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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£156.00 (£130.00 ex. VAT) + Free standard UK P&P* Lowest Price Guarantee
In Stock RRP £224.98
  • 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:

    • Manufacturer replacement part. Good fitting instructions (and video). Excellent price compared to local suppliers.

      David Lowthion

    • So pleased with this Mira shower cartridge. Easily fitted and shower is now working perfectly. Excellent price and arrived quickly.

      Patricia Thompson

    • Excellent price, postage & delivery. Product exactly as spec.

      Mike Anderson

    • Product and part works and fix my shower.
      Delivery time is excellent


    • I expected a genuine Mira shower replacement cassette to work faultlessly. It did.
      Delivery was quick and efficient.

      Richard Smart

    • excellent

      Brian Hooper

    • Fast delivery and part very easy to fit. Will definitely use you again. Thank You.

      Michael Cox

    • Excellent service part went in a treat saving a lot of money by not having to purchase a full unit.(YouTube video there to if you need them )

      Philip Hadfield

    • From ordering to delivery was extremely quickly accomplished. Before fitting of the cartridge I watched the excellent 'How to' videos, which were an invaluable source of information, I'm not a plumber but I was then able to quickly install the cartridge. One problem I experienced was the thermostat heating control, which, even now, I don't think I have it right as the temperature of the shower is hot enough to shower around the number five on the control; however, I don't believe this to be a problem. All in all an excellent product with excellent fitting instruction à la video instructions. First Class.

      Stephen Harris

    • The cartridge arrived in time, well packaged and with all the necessary seals. Easy to fit and working perfectly. Once again a great service from National Shower Spares. Highly recommended.

      David Diamond

    • Ordered shower cartridge replacement for mira excel, was told it was'nt in stock for 3 days if i did'nt mind waiting, i prefer honestly all day long, i told them that my plumber had found one so i cancelled, when plumber came it was the wrong one,i contacted nss and it was no problem, arrived the next day, great customer service with honestly and reliability and at a good price, they even do you tube vids to change the part yourself, win win, thank you.

      J Oldham

    • Part was an exact fit and easy to replace

      Anthony Edwards

    • From start to finish this was a very efficient service , starting with a number of questions from me regarding the parts required etc . The order was place and the goods received the next day. Great Service

      Stewart Farmerey

    • Good service and delivery. Parts and instructions clear. Good YouTube video showing installation. Would use again.


    • product arrived as ordered. Arrived on time.
      Did the job first time!!

      Anthony McNamara

    • Faultless service.

      Neil Austen

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

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    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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