Vaillant Pump Head 0020025042 / 59866551 – Refurbished | Ecotec Plus

Poor heating performance, boiler lockouts, overheating faults, or insufficient hot water circulation in a Vaillant Ecotec Plus boiler can often be traced to a worn circulation pump head. The Vaillant Pump Head, Part No. 0020025042 (Pump Head No. 59866551) is the direct replacement that restores reliable water circulation throughout the boiler and heating system.

This is a professionally refurbished unit, fully tested before dispatch — giving you a cost-effective alternative to a brand-new pump while maintaining dependable performance.

Compatible Boiler Models

Also fits the broader ecoTEC Plus 612, 615, 618, 624, 630, 637, 837, and 937 range.

Quality. Tested. Backed by Warranty.

Each pump head is fully tested before dispatch to confirm reliable circulation performance. Supplied with a full 12-month warranty for long-term peace of mind.

Delivery & Returns

Orders placed before 1:00 PM (Mon–Fri) are dispatched the same working day. Next-day delivery placed on a Friday is delivered the following Monday; Saturday delivery is available at checkout. Returns are accepted within 30 days under our standard return policy.

Note: Please confirm that part number 0020025042 / 59866551 matches your existing unit before ordering. Installation must be carried out by a Gas Safe registered engineer to ensure safety compliance and warranty validity. All prices include VAT.

Stock Notice: The supplier listing shows only 2 units left in stock at time of writing. Confirm live availability before publishing.