Amazon
Outer thread [mm]: 14,0 Spanner Size: 20,8 mm Spark Plug: 1 - Earthed Electrode; Fixed SAE connector; Nickel Middle Electrode; no interference suppression; with gasket seat Spark Position [mm]: 0 Thread Length [mm]: 19
AUTODOC
4076; Spark plug; NGK; M14 x 1,25 20,8 mm; R6254K105