This part is commonly Used on models:
51974 18in Straight-Shaft Gas Trimmer
51975 18in Straight-Shaft Gas Trimmer
51976 18in Straight-Shaft Gas Trimmer
51977 18in Straight-Shaft Gas Trimmer
51978 18in Straight-Shaft Gas Trimmer
51998 18in Straight-Shaft Gas Trimmer
51978A 18in Straight-Shaft Gas Trimmer
