Four Seasons 45004 Accessory Drive Belt Tensioner Pulley - Air Conditioning or Air Conditioning Bracket

Reliable Accessory Drive Belt Tensioner Pulley for Nissan and Infiniti

The Four Seasons Pulley 45004 is a durable accessory drive belt tensioner pulley designed for select Nissan and Infiniti models. Engineered with precision, this steel pulley ensures smooth operation of the serpentine belt system, maintaining optimal belt tension and performance.

• Constructed from high-quality steel for strength and longevity
• Black finish for corrosion resistance and durability
• Compatible with serpentine belt systems featuring a 1.000 inch (25.4 mm) belt width
• Outside diameter measures 3.250 inches (82.55 mm) with a smooth groove design
• Inside diameter of 0.46875 inches (11.906 mm) for precise fitment
• Single mount hole design for secure installation
• Meets or exceeds OEM specifications for reliable performance

Four Seasons Pulley Product Line Overview

The Four Seasons Pulley line focuses on delivering dependable pulley components tailored for accessory drive belt systems. This product line emphasizes quality materials and exact fitment to ensure compatibility with original equipment. The 45004 pulley is part of this line, offering a steel idler/tensioner pulley solution that supports proper belt tension and reduces wear on belt-driven accessories.

Detailed Product Description

The Four Seasons Pulley 45004 is an idler/tensioner pulley designed specifically for serpentine belt systems in vehicles such as the Nissan 200SX, Altima, I30, I35, and Murano, as well as compatible Infiniti models. Its steel construction provides durability under continuous engine operation, while the black coating helps resist corrosion. The smooth groove design accommodates a 1-inch wide serpentine belt, ensuring consistent belt tracking and tension. With an outside diameter of 3.25 inches and a width of 23.9 mm, this pulley fits precisely within the accessory drive system. The single mounting hole allows for straightforward installation, although mounting hardware is not included.

Common Applications and Issues Addressed

• Restores proper tension to serpentine belts in Nissan and Infiniti vehicles
• Replaces worn or damaged idler/tensioner pulleys causing belt noise or slippage
• Prevents premature belt wear due to misalignment or pulley failure
• Eliminates squealing or chirping noises from the accessory drive system
• Supports smooth operation of alternator, power steering, and A/C compressor belts

Installation Notes and Tips

• Verify compatibility with your specific Nissan or Infiniti model before installation
• Ensure the serpentine belt width matches the 1.000 inch specification
• Inspect the belt and other pulleys for wear during replacement
• Use appropriate tools to avoid damaging the pulley or mounting components
• Note that mounting hardware is not included and may need to be sourced separately

Quality Assurance and Warranty

The Four Seasons Pulley 45004 meets or exceeds OEM standards, providing reliable performance and durability. Manufactured with stringent quality controls, this pulley is designed to maintain proper belt tension and extend the life of your accessory drive system. Warranty details should be confirmed with the product documentation or manufacturer.