Mira Excel thermostatic cartridge assembly (451.71)

Mira Excel thermostatic cartridge assembly (451.71) - main image 1 Mira Excel thermostatic cartridge assembly (451.71) - main image 2


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£139.95 (£116.63 ex. VAT) + Free standard UK P&P* Lowest Price Guarantee
In Stock RRP £202.15
  • Product Description:

    Mira 451.71 Excel thermostatic cartridge assembly.

    This product is for shower models made after 2003.

    For Mira Excel/Select models prior to 2003, please see the Mira 903.33 thermostatic cartridge assembly instead.

    Product code also known as Mira 1.451.71.3.

    The Mira Excel thermostatic cartridge assembly (451.71) is a genuine, brand new Mira product, covered by a minimum 1 year Mira manufacturer's guarantee.

    Available for same day despatch if ordered before 3:30pm Monday-Friday (otherwise despatching will be on the next working day). For the delivery options available for this product, please add it to your Basket or see our delivery options page.

    Not what you're looking for? See all Mira Shower Cartridges or try our unique Shower Spares Finder.

    For advice on this or any product, please call 01452 619836, email us at support@showerspares.com, or see our contact page.

    Product Specifications:

  • The Mira Excel thermostatic cartridge assembly (451.71) will fit the following 6 products.

    List(s) are sorted by product type and then alphabetically.

    Hover overTap any icon below to see a preview of that model.

    May fit other products.

    If you are unsure of your product model, or would like more information, please contact us.

  • A selection of the latest reviews for the Mira Excel thermostatic cartridge assembly (451.71) can be read below:

    • Fast delivery, easy to fit with the great online video.

      Fakhar Naz Khaliq

    • Fantastic service, Ordered, received parts next day - all fitted & working fine.


    • I paid for next day delivery and it was delivered exactly on time before 1. Great communication from the company. The shower part was exactly as described and was easy to fit and worked perfect once fitted. I would use this company again for shower spares.great to have a company who does exactly as it says it will.


    • Mira shower thermostat was of first class quality & had it fitted & working within an hour of receiving it. No problems whatsoever.

      Leonard Johnson

    • Placing the order was easy. The shower valve arrived within a couple of days and I was told when it would be delivered.
      Installation was straightforward, following instructions and the original documentation when the shower was installed. All good.

      R. Bell

    • Arrived quickly.

      Bryan Rance

    • Quality spare part, easily fitted and did as it should.

      Peter Saxby

    • Delivery within 24hrs. Great service

      Frederick Neale

    • Very prompt service, part came in less time than I thought it would take, which meant we were not without the shower for than a day five stars all round.

      Les Rawlins

    • Genuine Mira part complete with all accessories (inc silicone lube) and complete instructions; prompt delivery, and saved lots of money.


    • 1st class

      Trevor Davies

    • Replacement part as per the original. From order placement to delivery less than 48 hours, absolutely great. The part was also delivered in appropriate but minimal packaging which was also pleasing.
      Part was found on website really easily.

      John Rudge

    • Works perfectly

      Lynden Davies

    • Top service, quality part, easy to fit, excellent speedy delivery.

      Frank Clarke

    • speedy service. very impressed.

      Ranulph McLauchlan

    • Very good product and the lowest price I could find. Sent rapidly.

      Sarah-Jane Edwards

  • Do you have a question about the Mira Excel thermostatic cartridge assembly (451.71)?

    Click the button below to send a question to one of our expert members of staff and we will email you back a direct response. If we feel the information might be useful to other customers, we will also show your question below for others to see.

    Ask a Question

    • Hi, I have this cartridge and the hot and cold settings are all to cock when I tried to clean it. Does the new one come ready set for use? Do I just pop it in and away you go? Thanks

      Hello, it is ready to fit, you may have to tweak the max temp setting, full instructions in with the new part.

    • I have a Mira excel shower post 2002 and the hot water supply stopped so I pulled the cartridge out and found that the hot water inlet wasn't opening as the plastic that slides the Bakelite plate has snapped. just wondering if that part can be sold separately?

      Hello, very sorry, but Mira do not do spares for the cartridge, just a complete cartridge.

    • how do I stop my Excel from dripping

      Hi, you will need to replace the Mira Excel cartridge 451.71, there is no way to recalibrate the cartridge.