Auxiliary Belt Tensioner for dependable drive systems

Keep your van’s serpentine belt stable and quiet with this OEM‑quality belt tensioner. It holds the correct force on the accessory belt so the alternator, water pump, power steering, and A/C run smoothly every day .

Why it’s needed ✅

The belt stretches and flexes with heat and load. A proper tensioner compensates for that change, stopping slip, squeal, and rapid belt wear. It protects vital accessories and maintains steady charging and cooling.

How it works ⚙️

A preloaded spring pushes a forged arm that guides a low‑friction pulley against the belt. The sealed bearing and high‑temp grease keep rotation smooth, while the precise geometry maintains alignment and constant tension during idle, acceleration, and stop‑start traffic.

What happens if it fails ❗

Common signs include cold‑start chirp, belt glazing, battery light flicker, weak A/C, overheating, or heavy steering. If the pulley seizes or the spring weakens, the belt can jump or shred—leaving you with no charging and no coolant flow.

Tech notes ️

Direct fit. Use a wrench to relieve tension, swap the unit, torque to spec, and check belt routing. Always inspect the belt and idlers together for best results ️.

Compatibility

• Nv350 Urvan
• Nv350 Caravan