Worcester Bosch Return Pipe 87161140780

The Worcester Bosch return pipe, part number 87161140780, is a pipe component used in the return circuit of Worcester Greenstar Highflow combi appliances. It is manufactured by Worcester Bosch for the Greenstar Highflow 440CDI and 550CDI range. The return pipe carries heating water back through the appliance as part of the sealed system circuit.

• Visible weeping, staining or standing water around the return pipe connections
• Corrosion, pitting or scaling on the pipe surface
• A persistent pressure loss on the sealed system that cannot be traced to other components
• Soot or debris build-up on the pipe indicating a disturbed or leaking joint
• Kinked, deformed or damaged pipework found during servicing

• Confirm the appliance model and GC number against the fit list above
• Check whether the appliance is the NG or LPG variant, as both are listed
• Verify the existing pipe is the failed component before ordering, as access varies by model
• Have the appliance isolated and drained before fitting