REPLACEMENT OEM NUMBER — Replaces airlift 57275 LoadLifter 5000 ultimate plus kit. EXCELLENT PERFORMANCE — Up to 5,000 pounds of load leveling capability, adjustable air helper springs level your load, increase your safety and comfort with no load, loaded, or towing on any road condition. PACKAGE — 2pc of air bags, all brackets, installation manual, bolts and nuts you need for installation, inflation valves, elbow fittings, and tubing. EASY TO INSTALL — With strict production standards, air helper spring kit are designed to match the original equipment. You can follow our installation manual and complete the installation step by step.