The MTD 756-04196A Lawn Mower Engine Pulley helps transfer engine power through the belt system for smooth and consistent equipment operation. This metal double V-type pulley connects to the engine and rotates the drive belt, supporting efficient power transmission. Its 3.39-inch diameter design provides proper belt engagement and movement. Replacing a worn, damaged, or slipping pulle... https://www.wholetoolbox.com/mtd-756-04196a-lawn-mower-engine-pulley-3-39-dia/756-04196A.html