Spark plug NGK BR6HS 3922 thread length 12,7mm Nickel SAE stala fits: COSSACK 350, 650; PIAGGIO/VESPA BRAVO, CIAO, PK, PX, PX LUSSO; YAMAHA DT 50-650. Spark Plug Unscrewable SAE connector. Spark Position [mm] 1.0.
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