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🔧 Upgrade your compression game with precision and style!
The Gunson G4055B Colortune / Hi-Gauge Adaptor Kit 12mm is a precision-engineered thread adaptor designed to convert 14mm to 12mm threads, compatible with Gunson's popular Colortune and Hi-Gauge Compression Tester tools. Lightweight and compact, it includes a gas seal washer and hex key, making it ideal for classic motorcycles, two-stroke engines, and a wide range of modern vehicles. Manufactured by The Tool Connection Ltd., this adaptor ensures reliable, airtight compression testing with trusted Gunson quality.
| Asin | B002WMZD0Q |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | 116,451 in Automotive (See Top 100 in Automotive) 648 in Car Spark Plugs |
| Brand Name | Laser |
| Compatible With Vehicle Type | Car, motorcycle, truck, van, bus, UTV, ATV |
| Core Material | Copper |
| Country Of Origin | China |
| Customer Reviews | 4.3 4.3 out of 5 stars (76) 4.3 out of 5 stars |
| Gap Size | 12 Millimeters |
| Global Trade Identification Number | 05052436028689 |
| Included Components | 1 x Gunson Adaptor Kit 12 mm |
| Item Type Name | Gunson Adaptor Kit 12 mm |
| Item Weight | 0.04 Kilograms |
| Manufacturer | The Tool Connection Ltd. |
| Manufacturer Part Number | G4055B |
| Manufacturer Warranty Description | 12 Month |
| Model Number | G4055B |
| Oem Equivalent Part Number | G4055B |
| Thread Size | 12 mm |
User
Useful
Good value and quality very easy to use.
User
Sparkplug adaptor
Great product quality and price
User
The best way to improve the capabilities of your Gunson Colour Tune!
The standard 14mm Colour tune is acknowledged to be one of the most effective ways of tuning a traditional carb engine. The 12mm adaptor allows you to extend these capabilities to motorcycles and other engines using the smaller 12mm spark plugs.
User
Don't use the copper washer !
Well made and may work in a lot of cases. I bought it to use on an old Honda motorbike and it turns out that copper washer is just slightly smaller that the recess around the plug hole thread. When you tighten it down to get a seal the washer spreads slightly and stays firmly put when you remove the adaptor. Hours of 'fun' trying to get it out when its deep in the middle of the head ! Will use it once I've got an 'O' ring to fit and a soft washer to seal the adaptor to the compression tester.
User
Can be used on colourtune plugs
I was able to resurect my old colourtune plug with this adapter to tune my Goldwing 1000 carbs, excellent product.
User
Did the job
Did the job
User
Four Stars
Great bit of kit for bike sounds and runs better.
User
It's an adapter, it adapts
Bought this to test compression on a motorbike, It works :-) Screw it on to the compression tester and press the starter.
User
Excellent produit
Quasi indispensable pour le réglage aisé de la richesse d’une combustion avec carburateurAttention à ne pas le laisser dans un moteur en fonctionnement trop longtemps car il finira par claquer
User
Good product
Perfect fit
User
Ottimo
Perfetto addatore
User
Réducteur
Le réducteur du côté M14 et où se connecte le Gibson qui est en M12 ? Ça serre à rien.Je cherche un adaptateur de M14 côté culasse et de M12 côté Guindon le produit ne serre à rien.
User
Works as described. Used with 14mm kit. No problems.
Works as described. Used with 14mm kit. No problems.
Trustpilot
3 days ago
1 day ago