FR78X Bosch Super 4 Spark Plug x4



Fitted bundle deal

includes Accessories + Fitting

Item: 170217

FR78X Bosch Super 4 Spark Plug x4


(Unit price: £5.50 Ite)

How can I get it?

FREE Click & Collect

  • Description
  • Specification
  • Reviews
  • Delivery Options
  • Help & Advice
  • Buying Options
  • FR78X Bosch Super 4 Spark Plug x4

    The FR78X Bosch Super 4 Spark Plug x4 operates on the state-of-the-art air-cushion-spark principle and is the first spark plug to feature four thin ground electrodes with one pointed, silver-plated center electrode.

    This combination is unique in the world and has decisive benefits. The ignition spark always chooses the best path for reliable ignition according to the engine load. The Bosch Super 4 does more than a conventional spark plug. In all situations, throughout its service life.

    FR78X Bosch Super 4 Spark Plug x4 Extra Info

    • Noticeable improvement in acceleration
    • Significantly improved engine smoothness
    • Superior engine versatility
    • Electrode gap adjusted ex factory
    • Please note packaging may vary
    *Image for illustrative purposes only

    Additional Information

    Please check with your vehicle manufacturer or workshop manual to confirm the suitability of this part for your vehicle.
  • Hex Size: 16
    Thread Length mm: 19
    Thread Size mm: 14 x 1.25
  • FR78X Bosch Super 4 Spark Plug x4 is rated 3.5 out of 5 by 10.
    Rated 1 out of 5 by from Renault clio 1.6 gt Purchased these plugs as they were highly recommended by a sales agent in store . Well I would just like to say that there no use for my particular model of car , this I only found out about when I went to a renault garage to ask them to check car as it was running so poorly. So beware renault owners ! Reason being I was told the core temperature of the plug doesn't reach it's temperature fast enough so one minute it's pure sluggish then all of a sudden there's a burst of power. Will be returning these to store even though I haven't got all packaging now and expecting a full refund
    Date published: 2014-06-22
    Rated 5 out of 5 by from Beautifull A great product at great value, easy to install vastly improved performance and fuel consumption for me.
    Date published: 2014-03-23
    Rated 1 out of 5 by from Bosch 510 Super 4 Spark Plugx4 Don't know how they work as they were listed wrongly on their website for my car something I didn't find until I tried to fit them, returned then, got a full refund, went somewhere else and got the right ones, Halford must do better on it's website listings as it is not the first time the website listing was wrong.
    Date published: 2014-03-22
    Rated 5 out of 5 by from Puurrrfect No need to adjust the gap and when the plugs were changed the wife's civic was transformed! Its purring like a kitten. Worth the little bit extra.
    Date published: 2013-11-27
    Rated 5 out of 5 by from Good Item Ordered this online to collect from store. They called to say they didnt have it but would order it from another store. Once in, they called me to say it was available for collection. This saved me a wasted journey and was very convenient. the item itself was easily fitted and is working fine. Good value for money and a good service.
    Date published: 2013-11-04
    Rated 5 out of 5 by from Real good value and a great brand Really cheap compared to products in europarts and you will notice the engine been more powerful and smooth start with these. I was amazed as it fitted in my AUDI A4.
    Date published: 2013-05-23
    Rated 5 out of 5 by from Great service Great product, easy ordering for quick pick up. Perfect.
    Date published: 2013-01-19
    Rated 5 out of 5 by from Excellent 'plugs Have put these in my Chevrolet Lacetti '07 along with a regular service and they're great. Very easy to slot in and the performance has been noticeably better since their installation. I would definitely recommend this product!
    Date published: 2012-11-18
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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 NEXT DAY Delivery available on orders over 40 placed by 8pm*

    Your delivery date will be communicated at checkout and on your confirmation email.

    Delivery times are Monday to Saturday. Next Day delivery not available on all products; including Built Bikes, Bulky items and Web Exclusive products.

    *Click here to learn more.


    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. Bike delivery will take three days, and an extra day if you'd like us to build it 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

    Checkout is always via and all payment will be taken via 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.

Bosch Spark Plugs

FR78X Bosch Super 4 Spark Plug x4

£22 FR78X Bosch Super 4 Spark Plug x4