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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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£159.95 (£133.29 ex. VAT) + Free standard UK P&P* Lowest Price Guarantee
In Stock RRP £216.31
  • 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:

    • I ordered from NSS after finding one of their really helpful ‘how to’ videos online, which went as far as giving the right part numbers. Good price, rapid delivery, easy fit and a shower that is as good as new.

      Mark Langrill

    • Really excellent service

      Steve Alger

    • Easy to fit , excellent price and quick delivery.


    • I am not a plumber and after watching National Showers Spares how-to video on YouTube I found the part easy to fit, it was a straight replacement for the old one - in and out done in under half an hour.
      Everything you need came with the kit, new seal and Silicone grease, all made to the same quality as the original one.

      Mark Warrener

    • Easy to find on website and parts easy to fit also there are videos to follow on installation

      Tom Anderson

    • good quality product, easy to fit following your
      you tube video fitting instructions

      Brian Wharton

    • Very pleased with the overall service from ordering through to delivery.

      Stephen Thorne

    • good quality product and very easy to fit.
      excellent service and would recommend to anyone.

      Peter Dyson

    • Arrived on Time Excellent service and video was very helpful.

      Andy Bartlett

    • Very good replacement unit that was very easy to fit. The kit includes replacement filters, a gasket and small silicone grease.
      Would definitely recommend.

      Antony Bayliss

    • Excellent service, next day delivery, easy to fit and all working ok.

      Thomas Williams

    • Item fits and works perfect

      Marek Szulczynski

    • Easy instructions to follow, but would also recommend viewing the online NSS video. If you are changing the cartridge think about ordering the temperature know & flow control set at the same time

      Paul Ridge

    • Easy to replace and shower is as good as new.

      Graham Leslie

    • Excellent service from Showerspares. Replacement shower cartridge arrived next day, couldn't ask for more.

      Edward Jones

    • Parts were easy to find in n site
      Delivered when they said

      Paul Abbott

  • 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.

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