, AMAB1DK25D8729Fits Batco: 10-98729Fits Dayton Parts: 352-8729, 452-8729, 452-8729LFits Fleetrite: FLT1R13130Fits Freightliner: FI W01 358 8729, TDA A2258F1410Fits Meritor: A2258F1410, FS8729Fits OE Aftermarket: 14849-HDV8729Fits Paccar Parts: AS27920, RL87290Fits Rockwell International: 202796, A-2258-F-1410, MR13130Fits Torque: TR872918 Month Warranty - This product is covered for one year, 100,000 miles after the installation, or 18 months after the purchase, whichever comes first. The product’s warranty is only active when the parts have defective material or workmanship defaults. Inappropriate application will lead to the dismissal of the warranty. Additionally, the warranty doesn’t cover the parts that fail or get damaged due to misuse, misapplication, or accident. If the customer wishes to return/replace this product under warranty, reach out to us. The team will verify by doing a thorough inspection and if they find a defect that is covered in above mentioned warranty; the product will be replaced without any charge. We disclaim liability for labor or consequential damages of any nature. We request the customers to wait until the claim is resolved and settled from our end after replacement is requested under warranty.