Briggs & Stratton 7100103SM IDLER, 3.25OD X.391ID NetSuite-ID_578615 9/16" center hole

9/16" center hole

maximum load 585 at 60 PSI

155" diameter trimmer line is an ideal fit for many string trimmer models

Fits X300 and X304 models for 42" deck

Briggs & Stratton 7100103SM IDLER, 3.25OD X.391ID NetSuite-ID_578615 9/16" center holeGenuine replacement part. This OEM part ensures proper fit and performance to maintain the life of your equipment. Many parts look similar, so its crucial to ensure youre choosing the right replacement for your original equipment or engine model. Not sure? Use our Parts Lookup Tool to view part diagrams and find the correct replacement. Help keep your outdoor power equipment running at peak performance by using Briggs and Stratton replacement and