Includes (2) 870174001 Spark PlugsNew, Bulk PackedGenuine OEM Replacement Part # 870174001-2PKConsult owners manual for proper part number identification and proper installationPlease refer to list for compatibilityCompatible with the following: Ryobi: RY08510, RY08544, RY08548, RY08570, RY08574, RY08576, RY08578, RY09903, RY09973, CS30, CS30, RY30000B, SS30, SS30, RY30002B, BC30, BC30, RY30004B, RY30004D, RY30020, RY30020A, CS30, RY30023, SS30, RY30040A, RY30040B, SS30, SS30, RY30060A, RY30060B, BC30, RY30063, RY30120, RY30130, RY30140, BC30, RY30220, RY30220A, RY30220B, RY30240, RY30240B, RY30260, RY30260B, RY30524, RY30530, RY30544, RY30550, RY30564, RY30570, RY30931 30 cc, RY30951, RY30971, RY39500, RY52001, RY52001, RY52001A, RY52002, RY52002A, RY52003, RY52004, RY52004A, RY52014 TP30, RY52502, RY52504, RY52903, RY52905, RY60511A, RY60511B, RY60512, RY70101, RY70101A, RY70103, RY70103A, RY70105, RY70105A, RY70107, RY70107A, RY70111, RY70113, RY74003D14, RY30020B, RY26500, CS30, RY26901, RY26520, RY26921, RY26540, RY26941: RY08554, RY30060, RY09550, RY09551, RY28000, RY28020, RY28040, RY60514, RY26000, RY09050/Vac, Homelite: UT-08580, UT-08981, UT-08520, UT-08921, UT-08550, UT-08951, UT-08115: UT-20042, UT-20042-A, UT-20043-A, UT-20022, UT-20022-A, UT-20023-A, UT-20002-A, UT-20003-A, UT15198, C1200, UT-70026, D725CD, D725CD, UT-20749, UT-20758, UT-20769, UT-20769-A, UT-20785, UT-20777, UT-20778, HBC38, HBC40, UT-50500 Edger, UT-50901 Edger, UT-20002, UT08514, UT-08130 Eco Power, UT-60526 /, UT-08542, UT-08542-A, UT-08542-B, UT-21506, UT-10848, UT-20772, UT10517, UT10518, UT10520, UT20024Bs, UT20044Bs, UT40502, UT40903, UT-08131 Yard Sweeper Vac Eco Power, UT-20760, UT-20760-A