Fuel injection line

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Find replacement fuel injection lines for diesel engines at Fab Heavy Parts. This collection includes fuel injector line sets and selected injection line replacements for engines used in excavators, construction machinery, commercial trucks, and other diesel-powered equipment. Browse listed applications for Komatsu, Mitsubishi, Yanmar, Caterpillar, Deutz, Cummins, Volvo Penta, and Doosan.

Diesel Fuel Injection Lines for Different Engine Applications

Fuel injection lines carry fuel between components of a diesel engine's injection system. On systems that use separate high-pressure injector pipes, the lines must match the engine's fuel injection arrangement and the connections of the original components.

Our fuel injection line collection includes replacement fuel injection line products listed for applications such as:

  • Komatsu: 6D108, 6D114, 6D125, and SAA6D125E engines, including selected PC-series excavators.

  • Mitsubishi: 6D16, 6D22, 6D24, and 6D31 engines.

  • Yanmar: 4TNV94 and 4TNV98 engines.

  • Caterpillar: 3306 and 3306C engines.

  • Deutz: D2.9, TD2.9, and TCD2.9 engines.

  • Cummins: Selected 5.9L diesel applications in Dodge Ram trucks.

  • Volvo Penta: Selected D2-series marine diesel engine applications.

These are product-listed applications. Confirm the specific replacement line's compatibility before ordering.

Fuel Injector Line Sets and Replacement Options

Many products in this collection are supplied as fuel injection line sets, while some listings describe individual injection lines or application-specific replacements. The number of lines, pipe routing, connection types, and included components may differ between products.

If you are replacing damaged or leaking injection pipes, check whether the selected fuel injection line listing includes the complete set you need or only the specified components.

You can also explore our related fuel injectors and fuel injection pumps when reviewing other components of the fuel injection system.

How to Choose the Right Fuel Injection Line

Before purchasing, identify the engine manufacturer, exact engine model, and original injection line part number whenever available. Compare the replacement fuel injection line listing with the original line configuration, including pipe shape, connection points, and the number of lines required.

Do not assume that injection lines for similar engine models or excavator series are interchangeable. If the original part number is unavailable, collect your engine identification information and clear photos of the existing lines for further compatibility review.

Diesel injection systems can operate at hazardous pressures. Installation, inspection, and testing should follow the applicable engine manufacturer's service procedures.

Need Help Finding the Right Fuel injection line?

Can't find the replacement part you need? Send FAB Heavy Parts your part number, engine model, or equipment details. Our team can help review your requirements and provide a quotation.

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Frequently Asked Questions

How do I know which fuel injection line fits my diesel engine?

Start by checking your engine manufacturer, exact engine model, and the part number on your original fuel injection line, if available. Compare these details with the replacement fuel injection line listing. You should also verify the pipe routing, connection configuration, and the number of lines required. Similar engine models may use different injection line arrangements.

Are your fuel injection lines sold individually or as complete sets?

Our collection includes fuel injection line sets and selected application-specific line replacements. The quantity and included components depend on the product. Check the product title, description, and photos before ordering to confirm whether the fuel injection line listing includes all the lines you need.

Can you help me find a replacement fuel injection line if I don't have the original part number?

You can provide your engine model, equipment model, and any available identification details. Clear photos showing the existing fuel injection lines, their connections, and their routing may also help with the review. We can use this information to investigate potential replacements, but compatibility should be confirmed before ordering.

Can I reuse my old fittings when installing a replacement fuel injection line?

This depends on the injection system design and the engine manufacturer's service requirements. Do not assume that fittings, sealing components, or damaged connections can be reused. Check the applicable service documentation and the replacement product's specifications before installation.

What should I do if my new fuel injection line leaks after installation?

Stop operating the engine and do not attempt to locate a leak with your hands. High-pressure diesel fuel can penetrate the skin and cause serious injury. Have a qualified technician inspect the line, fittings, connections, and installation using the engine manufacturer's service procedures. Do not tighten or disconnect injection lines while the system is pressurized.

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