Why Are Diesel Injectors So Expensive?

The cost of replacing your fuel injectors ranges from $350 to $850 on average. The cost range is determined by a variety of things.

  • Smaller vehicles with fewer cylinders and hence less expensive parts will be at the low end of the price range.
  • You will have to pay more for the repair if there are other issues with your fuel system, such as problems with the fuel pump. You may wind up paying far more than the pricing range given above, depending on the specific difficulties.

How often should diesel injectors be replaced?

Diesel fuel injectors have a shorter lifespan than their predecessors, requiring more frequent replacement to maintain peak performance. A decent quality diesel fuel injector has a life expectancy of roughly 150,000 kilometers. Around this time, they should be checked out by a specialist.

Is it OK to buy cheap fuel injectors?

Recently, a set of low-cost rebuilt injectors and a set of high-quality rebuilt injectors were put to the test. The low-cost injectors performed admirably, with no serious issues.

How much is a diesel fuel injector?

Diesel injection can be divided into two forms. A diesel injection pump generates fuel pressure and distributes fuel to each injector in the simpler form. Because the majority of the fuel management occurs at the injection pump, these use comparatively basic injectors. As a result, the injectors are less expensive, but the injection pump is frequently replaced on vehicles with higher mileage.

Common-rail direct injection is used in newer diesel engines. They still employ a centrally placed injection pump or a high-pressure fuel pump, but instead of directly connecting to each individual injector, they meter fuel to a fuel rail to which each injector is connected. Inline engines have a single rail that feeds all the injectors, whereas V6 or V8 engines have a fuel rail with 3 or 4 injectors on each cylinder bank. Each injector is individually regulated, which means that it has its own electronic component. This system is easier for the ECU to operate, resulting in improved performance, efficiency, and emissions; however, because each injector is now electronic rather than a mechanical nozzle, it is more intricate, and hence more expensive.

Injection pumps typically start at around $600-700 for a good refurbished unit and go up from there for a brand-new or remanufactured by the original manufacturer. Individual mechanical injectors cost roughly $200, whereas electronic common-rail injectors cost $300 or more. Keep in mind that, while your car only has one injection pump, each cylinder will have its own injector, which can soon add up. While a single injector can be replaced, they all wear out at a similar pace. Replacing the full set at once is preferable for long-term dependability and will save you money on both the purchase price and labor costs.

Is it worth replacing fuel injectors?

A vehicle’s lifeblood is liquid fuel (either gasoline or diesel). The engine is powered by this fuel, which allows you to go from point A to point B. Gasoline injectors are an important aspect of the internal combustion process because they inject fuel into the combustion chamber, as their name implies. Do these crucial components, on the other hand, ever need to be replaced? You don’t have to conduct the research because we done it for you.

Some fuel injectors are rated for one billion cycles, or roughly the vehicle’s lifetime. However, when you consider the harsh conditions of real-world driving and a lack of adequate maintenance, most fuel injectors may need to be replaced every 50,000 to 100,000 miles.

How long do diesel injectors last?

The fuel injection system is an important part of any diesel engine. The fuel is pressurized and injected into compressed air in the combustion chamber via this system. Feeding fuel to the injectors, regulating the fuel supply, modifying the injection time, and atomizing the fuel are all operations of a fuel injection system.

The proper amount of fuel, at the right time, in the right condition for combustion, must be delivered.

Fuel injectors help enhance fuel efficiency, reduce the need for fuel system maintenance, and keep emissions cleaner. A diesel fuel injector has an average lifespan of 100,000 kilometers. The nozzle and the injector body are the two primary elements of a standard fuel injector. If either of these components becomes clogged or destroyed, the vehicle’s overall performance is jeopardized.

  • Uneven idling or difficulty starting the car. The engine cranks, but it won’t start unless you crank it hard enough. On idle, the engine uses a variety of rev levels.
  • Misfire. A full diagnostic of a vehicle that is misfiring on ignition entails determining which component of the combustion process is missing. This is caused by either a lack of fuel injection or a lack of combustion chamber heat in a diesel engine. One of the cylinders’ fuel charge fails to ignite, or the fuel supply to the ignition system is insufficient.
  • There’s a strong odor of gasoline. The scent of diesel within the cabin indicates that there is a leak. This could be caused by a malfunctioning injector that allows fuel to leak out while it isn’t in use.
  • Emissions are filthy. Filters that are clogged and deposits on injectors create an uneven or partial fuel burn, resulting in a polluted environment around the exhaust and the discharge of white smoke from the exhaust pipe.
  • Fuel consumption has increased, while miles per gallon has decreased. Faulty injectors waste more fuel and have a direct impact on the performance and efficiency of your vehicle.

Clean fuel injectors are essential for your diesel engine to run at its best. Any of the following signs could suggest an issue with your fuel injectors, which should not be overlooked. Injectors that are unclean, clogged, or leaky are examples of this. If you’ve driven your car for more than 100,000 miles without replacing the fuel injectors, it’s time to have them looked at by a specialist.

What makes diesel injectors fail?

Excess wear, abrasion, and deposits, according to Afton Chemical’s North American Marketing Manager David Cleaver, are three significant causes of injector failure linked to the qualities of the fuel itself. Excessive wear is one cause of injector failure.


The most serious issue with rebuilt fuel injectors is their short lifespan. Fuel injectors should be replaced every 100,000 miles on average. Obtaining fuel injectors from a car with a high mileage indicates that they are towards or at the end of their useful life. The initial cost savings will almost certainly be insufficient to justify the purchase. You’re effectively betting on long-term viability.


For obvious reasons, purchasing new gasoline injectors makes sense. You will receive products that have been constructed by the manufacturer and have not been subjected to any wear and tear. However, this is the most expensive option available.


Many truck owners, though, eventually opt for remanufactured units for a variety of reasons. You receive the reliability of a new injector since remanufactured gasoline injectors have been thoroughly inspected and have had their internal parts updated as needed. You also get it at a cheaper price.

Because of these benefits, remanufactured items are gaining popularity. Over half of remanufacturing is done in the automotive, mining, and aerospace industries. Furthermore, the United States is the world’s largest consumer exporter of remanufactured items. In 2011, it was a $43 billion industry that employed at least 180,000 people.


There’s also the issue of long-term viability. By purchasing remanufactured car parts, you are not only helping to sustain jobs, but you are also helping to protect the environment. These goods have the potential to save millions of tons of natural resources while also preventing landfills from filling up. The worldwide remanufacturing sector is expected to reach $140 billion by 2020, thanks to the numerous lives of these vehicle parts. It’s all about combining the best of both worlds by mixing high-quality new internal elements that have been thoroughly tested with a repurposed body that reduces waste. The remanufacturing business contributes to environmental protection in a variety of ways, including energy conservation, raw material conservation, landfill area reduction, and air pollution reduction.

You may contribute to this economic growth and environmental effect by purchasing remanufactured injectors. You’ll also get a reasonable price and proven performance.