Holts Radweld 250ml



Fitted bundle deal

includes Accessories + Fitting

Item: 741439

Holts Radweld 250ml


(Unit price: £23.96 per litre)

How can I get it?

FREE Click & Collect

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

    The Holts Radweld s an easy to use repair for radiator leaks which doesn't damage or clog the system. It also prevents future leaks, to help keep your car on the road for longer. It's easy to use - simply pour and fix.

     Holts Radweld Extra Info

    • Seals leaks in minutes
    • Simply pour and fix
    • No clogging or damaging effect
    • Suitable for use with all car radiators
  • Holts Radweld 250ml is rated 4.1 out of 5 by 11.
    Rated 5 out of 5 by from It does work I have a 2000 volvo 1.8 estate which I use for work (bought for 400 quid!). I had to frequently top up coolant due to a leak in the rad. After 4 days there was usually no coolant visible in the reservoir at all. As the car is nearly 20 years old and I don't think it had a coolant flush in donkey years, I flushed out the old coolant and refilled with fresh new coolant and added the Radweld and let the engine run for 20 mins. Nearly 2 months on....and I've only had to top up with half a cup of coolant so huge difference! I went from topping up after every 4 days to once every 2 months so who knows if an extra bottle of Radweld will completely cure the leak. For now I can't really complain and am happy with result. Well done Radweld.
    Date published: 2018-05-21
    Rated 5 out of 5 by from Worked perfectly I had some doubts about using this after reading some reviews online but it has worked perfectly!
    Date published: 2017-03-03
    Rated 1 out of 5 by from It did nothing Slight leak on hose fat hose that feeds the radiator and after following instructions to the letter and driving over 50 miles it's made no difference at all. £4.99's worth of brown liquid.
    Date published: 2015-06-06
    Rated 4 out of 5 by from Holts Radweld Did exactly what it said it would it blocked up a leak and was able to use my car until I got a new radiator following week
    Date published: 2013-12-02
    Rated 5 out of 5 by from Top marks My radiator blew a huge leak where I was putting in 4+ litres of water a day. Used radweld as per instructions. Half an hour later "hey presto" no leak. I have checked levels for 5 days, no topping up since repair. I'm completely impressed!!
    Date published: 2013-11-19
    Rated 5 out of 5 by from no leak ok alarm bells and flashing coolant warning. opened the coolant and it was empty. leak somewhere. used the radweld and topped up with coolant sucess no more bells can drive confidently
    Date published: 2013-05-21
    Rated 5 out of 5 by from Radweld 250ml Great stuff, did wot it said it would do, will defo buy again if need to .
    Date published: 2013-01-21
    Rated 5 out of 5 by from Excellent Product Bought this product as had small crack in heater matrix which was allowing / causing smoke to come into car through air vents when I had the heaters on. Used this product, followed instructions and so far so good. No more problems. Would thoroughly reccomend.
    Date published: 2012-10-26
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    • clientName_halfords
  • 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 Radweld 250ml

£5.99 Fix leaks in your car radiator at home with Radweld.