395 in stock



National Boiler Parts Tyne View Terrace Wallsend Tyne and Wear NE28 6SG United Kingdom


Items purchased with Express Delivery will be dispatched same day via courier to arrive next working day. All items purchased before 2.30 PM Monday – Friday are dispatched same day. Although we do not guarantee it, most of the time we are able to dispatch until 4.30pm. We offer Special Delivery by 1pm, Saturday and Sunday delivery as well. Items with free delivery will be dispatched same day with Royal Mail 2nd Class standard postage unless opted out for 1st class delivery. Please keep in mind that delivery dates depend on Royal Mail and not us.If for any reason we are unable to dispatch the item, we will contact you straight away. If you would like to collect any item, then please contact us prior to arrange an appropriate time. We recommend all gas spare parts should be fitted by a qualified Gas Safe Registered engineer.


Returns must be made within 30 days as per Ebay policy. Important: Please include a copy of the receipt and a brief note of reason for return inside the package along with your contact details. We offer delivery to UK, EU and when possible, rest of the world.

MAIN COMBI 25 30 ECO (10L) CARTRIDGE FOR HYDRAULIC INLET ASSEMBLY 5116017This part fits following boilers:Fits Appliance(s)          GC No.
BAXI DUO TEC 24 HE – 47-075-23BAXI DUO TEC 24 HE A (AFTER SERIAL NO. BTG0815 ISSUE 9) – 47-075-35BAXI DUO TEC 24 HE A (BEFORE SERIAL NO. BTG0815 ISSUE 9) – 47-075-35 BEFOREBAXI DUO TEC 28 HE – 47-075-25BAXI DUO TEC 33 HE – 47-075-24BAXI COMBI 24 HE – 47-075-20BAXI PLATINUM COMBI 24 HE – 47-075-27BAXI PLATINUM COMBI 24 HE A (AFTER SERIAL NO. BMY0815 ISSUE 6) – 47-075-31BAXI PLATINUM COMBI 24 HE A (BEFORE SERIAL NO. BMY0815 ISSUE 6) – 47-075-31 BEFOREBAXI PLATINUM COMBI 28 HE – 47-075-28BAXI PLATINUM COMBI 33 HE – 47-075-29BAXI PLATINUM COMBI 40 HE – 47-075-30MAIN COMBI 25 ECO – 47-467-01MAIN COMBI 30 ECO – 47-467-03POTTERTON GOLD 24 HE COMBI – 47-590-05POTTERTON GOLD 24 HEA COMBI (AFTER SERIAL NO BMX0815 & GNH0815) – 47-393-18POTTERTON GOLD 24 HEA COMBI (BEFORE SERIAL NO BMX0815 & GNH0815) – 47-393-18 BEFOREPOTTERTON GOLD 28 HE COMBI – 47-590-06POTTERTON GOLD 33 HE COMBI – 47-590-19POTTERTON PROMAX COMBI 24 HE PLUS A – 47-393-21POTTERTON Titanium 24 – 47-393-39POTTERTON Titanium 24 combi Erp (serial no. ending in AC) – 47-393-50POTTERTON Titanium 24 combi Erp (serial no. ending in BC & CC) – 47-393-50 BCPOTTERTON Titanium 24 combi Erp (serial no. ending in DC) – 47-393-50 DCPOTTERTON Titanium 28 combi Erp (serial no. ending in DC) – 47-393-51 DC


We are happy to announce that we hold ISO 9001:2015 standards certification.


Monday: 8.30am to 5.00pm Tuesday: 8.30am to 5.00pm Wednesday: 8.30am to 5.00pm Thursday: 8.30am to 5.00pm Friday: 8.30am to 5.00pm Saturday: 9.00am to 12.00pm


We offer a full refund to the customer, please include a copy of the receipt and a brief reason of return inside the package.


We reserve the right to have any alleged faulty items tested by the manufacturer before issuing a full refund or supplying a replacement. The manufacturer may require a qualified gas safe registered engineer’s report before issuing a refund. Please do not tamper with the product otherwise we reserve the right to not replace or refund for the item.


Wrongly purchased items must be returned in their original packaging and will be subject to a 20% restocking fee (this is to cover Ebay and handling fees). All Returns must be unused and returned with their original packaging. We do not accept any not required / wrongly purchased electrical items back (including printed circuit boards).

Below information is for refurbished products with sales options, please read out carefully. If the product does not have a sale option under its’ title, please disregard the following information:

DIRECT SALE: This is when you buy the part outright without needing to send your part back to us.

REFURBISHMENT (EXCHANGE) SERVICE: When you select this service, you agree to send your faulty item to our main address to be reconditioned and sent back to you. Our price includes delivery to you and you would need to pay the postage to send the item to us. In most cases we repair and send the item back the same day of receiving it, please select next day delivery option during checkout to receive the item back the next day.

Please send your faulty part to:

National Boiler Parts
Tyne View Terrace
Newcastle Upon Tyne
NE28 6SG

ADVANCE REPLACEMENT SERVICE: This service is for customers who would like to receive replacement part without sending the faulty one back to us first. We will send you a replacement part the same working day and charge you a £30.00 deposit for your faulty part. Once we have received your faulty part we will refund your £30.00 deposit. Please choose this service if your faulty part is in a repairable condition. If the part is burnt, broken or cracked and not repairable we may refuse to issue a refund for your deposit.  Please keep in mind that if this option or Direct Sale option is not available, we may not have a part in stock to send out first. If unsure please call 0191 263 3708 or email at

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