Double your pump warranty to 4-years on 5-HP, 2-stage compressors. If you own an Industrial Air 5 HP 2-stage air compressor, then keep your investment in top condition by ensuring it receives proper maintenance. The maintenance kit for 5 HP, 2-stage Air Compressors provides the required components to help optimize your compressor's performance and enhance equipment longevity. This maintenance kit extends the pumps warranty up to 4-years. Kit must be purchased within 30 days of your air compressor. The original sales receipts for both the air compressor and maintenance kit along with the filled out checklist validate the warranty.