Why is it important to replace the injection lines for cylinders #1 and #8?

The factory injection lines for cylinders #1 and #8 on Duramax LLY engines are known to be a common failure point. Replacing them with a well-built part helps prevent fuel delivery issues and ensures your engine runs reliably.

What material is this injection line made from?

This high-pressure injection line is constructed from stainless steel. This material is chosen for its strength and resistance to corrosion, contributing to a long service life.

Does this injection line come with any hardware or seals?

This product is the high-pressure injection line itself. It is designed as a direct replacement for the factory line, and you should reuse your existing hardware and seals during installation.

Fleece Performance

Specifications

Brand: Fleece Performance
Part #: FPE-FL-LLY-18
UPC: 670875719019

Fleece Performance

Fleece Performance 04.5-05 GM 2500/3500 Duramax LLY High Pressure Injection Line (No. 1 & 8)

Name: Fleece Performance 04.5-05 GM 2500/3500 Duramax LLY High Pressure Injection Line (No. 1 & 8)
Brand: Fleece Performance
Price: 76.15 USD
Availability: InStock

$76.15

Fits 2004-2005 Chevy Silverado 2500 HD. This high pressure injection line from Fleece Performance is for cylinders 1 & 8, replacing a common failure point.

Key Features

Fits 2004-2005 Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD.
Designed for cylinders #1 and #8 on Duramax LLY engines.
Constructed from durable stainless steel for long service life.
Direct replacement for the factory high-pressure injection line.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

Built with robust stainless steel, this high-pressure injection line from Fleece Performance is specifically made for the #1 and #8 cylinders on your 2004-2005 Duramax LLY engine. These specific cylinders are known failure points for the factory lines, so replacing them with a well-built part can help prevent fuel delivery issues and keep your truck running smoothly.

This line is designed to fit right into your existing fuel system, making it a straightforward replacement for the original part. By addressing the common weak spots on these LLY engines, you're ensuring reliable fuel delivery to the cylinders that need it most. It's a practical step to maintain the performance and dependability of your Duramax.