The McCormick 6513049M91 is a genuine OEM belt tensioner designed for various McCormick tractor models, including the C, CX, MC, MTX, and XTX series. This critical component ensures proper tensioning of drive belts, preventing slippage and extending belt life, which is essential for the reliable operation of your agricultural machinery. Manufactured to McCormick's stringent quality standards, it guarantees precise fitment and durable performance in demanding conditions.