Dayco 89384 Automatic Serpentine Belt Tensioner Assembly

The Dayco 89384 Automatic Belt Tensioner Assembly is engineered to maintain constant tension on serpentine belt drives, ensuring optimal performance and longevity of your vehicle's accessory systems. This precision-designed tensioner helps prevent belt slippage, reduces noise, and protects accessory bearings from premature wear.

Key Features:

• Patented Flat Spring Design: Provides minimal operating range variations in tension, reducing the risk of belt squeal, slippage, and poor accessory performance
• Teflon-Wound Spring: Teflon strip integrated within the spring resists abrasion and extends service life
• Heavy-Duty Cast Aluminum Arm: Offers superior strength and reduced distortion under operating conditions
• Corrosion-Resistant Construction: Aluminum retainer ring locks the spring case and arm together while sealing against corrosion
• Contamination Protection: Thermoplastic rubber spring slot plug and rubber O-ring seal keep out dust, grime, and harmful contaminants
• Quiet Operation: Lubricated nylon pivot tube bushing and spring bushing promote reduced noise and smooth performance
• Zinc-Coated Mounting Bolt: Rust-resistant and concentric design ensures even degree of constant tension

This OE replacement tensioner is designed for truck applications and comes backed by Dayco's limited warranty. Each unit is sold individually and designed to meet or exceed original equipment specifications for reliable, long-lasting performance.