Colortune spark plug kit, 14mm

Gunsons colortune 14mm spark plug 'G4074' – Minisport

14 MM Taper Slim Adaptor Kit for Gunson Colortune G4055C

Colortune Kit (single plug) - MRD1005 - Gunson

14 MM Taper Slim Adaptor Kit for Gunson Colortune G4055C

Gunsons thread adaptor 14mm to 12mm (for use on the Alloy cylinder head) 'G4055B' – Minisport

G4055B 12 MM Adaptor Kit for Gunson Colortune

COLORTUNE SINGLE PLUG KIT 14MM (G4074) - Matthys

AB Tools-Laser Gunson Colortune Adapter Kit 14mm Taper Slim LSR9 : Automotive

Colortune / Compression Tester Thread Adapter Kit 14mm to 12mm with washer LSR8 - AB Tools Online

Gunson G4055C Colortune Adaptor Kit 14mm - Taper Slim

GUNSON G4074 COLORTUNE 14 mm Single Plug kit - KEEP-YOUR-CAR