Western Star 4900EX Drive Belt Idler Assemblies

Your Western Star 4900EX will be happy to know that the search for the right Drive Belt Idler Assemblies you’ve been looking for is over! Advance Auto Parts has 4 different Drive Belt Idler Assemblies for your vehicle, ready for shipping or in-store pick up. The best part is, our Western Star 4900EX Drive Belt Idler Assemblies start from as little as $25.99.

When it comes to your Western Star 4900EX, you want parts and products from only trusted brands. Here at Advance Auto Parts, we work with only top reliable Drive Belt Idler Assemblies brands so you can shop with complete confidence. Some of our top Drive Belt Idler Assemblies brands are Dayco. We’re sure you will get the right product to keep that 4900EX running for a long time.

We even have reviews of our OEM and aftermarket Drive Belt Idler Assemblies products to help you buy with confidence. Hear from other customers via the 75 reviews on parts for your Western Star 4900EX.

Shop online, find the best price on the right product, and have it shipped right to your door. If you prefer to shop in person for the right Drive Belt Idler Assemblies for your 4900EX, visit one of our local Advance Auto Parts locations and you’ll be back on the road in no time!

Compare 4 Western Star Drive Belt Idler Assemblies

Dayco – Serpentine Idler/Tensioner Pulley; Direct Fit, 76 mm Diameter, 37 mm Smooth (Part No.89016)

Serpentine Idler/Tensioner Pulley; Direct Fit, 76 mm Diameter, 37 mm Smooth

from

$25.99
Dayco idler/tensioner pulleys are built with smoother surfaces and tighter dimensional tolerances, which translates to less vibration and longer belt life. In addition to stamped, forged steel and powdered metal pulleys, Dayco also designs ultra-strong pl

Product Features:
  • Designed for the majority of automotive vehicle applications on the road today
  • High-quality materials help resist wear and improve belt life
  • Features premium lubricated bearings to extend service life
  • Meets or exceeds OE quality
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Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Steel, 86.5mm Dia., 39.4mm Width, Smooth (Part No.89106)

Serpentine Idler/Tensioner Pulley; Steel, 86.5mm Dia., 39.4mm Width, Smooth

from

$57.99
Designed to replace idler and tensioner pulleys for serpentine drives in heavy-duty diesel engine applications, Dayco HD idler/tensioner pulleys are machined from high-strength steel or powdered metal material to provide excellent wear resistance under ha

Product Features:
  • Engineered for the demanding drive systems of today’s class 4-8 heavy-duty commercial trucks
  • Premium OE technology to ensure peak performance under extreme conditions
  • Utilizes 3D dimensional computer aided design (CAD) and finite element analysis (FEA) for optimal design and maximum structural integrity
  • Meets or exceeds OE quality
See More

Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 54.5mm Width, 12 Grooves (Part No.89113)

Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 54.5mm Width, 12 Grooves

from

$66.99
Designed to replace idler and tensioner pulleys for serpentine drives in heavy-duty diesel engine applications, Dayco HD idler/tensioner pulleys are machined from high-strength steel or powdered metal material to provide excellent wear resistance under ha

Product Features:
  • Engineered for the demanding drive systems of today’s class 4-8 heavy-duty commercial trucks
  • Premium OE technology to ensure peak performance under extreme conditions
  • Utilizes 3D dimensional computer aided design (CAD) and finite element analysis (FEA) for optimal design and maximum structural integrity
  • Meets or exceeds OE quality
See More

Dayco No Slack Gold Label – Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 57mm Width, Smooth (Part No.89110)

Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 57mm Width, Smooth

from

$79.99
Designed to replace idler and tensioner pulleys for serpentine drives in heavy-duty diesel engine applications, Dayco HD idler/tensioner pulleys are machined from high-strength steel or powdered metal material to provide excellent wear resistance under ha

Product Features:
  • Engineered for the demanding drive systems of today’s class 4-8 heavy-duty commercial trucks
  • Premium OE technology to ensure peak performance under extreme conditions
  • Utilizes 3D dimensional computer aided design (CAD) and finite element analysis (FEA) for optimal design and maximum structural integrity
  • Meets or exceeds OE quality
See More

FAQs for Western Star 4900EX Drive Belt Idler Assemblies

What are the most popular Drive Belt Idler Assemblies for the Western Star 4900EX?

With 1 brands you can trust, our most popular Drive Belt Idler Assemblies for the Western Star 4900EX are:
Serpentine Idler/Tensioner Pulley; Steel, 86.5mm Dia., 39.4mm Width, Smooth
from $57.99
This product is not rated
Serpentine Idler/Tensioner Pulley; Steel, 86.5mm Dia., 39.4mm Width, Smooth
Drive Belt Idler Assemblies
Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 54.5mm Width, 12 Grooves
from $66.99
This product is not rated
Serpentine Idler/Tensioner Pulley; Steel, 74mm Dia., 54.5mm Width, 12 Grooves
Drive Belt Idler Assemblies