General description This is a high-quality aftermarket replacement ignition coil designed for various Ryobi and Homelite equipment models. It is compatible with multiple part numbers including 850108031, 850108001, and 850108002. Please ensure to verify the model and part numbers before making a purchase to guarantee compatibility. Technical specifications Part Numbers: 850108031, 850108001, 850108002 Compatible Models: Homelite ut-08520, ut-08550, ut-08580, ut-08921, ut-08951, ut-08981, ut-21004, ut-21044, ut-21506, ut-21566, ut-21907, ut-21947, ut-29005, ut-29045, ut-40502, ut-40903; Ryobi ry39500, ry26000, ry26500, ry26520, ry26540, ry26901, ry26921, ry26941, ry28000, ry28040 Other information Package Contents: 1 x Ignition Coil Note: Many spare parts may appear similar but do not fit all models. Always check the original reference before ordering.