Worcester Bosch Return Manifold 87161064420 – Refurbished Full Unit

Leaks from the plastic manifold or a failing diverter valve are among the most common Worcester Greenstar boiler faults. The Worcester Bosch Return Manifold 87161064420 is a fully refurbished genuine replacement unit that resolves both issues in a single swap, restoring reliable heating and hot water performance across a wide range of Greenstar CDI, Si, and i boiler models.

This is a complete full unit, supplied ready to fit with all necessary components included: all seals, Worcester PRV (pressure relief valve), diverter valve with motor head, flow sensor, and flow turbine. Every unit is professionally refurbished and quality-checked before dispatch. Supplied with a 12-month warranty.

What's Included

• Return manifold complete unit
• All necessary seals
• Worcester PRV (pressure relief valve)
• Diverter valve and motor head
• Flow sensor
• Flow turbine

Key Features

• Manufacturer Part Number: 87161064420
• SKU: RET-1976-A-BC
• Genuine Worcester Bosch component
• Fixes leaking manifold and diverter valve faults
• Condition: Refurbished | Warranty: 12 Months
• Weight: ~900g | Dimensions: 20 × 20 × 25 cm

Compatible Boiler Models

Greenstar CDI / CDI HE Series: Combi 25/30/35/40 CDI, Combi 27/30/37/40/42 CDI HE (NG & LPG)

Greenstar CDI Classic Series: 29/34/38/42 CDI Classic (standard & ERP, NG & LPG)

Greenstar i System Series: 12i, 15i, 18i, 24i (NG & LPG)

Greenstar i Junior HE Series: 24i Junior HE, 28i Junior HE (standard & Mk5)

Greenstar Si Series: 25Si, 30Si (NG & LPG)

Greenstar CDI Classic System ErP: 30/35 CDI Classic System ErP (NG & LPG)

Important Notes

Verify your part number matches 87161064420 before ordering. Installation must be carried out by a Gas Safe registered engineer. All prices inclusive of VAT.