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✓Price
$38.99
Gunson G4055B Colortune / Hi-Gauge Adaptor Kit 12mm
★★★★★
$38.99
Quantity
1
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About this item
- Adaptor for Hi-Gauge Compression Tester, Part No. G4101 and Colortune, Part No. G4074.
- Thread size: 14mm to 12mm.
- Suitable for classic motorcycles and two stroke engines.
- Kit contains: 14mm to 12mm thread adaptor, gas seal washer and hex key.
- Other adaptors available, Part Nos. G4055A (10mm), G4055C (14mm tapered seat), G4055D (14mm long reach) and G4055E (18mm).
Product description
G4055B - Gunson Hi Gauge and Colortune Plug Adaptor Kit 12 mm Thread G4055B. A kit to convert the thread on the popular Gunson Colortune and Hi Gauge Compression Tester. Fits most sizes of modern spark plugs for modern and classic cars as well as motorcycles, garden machinery and boats. Contents 1 x thread adaptor 12 mm, 1 x gas seal washer, 1 x hex key. Additional Information compression tester adaptor, for use on colortune and Hi Gauge. Suitable for most modern and classic cars. Available in additional sizes 10 mm, 12 mm, 14 mm and 18 mm.
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Customer reviews
What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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