GM 12654066 Duramax Fuel Injection Supply Line

( Brand: Gm ), ( Manufacturer Part Number: 12654066 ), ( Type: Line ), ( Manufacturer Warranty: No Warranty )

Review GM Duramax Fuel Injection Supply Feed Line fits SILVERADO SIERRA LML 2011–2016

The GM 12654066 11-16 Silverado Sierra LML Duramax Fuel Injection Supply Line is an essential component of the fuel delivery system in certain models of the Chevrolet Silverado and GMC Sierra trucks. This fuel line is specifically designed for use with the LML Duramax 6.6L V8 Turbo Diesel engine, which was produced between the model years 2011 and 2016.

This fuel injection supply line is engineered to meet the demanding requirements of heavy-duty use. It is made from high-quality materials, including reinforced rubber and durable metal fittings, to ensure reliable performance and longevity. The rubber material used in this fuel line is specifically designed to resist swelling, cracking, and other forms of degradation that can occur over time due to exposure to fuel and extreme temperatures.

The GM 12654066 fuel injection supply line is designed to fit seamlessly into the existing fuel delivery system of your Silverado or Sierra truck. It features OEM-style connections that provide a secure and leak-free fit, ensuring optimal fuel pressure and delivery to the engine.

This fuel line is also designed to meet or exceed the strict emissions and fuel efficiency standards set by the Environmental Protection Agency (EPA) and the California Air Resources Board (CARB). This means that by using this genuine GM replacement part, you can help ensure that your truck continues to meet regulatory requirements, while also maintaining optimal performance and fuel efficiency.

Installing the GM 12654066 11-16 Silverado Sierra LML Duramax Fuel Injection Supply Line is a relatively straightforward process that can be completed by a skilled DIY mechanic or a certified automotive technician. The part comes with clear and easy-to-follow installation instructions, which outline the steps required to remove the old fuel line and install the new one. The process typically involves disconnecting the fuel lines at the fuel rail and the engine, removing the old fuel line, and installing the new one in its place.

In conclusion, the GM 12654066 11-16 Silverado Sierra LML Duramax Fuel Injection Supply Line is a high-quality and essential replacement part for certain models of the Chevrolet Silverado and GMC Sierra trucks. It is designed to meet the demands of heavy-duty use, while also meeting strict emissions and fuel efficiency standards. With its durable construction, secure connections, and easy installation process, this fuel line is an excellent choice for anyone looking to maintain the optimal performance and longevity of their truck's fuel delivery system.

Pros and Cons of Buying a GM 12654066 11-16 Silverado/Sierra LML Duramax Fuel Injection Supply Line

The GM 12654066 fuel injection supply line is a crucial component in the Duramax engine found in certain Silverado and Sierra models from 2011 to 2016. Replacing this part can help maintain optimal engine performance. Here are some pros and cons to consider before making a purchase.

1. Improved Fuel Efficiency: A worn-out or damaged fuel injection supply line can lead to inefficient fuel delivery, causing increased fuel consumption. Replacing the faulty part with a new one ensures that fuel is delivered precisely and efficiently to the engine, potentially reducing fuel costs over time.

2. Enhanced Engine Performance: A new fuel injection supply line can help improve engine performance by ensuring a consistent fuel supply to the injectors. This results in smoother idling, better acceleration, and improved overall power delivery.

3. Preventing Potential Catastrophic Engine Damage: A damaged fuel injection supply line can lead to fuel leaks, which could potentially cause a fire or other catastrophic engine damage if left unaddressed. Replacing the part as soon as it shows signs of wear or damage can help prevent such issues.

4. Longer Lifespan: Using an OEM (Original Equipment Manufacturer) part like the GM 12654066 ensures that the fuel injection supply line will meet the specifications and durability requirements of the engine, potentially reducing the need for frequent replacements.

1. Cost: Replacing the fuel injection supply line with an OEM part like the GM 12654066 can be a significant investment, especially for those on a tight budget. The cost may be a deterrent for some, particularly if they are considering aftermarket alternatives.

2. Installation Complexity: Installing the new fuel injection supply line may require specialized tools and mechanical knowledge. This could result in additional labor costs if professional assistance is required.

3. Availability: Depending on the location and availability of the part, it may take some time to source and receive the GM 12654066 fuel injection supply line.

The decision to purchase the GM 12654066 11-16 Silverado/Sierra LML Duramax Fuel Injection Supply Line depends on several factors, including the current condition of the part, budget, and personal preferences. While there are costs and complexities associated with this purchase, the potential benefits include improved fuel efficiency, enhanced engine performance, and preventing potential engine damage. Ultimately, those who prioritize engine reliability and efficiency may find the investment worthwhile.

For those in need of a fuel injection supply line for their Silverado or Sierra Duramax engine, it's recommended to consider the following factors before making a purchase:

1. Engine Performance: Evaluate the current state of the engine and consider how a new fuel injection supply line may impact performance.

2. Budget: Determine the available budget for the purchase and weigh the costs against the potential benefits.

3. Availability: Check the availability of the part from reliable sources and plan accordingly for any potential delays.

4. Installation: Consider whether professional installation is necessary and factor in the associated labor costs.

5. Aftermarket Alternatives: Explore aftermarket alternatives if cost is a concern, but keep in mind that OEM parts may offer superior durability and performance.

Details:

2011-2016 Silverado Sierra LML DURAMAX FUEL Injection Pump Feed LINE 12654066In working order. Removed from a 2014 with 95000 miles on it.

part #: 12654066 prices

• $128.12-$129.17

specifications airintakesystemse:

• for models: Lml, Silverado, Sierra
• for years: 2011-2016
• brand: Gm
• mpn: 12654066
• type: Line
• manufacturer warranty: No Warranty

returns airintakesystemse:

• policy: No Returns

payments airintakesystemse:

• wallet: Apple-pay
• other
• credit card: Diners-club

general airintakesystemse:

• condition: Used
• Car Truck Parts Accessories > Air Fuel Delivery > Hoses, Lines Pipes

offer airintakesystemse:

• sold: 0
• best offers: True
• availability: In Stock
• started: November 15, 2025
• options: Ship-to-home
• quantity: 1

seller airintakesystemse:

• # reviews: 706
• rating: 99.4%
• city: Gaines, Michigan

shipping airintakesystemse:

• transit: 4-9 Days
• class: Economy
• service: Economy
• cost: $0.00
• type: Fixed

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