Low Pressure Fuel Line Kit 12625281 97321375 for LBZ LMM Duramax GM 2500 3500HD 2006-2010 6.6L

Low Pressure Fuel Line Kit 12625281 97321375 for LBZ LMM Duramax GM 2500 3500HD 2006-2010 6.6L

This fuel line is engineered as a direct replacement for the LBZ LMM Duramax GM 2500 3500HD 2006-2010 6.6L. Manufactured to meet or exceed OEM specifications, it delivers reliable performance in demanding conditions. Each unit is tested for fuel flow, pressure rating, and durability before leaving the factory to ensure consistent quality across every order.

Vehicle Compatibility

Replaces OEM Part Numbers

12625281 • 12625284 • 97321375 • 12625278 • 12625277 • 94013125 • 2006-2010 • 2006-2007

Signs You Need a Replacement

If your equipment is showing any of these symptoms, the fuel line may be the cause:

• Fuel smell or visible wet spots — A cracked or perished fuel line seeps fuel. Diesel fuel lines harden with age and develop hairline cracks near connection points.
• Air in the fuel system — Air enters through deteriorated hoses, causing hard starting and rough running. Check all connections and replace any line that feels spongy.
• Collapsed line under suction — A reinforced fuel line can collapse internally, restricting flow. The engine runs fine at idle but starves under load.
• Fuel leaking at connection points — Old clamps lose tension and the hose shrinks over time. Always use new clamps when installing fuel lines.

Installation Tips

When installing new fuel lines, cut the ends square with a sharp blade — angled cuts cause leaks at the connection points. Use new clamps at every connection; old clamps have lost their spring tension. After installation, pressurize the system with the primer pump and check every fitting for dampness. Run the engine and recheck after 10 minutes of operation, as fittings can loosen slightly under vibration.

Frequently Asked Questions

Can I cross-reference 12625281 with 12625284?
Yes. Both 12625281 and 12625284 are interchangeable OEM numbers for this part. They refer to the same component with the same specifications, just different part number revisions.

I have a 6.6L engine – which version do I need?
This part covers 6.6L applications. To narrow down the exact fit, check your vehicle’s model year and engine code. The same displacement can have multiple engine variants with different fuel systems or emissions equipment.

My vehicle is a 2006 model – is it covered?
The compatibility range for this part includes 2006-2010. The 2006 model year falls within this range, but verify the engine code and body type match. Mid-year production changes sometimes mean two vehicles from the same model year use different parts.

What material are these fuel lines made from?
This fuel line kit uses materials rated for the specific fuel type and pressure of your application. Diesel lines need to handle higher pressure than gasoline lines. Always install the correct fuel-rated line and use new clamps at every connection point.

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