HomeBelts and Cooling > Accessory Drive Belt System ComponentsNSK 84SPF0103+S08 Accessory Drive Belt Idler Pulley
Part #: 84SPF0103+S08

NSK 84SPF0103+S08 Accessory Drive Belt Idler Pulley

⚙️ 22 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: INFINITI and Nissan, 350Z, FX35, G35, M35, Pathfinder, and QX4
🔄Easy Returns — Return within 60 days for a full refund
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Overview of NSK Accessory Drive Belt Idler Pulley

The NSK 84SPF0103+S08 accessory drive belt idler pulley is engineered for reliable performance in select Infiniti and Nissan vehicles. Designed with precise dimensions, this component ensures proper belt tension and smooth operation in your vehicle's accessory drive system.

  • Inside diameter: 12 mm for accurate shaft fitment
  • Outside diameter: 84 mm to maintain belt alignment
  • Width of outer race: 22.7 mm for durability and stability
  • Compatible with Infiniti 350Z, FX35, G35, M35 and Nissan Pathfinder, QX4 models
  • Part number 84SPF0103+S08 for exact replacement

Detailed Product Description

This NSK accessory drive belt idler pulley features a 12 mm inside diameter, allowing it to fit securely on the pulley shaft. The 84 mm outside diameter is designed to maintain proper belt tracking and tension, reducing wear on the belt and other components. The 22.7 mm width of the outer race contributes to the pulley’s structural integrity, ensuring consistent performance under various driving conditions. This part is specifically manufactured to meet the specifications required by Infiniti and Nissan vehicles, including the 350Z, FX35, G35, M35, Pathfinder, and QX4 models. Using the correct idler pulley like the NSK 84SPF0103+S08 helps maintain the accessory drive belt system’s efficiency and longevity.

Common Applications and Problem Solving

  • Prevents belt slippage and misalignment in Infiniti 350Z and Nissan Pathfinder
  • Reduces noise caused by worn or damaged idler pulleys in FX35 and G35 models
  • Maintains proper tension to avoid premature belt wear in M35 and QX4 vehicles
  • Supports smooth operation of alternator, power steering, and AC compressor belts
  • Replaces faulty or worn pulleys to restore accessory drive system function

Installation Notes and Tips

When installing the NSK 84SPF0103+S08 idler pulley, ensure the pulley shaft and mounting surfaces are clean and free of debris. Verify the inside diameter of 12 mm matches the shaft size on your vehicle. Proper torque specifications should be followed to avoid over-tightening or loosening during operation. Inspect the accessory drive belt for wear and replace if necessary to ensure optimal system performance.

Quality Assurance and Warranty

NSK manufactures this accessory drive belt idler pulley to meet OEM standards for fit, form, and function. While specific warranty details are not provided, NSK products typically undergo rigorous quality control to ensure durability and reliability in automotive applications. Using the NSK 84SPF0103+S08 helps maintain the integrity of your Infiniti or Nissan accessory drive system.

BrandNSK
Part Number84SPF0103+S08
Inside Diameter12
Outside Diameter84
Width, Outer Race22.7

This part fits 22 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2008INFINITIFX353.5LV6N/AFor Compressor Belt
2008INFINITIM353.5LV6N/AFor Compressor Belt
2007INFINITIFX353.5LV6N/AFor Compressor Belt
2007INFINITIG353.5LV6N/AFor Compressor Belt
2007INFINITIM353.5LV6N/AFor Compressor Belt
2006INFINITIFX353.5LV6N/AFor Compressor Belt
2006INFINITIG353.5LV6N/AFor Compressor Belt
2006INFINITIM353.5LV6N/AFor Compressor Belt
2005INFINITIFX353.5LV6N/AFor Compressor Belt
2005INFINITIG353.5LV6N/AFor Compressor Belt
2005Nissan350Z3.5LV6N/AFor Compressor Belt
2004INFINITIFX353.5LV6N/AFor Compressor Belt
2004INFINITIG353.5LV6N/AFor Compressor Belt
2004Nissan350Z3.5LV6N/AFor Compressor Belt
2003INFINITIFX353.5LV6N/AFor Compressor Belt
2003INFINITIG353.5LV6N/AFor Compressor Belt
2003INFINITIQX43.5LV6N/AFor Compressor Belt
2003Nissan350Z3.5LV6N/AFor Compressor Belt
2002INFINITIQX43.5LV6N/AFor Compressor Belt
2002NissanPathfinder3.5LV6N/AFor Compressor Belt
2001INFINITIQX43.5LV6N/AFor Compressor Belt
2001NissanPathfinder3.5LV6N/AFor Compressor Belt

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.