The Pump Booster, SKU 11120856A, improves coolant circulation in ACC/ Valeo / Spheros commercial rear heater systems. This Spheros/Valeo/ACC circulation booster pump helps move coolant through the heating loop so the system can distribute heat more consistently across buses and fleet vehicles.
Use Case: Use this booster pump when a rear heater system struggles to circulate coolant, produces uneven heat, or needs a replacement pump during HVAC service.
Compatibility: Listed for Spheros/Valeo/ACC rear heater system service.
Frequently Asked Questions
Use this booster pump when a rear heater system struggles to circulate coolant, produces uneven heat, or needs a replacement pump during HVAC service.
Confirm the SKU, system model, and fitment against the vehicle VIN, body build, and HVAC unit before ordering.
Match the part number, connector or mounting style, hose or belt size, and any listed cross references to the part being removed before installation.
