Hayden 5951 Accessory Drive Belt Idler Assembly

Overview of Hayden Idler Assembly 5951

The Hayden Idler Assembly 5951 is a steel accessory drive belt idler designed for select Ford and Mercury vehicles. Engineered to maintain proper tension on V-belts, this idler assembly supports reliable accessory drive system performance in models like the Ford Mustang and Mercury Marquis.

• Constructed from durable steel for long-lasting strength
• Compatible with V-belt systems featuring a 0.5 inch belt width
• Grey finish with a 3.95 inch overall length
• Single mounting hole with a 0.406 inch diameter for secure installation
• Outside diameter of 3.75 inches and inside diameter of 0.399 inches
• Designed with one groove and pulley width of 0.69 inches (17.5 mm)

Detailed Product Description

The Hayden Idler Assembly 5951 belongs to the Idler Assembly product line, which focuses on tensioners and pulleys essential for accessory drive belt systems. This part is specifically designed to fit Ford and Mercury vehicles including the Bobcat, Capri, Fairmont, LTD Crown Victoria, Marquis, Mustang, Pinto, and Zephyr models. Its steel construction ensures durability under continuous belt tension and heat exposure. The idler’s dimensions, such as a 3.95 inch length and 3.75 inch outside diameter, are optimized for V-belt systems with a 0.5 inch belt width, providing consistent belt alignment and tension.

Common Applications and Problem Solving

• Maintains proper tension on accessory drive V-belts to prevent slippage
• Reduces belt wear and extends belt life in Ford and Mercury vehicles
• Prevents noise caused by loose or misaligned belts
• Supports smooth operation of engine accessories like alternators and power steering pumps
• Replaces worn or damaged idler assemblies to restore accessory drive function

Installation Notes and Tips

• Ensure compatibility with your vehicle’s make and model before installation
• Inspect the belt and other pulleys for wear during replacement
• Use proper torque specifications for the single mounting hole (0.406 inch diameter)
• Verify belt alignment after installation to avoid premature wear
• Consult vehicle service manual for detailed installation procedures

Quality Assurance and Warranty

The Hayden Idler Assembly 5951 is manufactured to meet OEM standards for fit and function. Made from high-quality steel, it offers reliable performance in accessory drive belt systems. While specific warranty details are not provided, Hayden products typically adhere to industry quality controls to ensure durability and consistent operation in Ford and Mercury vehicles.