142-3321 – Toro Pump, 5.3 GPM (Genuine Toro OEM Part) The Toro 142-3321 Pump (5.3 GPM) is a genuine OEM liquid pump designed to deliver consistent flow and reliable performance in Toro spraying systems. Rated at 5.3 gallons per minute, this pump supports proper pressure and volume for accurate chemical and liquid application on compatible Toro equipment. Manufactured to Toro original equipment specifications, this pump provides dependable operation, precise fitment, and durability in demanding commercial spraying environments. Using a genuine Toro pump helps maintain factory-approved performance and protects the integrity of the spray system. Product Details Manufacturer Part Number: 142-3321 Brand: Toro Part Type: Spray Pump Flow Rate: 5.3 GPM System: Spray / liquid delivery system OEM Status: Genuine Toro OEM replacement Function Delivers consistent liquid flow for spray applications Maintains proper system pressure and volume Supports accurate chemical distribution through spray booms Designed for reliable operation in professional-use spray systems Compatible With The Toro 142-3321 Pump is used on select Toro spray systems and liquid valve assemblies, including but not limited to: Toro Spray Systems 30-Gallon Spray Systems SprayMaster® Series 36" SprayMaster 46" SprayMaster 52" SprayMaster Max (5 GPM models) Z-Spray® Series ZS3624 ZS4230 ZS4630 ZS5260 Tank Kits 7-Gallon Isolated Tank Kits (Compatibility varies by model number, serial range, and system configuration. Always verify using your exact Toro model and serial number before ordering.) How It’s Used This pump installs within the spray system tank or liquid valve assembly to supply pressurized liquid to the spray boom. Proper installation ensures consistent spray output and reliable system operation. Refer to the equipment owner’s manual for installation, priming, and calibration procedures. Suggested Maintenance Inspect pump regularly for leaks or abnormal noise Flush the system after use to prevent chemical buildup Check fittings and hoses for secure connections Replace the pump if flow rate or pressure becomes inconsistent Use only genuine Toro pumps to maintain system reliability
