The Worcester Bosch 87161202820 CDi Fan Assembly is a genuine replacement combustion airflow component designed to maintain the correct supply of air into the combustion chamber and to expel flue gases safely through the flue system in Worcester Bosch CDi series boilers. This dedicated fan draws in combustion air and helps create the correct pressure conditions required for efficient ignition and stable flame performance, supporting dependable heating and hot water output. A worn, noisy or failing fan can lead to ignition faults, reduced performance or safety lockouts, so fitting the correct OEM-specified fan assembly is essential for restoring consistent, safe boiler operation.

This fan assembly is compatible with Worcester Bosch CDi series boilers that reference part number 87161202820 in their parts documentation. To ensure proper compatibility and fitment, always verify the number on your existing fan or check your boiler’s service information before installation, as combustion airflow components differ between models and control platforms.

Supplied ready for direct replacement, the 87161202820 CDi Fan Assembly integrates with the boiler’s original mounting points and electrical connections without modification when installed by a qualified engineer. Choosing this genuine Worcester Bosch component helps ensure correct combustion airflow, better ignition reliability and consistent heating and hot water performance in compatible CDi boilers.