Holts Speedflush 250ml



Fitted bundle deal

includes Accessories + Fitting

Item: 741462

Holts Speedflush 250ml


(Unit price: £19.96 per litre)

How can I get it?

FREE Click & Collect

  • Description
  • Reviews
  • Delivery Options
  • Help & Advice
  • Buying Options
  • Holts Speedflush

    The Holts Speedflush is a fast acting cleaner which clears your radiator and water channels, and can be used with all types of radiator to prevent overheating and extend the life of your car. Drain system before use.

    Holts Speedflush Extra Info

    • Fast cleaning for radiators and water channels
    • Prevents over-heating
    • Suitable for use with metal or rubber hoses
    • Suitable for all types of radiator
  • Holts Speedflush 250ml is rated 4.4 out of 5 by 5.
    Rated 5 out of 5 by from Good cleaning action Clean all internal parts properly. Although the time stated is not sufficient. I found that by leaving it in the system for at least 1hr it cleans everything properly.
    Date published: 2017-11-18
    Rated 4 out of 5 by from SPEEDFLUSH Follow the instuctions and the product does what it is supposed to do, leave it in for a few days in fresh water only, i.e. no anti-freeze (warmer months) and it'll flush a good deal of rust and other pollutants from the coolant system.
    Date published: 2016-12-08
    Rated 4 out of 5 by from MrH I used this one my 1997 Range Rover 4.6 V8, it did exactly what it says on the tin really, but I would've liked a slightly larger bottle because the size of my cooling system, had to flush it twice more after this to clear all the channels
    Date published: 2013-07-25
    Rated 4 out of 5 by from Radiator Flush Used this product on a 05' Ford Ka to clean the cooling system before replacing the antifreeze. I intended to buy the two part flush, but it was not in stock at my local store. It worked really well and removed all of the sludge in a single flush. Afterwards I ran deionized water through the system and it came out clear at the drain plug.
    Date published: 2013-04-02
    Rated 5 out of 5 by from excellent product didnt think that it would do much but it did very good product easy to use and followes dosent take that long. value for money.
    Date published: 2012-03-19
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  • UK Delivery

    £3.99 NEXT DAY Delivery available on orders under £40 placed by 8pm*

    Your delivery date will be communicated at checkout. Delivery times are Monday to Saturday.


    UK Delivery

    FREE Click & Collect - you can reserve an item online and pick it up from a store of your choice

    Simply enter your Postcode on the product page to check availability, and select Click & Collect at checkout. What's more, you pay for your items on collection. Click here to learn more.

    Items in stock - collect from 1 hour
    If your item is in stock at your chosen store, you can collect it from one hour after ordering online. We'll hold your item in-store for seven days.

    Items not in stock - collect next day*
    If your item isn't in stock, we can order it to your chosen store for collection.
    *If you place your order before 8pm you can collect it from 4pm the following day (except Sundays), and we'll hold your item in-store for seven days.

    Built Bikes
    Collection time will increase by 24 hours if you'd like us to build your bike for you.

    Please note that items sent directly from the supplier need to be ordered by 3pm for collection two days later. All delivery times will be shown during checkout.


  • You can buy this product from one of our carefully selected Approved Partners. The full list of options available are below. Simply add your chosen option to your basket and proceed to checkout when you're ready.

    You can purchase products supplied by Halfords and selected other suppliers on halfords.com.

    Checkout is always via halfords.com and all payment will be taken via halfords.com. In checkout the products will be split into separate deliveries for each supplier.

    Showing 1 - X of our buying options
    Price Seller Info Purchase

Some of the parts we sell here at Halfords have been reconditioned. These will carry a Refundable Deposit or an extra surcharge amount. When you add one of these reconditioned items to your basket, we'll add this extra cost automatically.

Once you've sent us your old item we'll check it over, and then refund you the full surcharge as long as everything is ok.

Before you return your old unit please make sure it's in re-serviceable condition. So if you're returning caliper casings, you'll need to double check they aren't badly damaged or broken. If the part you've sent is found to be unserviceable, we reserve the right not to refund the surcharge.

Please note that if you're returning your old unit to our National Returns Centre then this will be at your own expense.

Holts Radiator Repairs

Holts Speedflush 250ml

£4.99 Prevent radiator overheating with Holts Speedflush.