Rubber Fuel Hose Kit, LML Duramax | 2012-2016

The Merchant Automotive Rubber Fuel Hose Kit is a complete replacement set of the rubber low-pressure fuel hoses on 2012-2016 Chevy Silverado and GMC Sierra 2500HD and 3500HD pickups with the LML 6.6L Duramax diesel. It includes all of the rubber fuel lines on the engine, so you can replace every dry or cracking hose in one job.

2012-2016 only. This kit does not fit 2011 trucks. For a 2011 LML, use our 2011 LML Fuel Hose Kit.

Features

• Complete set of seven rubber fuel hoses and lines
• Molded hoses built for diesel fuel
• Molded to the factory shape for a direct fit
• Covers the CP4 pump feed and return, fuel filter, and fuel pressure regulator vacuum lines
• Clamps are not included. Reuse your factory clamps or install new ones.

What's Included

• (1) Fuel feed hose, right hand pump inlet, replaces GM 12636270
• (1) Fuel pressure regulator vacuum hose
• (1) Fuel pressure regulator vacuum tube
• (1) Fuel return hose, GM 12645582
• (1) Fuel return hose on back of pump, LH side
• (1) Fuel filter inlet hose
• (1) Fuel filter outlet hose

Why Replace Them

Factory rubber fuel hoses dry out, harden and crack with age and engine heat. A failing hose can leak fuel, leave a diesel smell under the hood, or let air into the fuel system, which can cause hard starts, rough running or loss of power. When one hose fails, the others are usually close behind, so replacing the full set during a repair saves you from chasing leaks one hose at a time.

Installation Tips

• Disconnect the batteries before removing any fuel hoses.
• Replace one hose at a time to keep the routing correct.
• Inspect the clamps and replace any that are rusted or weak.
• Prime the fuel system after installation and check every connection for leaks.

Frequently Asked Questions

Does this fit my 2011 LML?
No. 2011 trucks use different hoses. Use our 2011 LML Fuel Hose Kit.

Are clamps included?
No. Reuse your factory clamps if they are in good condition, or install new ones.

Can I buy the hoses individually?
Yes. Every hose in this kit is also sold separately. Use the links in the What's Included list.

Do I need to prime the fuel system after installing?
Yes. Prime the system after replacing the hoses to remove any air before starting the engine.

For warranty information or to submit a claim, see our Warranty Form.