The BRIGGS & STRATTON 037X89MA Lawn Tractor 46" Primary Belt ensures steady power transfer from the engine to the mower deck for consistent cutting performance. Designed to fit securely within the drive system, this belt operates by gripping pulleys and maintaining proper tension, allowing the blades to engage smoothly and run at the correct speed. Its dependable construction reduces ... https://www.wholetoolbox.com/briggs-stratton-037x89ma-lawn-tractor-46-primary-belt