With a bit of practice, driving your vehicle becomes almost like second nature. You do not need to think about what you are doing when you decide to go somewhere, because you are so used to doing it. However, what happens underneath the hood is still a very complex process, and part of it is moving fuel from the fuel tank into the cylinders where it is exploded and turned into power to move your wheels.

Featured Products

  • Fleece Performance® Common Rail Injectors
    (1 reviews)
    # sp9513
    Common Rail Injectors by Fleece Performance®. Common rail injectors that are engineered to get the most out of your Cummins diesel. From the injector body to the nozzle, this injector was designed for maximum performance. The...
    $2,622.00 - $3,756.00
  • HKS® Fuel Injector
    (0 reviews)
    # sp12462
    Fuel Injector by HKS®. Designed utilizing the latest technology, this product by HKS features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed...
    $138.06 - $662.69
  • DeatschWerks® Fuel Pump and Fuel Injector Set
    (2 reviews)
    # sp5884
    Fuel Pump and Fuel Injector Set by DeatschWerks®. This set is a powerful combination of high-flow injectors that are balanced within 2% variation for better performance, easier tuning, and increased reliability and a...
    $339.00 - $689.00
  • Omix-Ada® Fuel Injector
    (0 reviews)
    # sp1403
    Fuel Injector by Omix-Ada®. Fuel injectors spray pressurized fuel into the engine in response to commands from the engine control computer in an electronic fuel injection system. Fuel injectors can fail in a number of ways: Dirty...
    $38.94 - $164.83
  • HKS® Fuel Rail Upgrade Kit
    (0 reviews)
    # sp12460
    Fuel Rail Upgrade Kit by HKS®. Fuel parts are very important to achieve "big power." HKS Fuel Delivery Kit does not include injectors, fuel line parts, and a regulator. To use this kit, the injector must be a stock or select one...
    $377.36 - $418.78
  • Fleece Performance® Injector Nozzles
    (0 reviews)
    # sp9506
    Injector Nozzles by Fleece Performance®. These are Common rail injector nozzles that are engineered to get the most out of your engine. The nozzle spray pattern and angle have been optimized to outperform a stock honed nozzle with...
    $980.40 - $1,626.40
  • Skunk2® Composite Fuel Rail
    (1 reviews)
    # sp7061
    Composite Fuel Rail by Skunk2®. Made from proprietary carbon-impregnated, aerospace thermo-polymer composite that is 33-percent lighter, 60-percent stronger, and operates up to 100-degrees F cooler compared to aluminum, the product...
    $205.99
  • DeatschWerks® Fuel Injector Set
    (2 reviews)
    # sp5882
    Fuel Injector Set by DeatschWerks®. Every set of fuel injectors is flow-matched and balanced for reliable and efficient performance. To ensure you get nothing less than the highest level of quality and durability, every product is...
    $179.00 - $1,529.00
  • Fleece Performance® Injectors
    (0 reviews)
    # sp9505
    Injectors by Fleece Performance®. These are injectors that are engineered to get the most out of your engine. The nozzle spray pattern and angle have been optimized to outperform a stock honed nozzle with the same flow rate. These...
    $2,320.00 - $4,504.00
  • HKS® 2 Jet Fuel Injector
    (0 reviews)
    # sp12443
    2 Jet Fuel Injector by HKS®. HKS original 2-Jet type Injector Upgrades were designed specifically for certain engines; therefore, installation is very simple. For higher combustion efficiency, this injector was designed to inject...
    $179.48 - $188.68
  • Accel® Stock Replacement Fuel Injectors
    (0 reviews)
    # sp2850
    Stock Replacement Fuel Injectors by Accel®. Provides precise control of fuel delivery and atomization for increased power, improved throttle response, and better fuel economy.
    $66.29 - $344.95
  • GReddy® Fuel Rail Set
    (0 reviews)
    # sp10278
    Fuel Rail Set by GReddy®. GReddy Universal Fuel Inectors are known to have reliable high capacity flow with an excellent spray pattern. These universal style low impedance (peak-hold) units come in 3 popular high flow sizes and are...
    $237.50 - $693.50
  • ATS Diesel Performance® Atomizer™ Power Module
    (0 reviews)
    # sp12098
    Atomizer™ Power Module by ATS Diesel Performance®. The ATS Atomizer controls engine fuel rail pressures in order to maintain an optimal volume of fuel to the injectors. By doing this, the fuel droplets are introduced into the...
    $470.27
  • Professional Products® Fuel Rail
    (1 reviews)
    # sp3469
    Fuel Rail by Professional Products®.
    $76.15 - $235.90
  • BBK® Billet Aluminum High-Flow Fuel Rail Kit
    (0 reviews)
    # sp2400
    Billet Aluminum High-Flow Fuel Rail Kit by BBK Performance®. While developing these fuel rails – the BBK team also made sure that these units would work stock or on other aftermarket intake manifolds so enthusiasts could get the...
    $209.99 - $219.99
  • AEM® Fuel Rail Accessories
    (0 reviews)
    # sp2582
    Fuel Rail Accessories by AEM®. AEM High Volume fuel rails feature a 1/2-inch fuel bore to support fuel flow for applications up to 1,000 horsepower. This large bore also dampens backpressure pulses created by larger injectors and...
    $0.39 - $10.21
  • HKS® Fuel Upgrade Kit
    (0 reviews)
    # sp12461
    Fuel Upgrade Kit by HKS®. Designed utilizing the latest technology, this product by HKS features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed...
    $750.13 - $1,357.59
  • AEM® High Volume Fuel Rail
    (0 reviews)
    # sp2586
    High Volume Fuel Rail by AEM®. AEM High Volume fuel rails feature a 1/2-inch fuel bore to support fuel flow for applications up to 1,000 horsepower. This large bore also dampens backpressure pulses created by larger injectors and...
    $24.31 - $200.95
  • Agency Power® Fuel Rail Kit
    (0 reviews)
    # sp3807
    Fuel Rail Kit by Agency Power®. The fuel rail has the largest bore currently on the market which results in better fuel flow then stock. As well, the Agency Power rail is designed to fit larger injectors, when upgrading to a larger...
    $500.00


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If a part of your vehicle begins to break down and needs to be replaced before you are left stranded, or you want to add an accessory to your vehicle, you want to have a wide variety of parts to choose from. This makes CARiD your destination, because we have every part you need, for every vehicle you have, so you can stay on the road.

The fuel injector may seem quite simple, but it actually works in a very complicated way. Rather than simply inject fuel into the cylinder, it needs to inject exactly the right amount, at exactly the right time, and at the right pressure to keep your vehicle working efficiently. It shoots the fuel in a fine mist, rather than as a normal liquid, which means the resulting explosion is more likely to consume all of the fuel, so you get better fuel usage. It needs to do this at precisely the right second, and can do it many, many times per minute when your engine is working hard.

It is a small component, about the size of a spark plug, and sits above the cylinder with the nozzle pointing directly into it. It is connected to the fuel rail, which is the component that supplies the fuel, and is controlled by a computer, which tells it when to insert fuel and how much of it to insert. The nozzle at the end is very small, which allows the fuel to be sent out in the fine mist required, and the electronic and fuel connections at the top are all designed to provide the fuel and signal without interfering with the process.

Of course, nothing is perfect and there are a few problems that can occur with your fuel injectors. For instance, the nozzle of the injector can become clogged with contaminants that escape the fuel filter, and these can cause the injector the spray a smaller amount of fuel than is required, or no fuel at all. The connections can fail on an individual injector, causing a lack of fuel to enter it, or even preventing it from receiving the instructions it needs. Each of these problems has a number of symptoms to warn you, and early action is important.

The symptoms include basic issues such as a slightly rough idle, or a little difficulty in getting the engine to start when it is cold. However, if you ignore these symptoms and allow one or more injectors to continue to fail, you can end up with serious symptoms, including an inability to start the engine at all. Very rough idling, missing or a severe lack of power are all warnings about your injectors, and taking immediate action, such as replacing one or more injectors, can prevent problems from becoming severe at the worst possible time.

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  • Performance Parts
    Fuel injectors spray fuel directly into your engine’s cylinders during the intake stroke when a piston moves down to allow air and fuel to fill the cylinder chamber. When injectors are malfunctioning, leaking, or have failed completely, they will cause rough engine performance, poor idle, reduced power and economy, and exhaust that’s rich enough in unburned fuel to damage expensive exhaust parts such as oxygen sensors and catalytic converters.

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Fuel Injectors Reviews

Average rating:  5  4.8 - 16 reviews
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Perfect Fit
These are hard to find with the proper length hose attached. I ordered 2 and they were perfect.
JPosted by Jon (Bradford, NH) /
1977 Volkswagen Beetle
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