Worcester Bosch Supply Manifold (CH) 87186445570

The SUPPLY MANIFOLD (CH) is a Worcester Bosch central heating manifold for Greenstar combi appliances. It is manufacturer part 87186445570 and forms part of the boiler’s central heating flow circuit. It connects and distributes heating circuit flow within compatible Greenstar 2000 Combi and Gr2300IW models.

• Visible water, weeping or staining around the manifold body or its connections.
• System pressure loss that cannot be traced to another part of the heating circuit.
• Restricted or uneven heating flow, such as poor circulation through the central heating circuit.
• Corrosion, scale build-up or physical damage on the manifold.
• Leaks from the manifold joints or seals where it connects to the boiler pipework.

• Confirm the appliance model against the Fits list, including the 25 C or 30 C and LPG or NG variant.
• Check the existing part number 87186445570 to ensure the manifold matches.
• Confirm the existing component is the CH flow manifold before ordering.
• Check whether any seals or washers can be reused, as no additional components are confirmed in the supplied data.