Lawn & Leaf Muffler. For Briggs & Stratton®, Tecumseh®, MTD® and other 3-4 HP Vertical Engine Mufflers with 1/2” Pipe Thread. Replaces Briggs & Stratton® OEM# 394569 / 298830 Arnold® OEM# M-107 Fits Most: Cub Cadet®, Bolens®, MTD®, Troy- Bilt®, Yard-Man®, Yard Machine®, and others. 3" W x 3" H x 2-3/8" D. Retail Blistered.