From inside (document excerpt):
Rubber Parts Replacement Kit Cancels: IIK 340M-40-68 IIK 340M-40-69 1-00 Installation Instructions For Kit No. 324806-751 NOTE: Read the entire instruction manual before starting the installation. SAFETY CONSIDERATIONS Installing and servicing of heating and equipment can be hazardous due to gas, system pressures, and electrical components. Only trained personnel should install or service heating and air conditioning equipment.
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The qualified installer or agency must use factory authorized kits or accessories when modifying this product. Refer to individual instructions packaged with kits or accessories when installing. Follow all safety codes. Wear safety glasses and work gloves. Use a quenching cloth for brazing operations. Have a fire extinguisher available. Read these instructions thoroughly and follow all warning or cautions attached to the unit. Consult local building codes and National Electrical Code (NEC) for special requirements. Recognize safety information. This is the safety-alert symbol. When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury. Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation. A99280 Collector Box Drain Tube (Blue and White Striped Inducer Cap or Vent Coupling Inducer Cap or Vent Coupling Collector Box Drain Tube (Blue) Fig.1–Rubber Parts Replacement Kit (Shown in Upflow Orientation) (Series B/110 or later): 58MXA, 58MCA, 58MVP, 350MAV, 355MVP, 490AAV, and PG9MAA. See Table 1 for kit contents. Before installing to servicing unit, always turn off all gas and electrical supplies to unit. There may be more than one disconnect switch. Turn off accessory heater power if applicable. Electrical shock can cause personal injury or death. Table 1–Kit Contents PART NO. 314781-701 314781-702 324157-402 325423-401 KA 69JM300 DESCRIPTION Drain Tube Drain Tube Inducer End Cap Vent Coupling Hose Clamp QUANTITY