NGK BPMR8Y Spark Plug

Bosch: WSR4F. Champion: RCJ4Y, RCJ6Y. Husqvarna: HQT-2, 584 96 81-01.

Fits Echo models CS280, CS281, CS300, CS301, CS305, CS310ES, CS320T, CS320TES, CS330, CS340, CS345, CS352ES, CS360, CS360T, CS360TES, CS361, CS370ES, CS420ES, CS440, CS450, CS500ES, CS501SX, CS501SXH, CS510, CS520, CS550, CS590, CS600, CS610, CS620SX, CS6701, ES250ES, ES255ES, GT225, GT230, GT220ES, GT222ES, HC150, HC155, HC160, HC165, HC180, HC185, HC200, HC230, HC231, HC235, HC245E, HC155ES, HC331ES, HC341ES, HCA260, HCA265, HCAS236E, HCR150S, HCR161, HCR165, HCR171, HCR185, PAS265, PB250, PB251, PB265, PB500, PB580, PB650, PB655, PB755, PB770, PPT235ES, PPT236ES, PPT265, PPT300ES, SHC210, SHC225, SHC260, SHR170SI, SRM225, SRM230, SRM255, SRM260, SRM260S, SRM260SB, SRM266S, SRM266T, SRM280, SRM280S, SRM280T, SRM310S, SRM310U, SRM340, SRM222, SRM236, SRM265, SRM300, SRM420, SRM520.