image of Bosch 520 Super 4 Spark Plug x4

Item: 170175

Bosch 520 Super 4 Spark Plug x4


(Unit price: £5.37 Ite)

How can I get it?

FREE Click & Collect

  • Description
  • Specification
  • Reviews
  • Delivery Options
  • Help & Advice
  • Buying Options
  • Bosch 520 Super 4 Spark Plug

    Improve your engine's performance with the Bosch 520 Super 4 Spark Plug. Featuring a unique design, this spark plug does more than a conventional spark plug throughout its service life.

    Bosch 520 Super 4 Spark Plug Extra Info

    • Superior engine versatility
    • Electrode gap adjusted ex factory
    • Noticeable improvement in acceleration
    • Significantly improved engine smoothness

    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
  • Rated 5 out of 5 by 8 reviewers.
    Rated 5 out of 5 by best value i always want to use Bosch product for my car they are good and long last best perform , and this plug are 4 pack in good value of money from halfords only 06 March 2016
    Rated 5 out of 5 by Fantastic product Very good performance. more than expected. I would recommend. 05 October 2013
    Rated 5 out of 5 by good improvement Good spark plugs made my car run so much smoother and I'm noticing a slight improvement on fuel aswell. 19 September 2013
    Rated 5 out of 5 by Far superior I used these as my current plugs were due a change. All I can say is WOW!!!! Better performance and economy!! What more do you want?? 01 July 2013
    Rated 5 out of 5 by This product has great features Read the review's, thought I'd give them a go. Big change for the better when it comes to power delivery and no more chugging. 06 March 2013
    Rated 5 out of 5 by Great product Used these plugs to replace old ones worked great. 02 January 2012
    Rated 5 out of 5 by Bosch 520 Super 4 Spark Plug x4 All in all, a good product..Fitted in my 97 Corsa, n wot a difference. Instant acceleration.Does wot it says on the tin. 02 September 2011
    Rated 5 out of 5 by top notch well happy I always use bosch super 4 spark plugs, the reason being 4 electrodes give a bigger and better spark, the bigger the spark the better the bang. 23 March 2011
    • 2016-09-23 T09:03:45.640-05:00
    • bvseo_lps, prod_bvrr, vn_prr_5.6
    • cp-1, bvpage1
    • co_hasreviews, tv_8, tr_8
    • loc_en_US, sid_170175, prod, sort_default
    1-8 of 8
    • Standard Delivery

      FREE within 4 working days on all orders over £30 (Halfords products only)

    • Next Day Delivery

      Order by 8pm for delivery tomorrow (Mon - Fri)

    • Named Day Delivery

      Choose your delivery day (Mon - Fri)

    • Saturday Delivery

      Order by 8pm Friday for delivery on Saturday

  • 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.

Live Chat

Help and Chat

We're sorry – all our advisors are a bit tied up at the moment!

To contact us by phone or email click the button below to get in touch.

Contact Us

We're available to chat 7 days a week:

Live Chat Opening Hours:

  • Monday Friday

    08:00 22:00
  • Saturday

    08:00 22:00
  • Sunday

    08:00 22:00
  • Bank Holidays

    08:00 22:00
Bosch Spark Plugs

Bosch 520 Super 4 Spark Plug x4

£21.49 Bosch 520 Super 4 Spark Plug features a unique design to help improve your engine's capabilities