The Belt Tensioner Assembly 3719579 is a crucial component for maintaining the proper tension of the serpentine belt in your truck’s engine system. It ensures that the belt, which powers multiple accessories such as the alternator, air conditioning compressor, and power steering pump, remains tight and performs optimally. This assembly is designed to prevent belt slippage, reducing wear and tear on the belt and improving the overall efficiency and longevity of the engine’s auxiliary systems.

Key Features:

• Precision Tension Control: This assembly uses a spring-loaded tensioner to maintain the appropriate tension on the serpentine belt, preventing slipping or stretching.
• Durable Construction: Made from high-quality, wear-resistant materials to handle the heavy-duty demands of truck engines.
• Corrosion-Resistant: Built to resist rust and corrosion, ensuring durability even under tough working conditions.
• Efficient Operation: Keeps the serpentine belt under constant tension for smooth operation of engine accessories, contributing to optimal engine performance.
• Easy Installation: Designed for a straightforward, hassle-free installation process, saving time during repairs or replacements.

Applicable Models:

• FM Series (2010-2020)
• FH Series (2010-2020)
• FL Series (2010-2020)
• FE Series (2010-2020)

Installation Location:
The Belt Tensioner Assembly is typically located at the front of the engine, near the serpentine belt. It is mounted to the engine block and connected to the belt, where it maintains the appropriate tension to ensure smooth operation of various engine-driven components.