Drive Belt Tensioner for Nissan and Infiniti ⚙️

This OEM-grade serpentine belt tensioner keeps the accessory belt tight and quiet so your alternator, A/C compressor, water pump, and power steering run smoothly. It delivers steady pressure on the belt in all conditions, reducing slip, noise, and wear for reliable daily driving.

Why you need it

Belts stretch with heat, load, and age. The tensioner automatically corrects that, maintaining the right tension. This improves charging, cooling, and steering assist, and helps the belt last longer.

How it works

A preloaded spring inside the arm keeps constant force on a sealed bearing pulley. The pivot is damped to control belt flutter. As the belt moves, the arm self-adjusts, keeping tension stable without manual setting.

What happens if it’s bad ❗

Expect chirps or squeals, belt vibration, uneven pulley wear, battery light on, weak A/C, heavy steering, or engine overheating. A seized pulley or weak spring can shred or throw the belt, leaving you stranded. Replace at the first signs; inspect the belt and idlers, and torque bolts to spec.

Compatibility

• Q60/G Coupe
• Q70/M
• Q50
• Qx60/Jx
• Q40/G Sedan
• M
• Q70/M Hybrid
• Qx70/Fx
• Qx50/Ex
• Q60/G Convertible
• Q70(201802-)Lam
• G37 Sedan