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Fuel System Components

Fuel injector illustrations made by Caterpillar

  • Proprietary material and manufacturing: Cat injectors utilize specialized product metallurgy and proprietary manufacturing processes to deliver products capable of meeting the peak performance customers expect.

  • Extensive product coverage: In addition to new injectors, Reman exchange options are available for all engine models. Replacement products are offered for all Caterpillar engines, from pre-World War II to contemporary Tier 4 models. Replacement capsule valves, fuel nozzles, pencil nozzles, unit injectors, and the latest design electronic fuel injection products are offered to support all engines from the early D-Series to the latest Tier 4 compliant design. Customers can be assured they will have repair options throughout the useful life of their equipment.

  • 100% factory tested: Both new and Reman injectors are 100% factory tested and calibrated to specifications using the same test equipment to insure the highest level of performance and cleanliness compliance. As a result, customers receive high quality products - not only the first time, but every time.


    Advanced HEUI™ Technology by Caterpillar Yields Higher Performance
    Caterpillar introduced its Hydraulically Actuated Electronically Controlled Unit Injector (HEUI) in 1993. This achievement is recognized as one of the most significant advancements in diesel engine technology of the last century. HEUI uses engine oil pressure to power high-pressure fuel injection in diesel engines so injectors are no longer camshaft operated.

    HEUI surpasses many of the limitations of mechanical and conventional electronic injectors, and sets new standards for fuel efficiency, reliability and emission control.

    Available as standard equipment on an ever-widening range of Cat Engines and machines, the highly sophisticated HEUI system uses hydraulic energy instead of mechanical energy to operate fuel injectors. Working in tandem with the engine’s ECM (Electronic Control Module), the HEUI system provides extremely precise control of fuel metering and timing, resulting in unmatched engine performance and economy.

    In the traditional common rail fuel system, for example, the entire fuel line is under high pressure. With the HEUI system, fuel remains at low pressure until it is injected into the cylinder. Fuel pressure is created hydraulically in response to a signal from the Electronic Control Module (ECM). Because HEUI controls injection pressure electronically it is completely independent of crankshaft speed. Peak injection pressure can be achieved under acceleration and lug conditions, providing better fuel economy, better response and reduced smoke.

    HEUI injector technology is changing the way equipment owners, technicians and operators think about diesel engine performance bringing new value to your investment in Cat engines and machines.

  • CategoryPageFeaturedProducts
    Products: 2977
    Displaying products 1 - 12 of 2,977   Products Per Page
    Page  Go to previous page 1 - 249 Go to next page

    4I-5496
    Governors
    Length (in): 13.3
    Width (in): 13.3
    Height (in): 5.7
    Weight (lbs): 7.6

    353-6981
    Governors
    Length (in): 4.3
    Width (in): 3.1
    Height (in): 2
    Weight (lbs): 0.34

    4H-9611
    Fuel Injection Pumps
    Length (in): 42
    Width (in): 10
    Height (in): 3
    Weight (lbs): 0.97

    4H-9612
    Fuel Injection Pumps
    Length (in): 21
    Width (in): 4.5
    Height (in): 14.5
    Weight (lbs): 0.8

    4H-9613
    Fuel Injection Pumps
    Length (in): 23.4
    Width (in): 14.4
    Height (in): 4.4
    Weight (lbs): 0.87

    4H-9614
    Fuel Injection Pumps
    Length (in): 23.9
    Width (in): 9.4
    Height (in): 7.9
    Weight (lbs): 0.87

    4H-9615
    Fuel Injection Pumps
    Length (in): 29.2
    Width (in): 11.1
    Height (in): 5.7
    Weight (lbs): 0.97

    4H-9616
    Fuel Injection Pumps
    Length (in): 42
    Width (in): 5.5
    Height (in): 0.8
    Weight (lbs): 0.87

    4H-7390
    Governors
    Length (in): 2.7
    Width (in): 2.1
    Height (in): 2.1
    Weight (lbs): 0.45

    352-8532
    Fuel Lines / High Pressure Lines
    Length (in): 9
    Width (in): 7
    Height (in): 0.1
    Weight (lbs): 0.32

    352-8533
    Fuel Lines / High Pressure Lines
    Length (in): 12
    Width (in): 8
    Height (in): 2
    Weight (lbs): 0.37

    350-3619
    Fuel Transfer Pumps
    Length (in): 4.5
    Width (in): 4
    Height (in): 0.47
    Weight (lbs): 0.15



    Displaying products 1 - 12 of 2,977 Page  Go to previous page 1 - 249 Go to next page


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