LLY Duramax Fan Clutch 2004.5-2005

Overview

This is an engine cooling fan clutch 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

The fan clutch decides how hard the engine fan pulls air through the radiator, charge-air cooler and condenser. A diesel makes far more heat under load than a gas engine, and towing or grades are exactly when a tired clutch gives up: the viscous fluid leaks down or the bearing wears, the fan freewheels, and coolant and intake temperatures climb the moment road speed drops. The opposite failure is a clutch locked permanently engaged, which roars constantly, robs power and hurts fuel economy. A correct replacement restores full commanded airflow at temperature and lets the fan disengage again when it should.

What's Included

• a fan clutch matched to the engine as specified
• mounting hardware where the assembly includes it

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:

• overheating while towing, climbing a grade or idling in traffic
• high coolant or intake-air temperatures at low road speed
• a fan that roars constantly or never engages
• a leaking, seized or freewheeling fan clutch

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.