LLY Duramax Idler Pulley 2004.5-2005 - Dorman

Overview

This is a belt idler pulley for the Chevrolet, GMC LLY Duramax diesel (2004.5-2005). Built to OEM specification and engineered as a direct-fit replacement for a professional-grade LLY Duramax repair or service. Every order ships fast and is backed by our support team.

What It Does & How It Helps

An idler pulley guides the serpentine belt around the front of the engine and keeps its wrap on the accessories. The pulley spins on a sealed bearing, and when that bearing dries out it starts to growl, wobble and heat up. A failing idler can shred the belt, so it is best replaced as soon as it gets noisy or shows play.

What's Included

• an idler pulley as specified
• mounting hardware or dust cap where included

Fitment

Fits Chevrolet, GMC trucks equipped with the LLY Duramax diesel engine, 2004.5-2005. Please confirm your engine and year before ordering to ensure correct fitment.

Common Symptoms & When to Use

Consider this LLY Duramax part when you experience:

• a growl or rattle from the belt area
• a pulley that wobbles or has play
• belt noise or uneven belt wear
• a rough or tight pulley when spun by hand

Specifications

• Engine: LLY Duramax
• Year Range: 2004.5-2005

Quality & Service

Fast shipping on in-stock orders. Free shipping on orders over $70. Backed by Core Diesel Parts — your source for LLY Duramax diesel parts.