Worcester Bosch Oil Pump Suntec AS47C 87161570140

The Worcester Bosch 87161570140 is an oil pump built around the Suntec AS47C platform, used to draw oil from the storage tank and deliver it to the burner at the correct pressure and flow rate. It sits within the oil line on Worcester oil-fired appliances, where consistent delivery is what keeps the burner lit and the flame stable. This is a serviceable mechanical component, so it is a common replacement item on older Danesmoor and Heatslave installations.

• The burner locks out repeatedly, particularly after the appliance has been running and then restarted.
• No oil reaches the nozzle, or the pump fails to build pressure when the pressure gauge is connected.
• The flame is erratic, noisy or uneven, with the burner cutting out shortly after ignition.
• Oil is visible around the pump body, shaft seal or the joints on the oil line.
• The pump runs loudly or the drive coupling shows signs of wear and slipping.

• Confirm the appliance model and serial number against the compatibility list, as pump fitment varies across the Danesmoor and Heatslave ranges.
• Check the pump currently fitted is a Suntec AS47C, or that the existing unit carries the alternative number 1019811.
• Inspect the oil line, filter and flexible hose at the same time, since contamination and air ingress can mimic pump failure.
• Oil pump replacement and burner commissioning should be carried out by an OFTEC-registered engineer, with combustion readings taken after the work.