Fan Belt Set AVX13x1520 for MF 399 with Phaser Engine – Matched Pair

Description

When you’re dealing with a Massey Ferguson 399 Phaser, you’ve got more than just a regular tractor under the hood. That Phaser engine uses variable valve timing and advanced fuel management – technology that demands everything work exactly right, including the fan belt system. If one belt starts slipping or stretching, it throws off the whole cooling and electrical system, and that’s when your sophisticated diesel starts acting up.

What You’re Getting

• Matched pair of AVX13x1520 belts engineered to share loads equally
• Heavy-duty construction that handles the extra heat from Phaser’s efficient combustion
• Precise 1520mm length designed for the unique pulley setup on Phaser engines
• Quality materials that won’t interfere with sensitive timing sensors

Built for Real Farm Work

Your MF 399 Phaser isn’t your grandfather’s tractor – it’s a high-tech machine that can handle anything from heavy tillage to demanding PTO work. The Phaser engine was Massey’s answer to stricter emissions and fuel economy demands, using computer-controlled timing that makes more power while burning less fuel. These dual belts keep the cooling fan spinning and the alternator charging without creating the vibrations that could confuse those precision sensors.

Made to Last

These AVX13x1520 belts are built specifically for the demands of Phaser engines. The wrapped construction stands up to the higher belt tensions these engines require, while the compound is formulated to handle the additional heat that comes with improved combustion efficiency. Since they’re manufactured as a matched set, both belts will stretch and wear at the same rate, maintaining the balance that keeps your Phaser running smooth.

Good to Know

Always replace both belts at the same time on Phaser engines – mixing old and new creates imbalanced loads that the engine management system doesn’t like. Make sure you follow the specific belt routing for Phaser models, as it’s different from standard 399s. Keep factory tension specs handy, because these engines are sensitive to both loose and over-tight belts. If your tractor has diagnostic capabilities, clear any belt-related codes after installation.