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Gunson Colortune Single Plug Kit 14mm G4074 Tune up Plug

Simonbbc Ignition Solutions
(123482)
Registered as a business seller
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£79.95
Condition:
New
Out of stock176 sold
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£19.61 International Priority Shipping to United States via eBay's Global Shipping Programme
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Located in: Worcs, United Kingdom
Import charges: 
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Delivery:
Estimated between Wed, 30 Jul and Fri, 8 Aug to 94104
Estimated delivery dates - opens in a new window or tab reflect seller's dispatch time, origin postcode, destination postcode and time of order receipt, and will depend on the delivery service selected and receipt of cleared paymentcleared payment - opens in a new window or tab. Delivery times may vary, especially during peak periods, and are an estimate only.
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eBay item number:134834951044
Last updated on 13 Apr, 2025 09:57:55 BSTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging ...
Reference OE/OEM Number
G4074
Country/Region of Manufacture
United Kingdom
Part Manufacturer
Gunson
Ignition Part Type
Spark Plug
UPC
Does Not Apply
Item Condition
New
Intended Use
Modification/ Enhancement
Subtype
Engine Tuning
MPN
G4074
EAN
5018341740740
Brand
Gunson
Type
Single Plug Kit
Manufacturer Part Number
G4074

About this product

Product Identifiers

Brand
Gunson
MPN
G4074, GUNG4074
Manufacturer Part Number
G4074
EAN
0689789506875
GTIN
0689789506875
UPC
5018341740740, 0689789506875
eBay Product ID (ePID)
8032599622

Product Key Features

Type
Single Plug Kit

Item description from the seller

Seller business information

I certify that all my selling activities will comply with all EU laws and regulations.
VAT number: GB 995303103
I provide invoices with VAT separately displayed.
CRN: 07563900
Additional information:
Please call our technical team or sales helpline for support or further product assistance
About this seller

Simonbbc Ignition Solutions

99.9% positive Feedback•299K items sold

Joined Aug 2002
Usually responds within 24 hours
Registered as a business seller
Powerspark Ignition are the leading UK suppliers of ignition and fuel components for classic car enthusiasts. Our product range and depth of knowledge is unrivalled. Can't find what you're looking ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable postage cost
5.0
Delivery time
5.0
Communication
5.0

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Seller Feedback (132,652)

All ratings
Positive
Neutral
Negative
  • u***s (1437)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    No matter how l adjusted the carb mixture the window always showed a blue colour. So didn't leave me fully confident it was worth it's price.
  • k***0 (35)- Feedback left by buyer.
    More than a year ago
    Verified purchase
    The tool does work but the plastic parts are so flimsy. The 2 tubes barely fit together and if you have any engine vibration, (mine was a V8 and not easy to find room) the two pieces would fall apart from each other. Finally taped them together and item did work although there was some arcing within the tube ( not sure why) that interrupted the viewing. All in all, it was “ok”. Better actual instruction with drawings or pictures would have helped also. Also UK sent, took extra time, but ok.
  • y***y (2337)- Feedback left by buyer.
    More than a year ago
    Verified purchase
    Worthy of a propper feedback .... unpacked it ! Fitted to car adjusted front carb , fitted to rear cylinder ! Adjusted took it off and road tested all in 10mins. Perfikt item. Love it
See all Feedback

Product ratings and reviews

Learn more
4.7
155 product ratings
  • 125 users rated this 5 out of 5 stars
  • 20 users rated this 4 out of 5 stars
  • 4 users rated this 3 out of 5 stars
  • 1 users rated this 2 out of 5 stars
  • 5 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 125 reviews
  • by phki74
    04 Feb, 2022Most favourable review

    Nice piece of kit, great delivery

    I have been trying to buy one of these for months, then unusually I find a pair for sale u der the guise that you need two if you have twin carbs. This is of course nonsense, back in the day I used a colortune on my rally car with twin 40DCOE carbs having 1 carb choke per cylinder and only 1 colortune and it was perfect. Anyway, I have two now and will see how much better I can tune my MGB. The kit arrived next day and was not an issue. The modern packaging is not as long lasting as the 1980's case and I'm sure I will lose parts eventually... I would have preferred a proper case.

    Verified purchase: YesCondition: NewSold by: stealth-ignition

  • by rumbledog0
    25 Feb, 2022Most critical review

    Colourtune has reduced in size.

    Originally purchased a Colourtune in the late 80's whilst living in the UK. Needed a 2nd Colourtune to tune a twin carburetor single cylinder twin plugged motorcycle engine. The recent purchased Colourtune is approximately half the glass viewing area of the original. This reduction in size makes use of the Colourtune harder to get a clear view of the combustion process in the engine especially as the plug is recessed in the cylinder head. Although a cleaning brush is supplied with the kit no cleaning fluid is supplied. This is obviously a manufacturing anomaly rather than a supplier fault. Supplier delivered the item to New Zealand very promptly, it was well packaged and well priced. A Good Trader, I would certainly trade with the supplier again

    Verified purchase: YesCondition: NewSold by: simonbbc

  • by data_3353
    26 May, 2020

    Works as it's supposed to.

    Well made product, works as it is supposed to and accomplishes what it should. A very useful tool for adjusting carb mixtures. I'm glad I have one. Wish I had a whole set of four, but can manage with just one. Instructions are clear and easy to follow.

    Verified purchase: YesCondition: NewSold by: toolboxkinguk

  • by streetski
    22 Sep, 2020

    colortune works

    Very good product, should have got one years ago, easy to use -with care, if you buy an earlier made one rather than new, you will get a better box to store it in,

    Verified purchase: YesCondition: NewSold by: jjcraceandrally

  • by foolishgimp
    27 May, 2018

    Good as a secondary test

    Great, you can see wether its blue or yellow, and its quite fun, maybe it helps to see which cylinder is misfiring. Really cheap, build quality, I think gunson has gone to the absolute lowest level of quality it can get away with. I suspect the whole kit is bought by gunson for £2 or so.

    Verified purchase: YesCondition: NewSold by: diycarserviceparts

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