Overview Product Description ATTENTION! JLG parts have moved!JLG parts have moved to our all-new parts portal, Modern Equipment Parts, featuring manuals, how-to videos and maintenance tips, and more!Click here to view this part ("372451B1: JLG FIRST EXT BOOM"). Product Videos Custom Field Product Reviews Write a Review Write a Review × JLG 372451B1: JLG OEM FIRST EXT BOOM Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *