1/1NGK Spark plug Product DescriptionNGK spark plug. Replace it regularly for an easy start, less wear and longer engine life.Product InformationSpecificationsProduct dataSpark plug NGK BPMR7ASKU: 503 23 51‑11GTIN-12/UPC-A805544655989Article gross weight30 gFits To ModelChainsaws435440445450455465 Rancher365 X-Torq372 XP®565572 XP®390 XP®440 II e-series576 XP®572 XP® G390 XP® WGrass Trimmers223LBrushcutters223RBrush Saws555FXReviews