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Fuel injector

Two common rail diesel injectors, new or exchange units, machined steel body, nozzle nut and electrical connector

Injectors as exchange units

The injector meters and atomises fuel into the combustion chamber at very high pressure. On common-rail diesel engines, a clogged or worn injector means misfires, black smoke and excess consumption — and one tired injector wears the others. Replacement is done as a full set as soon as one fails.

autoKUR supplies injectors new and as exchange units, tested on a bench, with a 24-month warranty. The old injector returns under the core deposit scheme: amount and process on the Core deposit page.

Identifying the right injector

The most reliable reference is the code stamped on the injector body — for example 0445110119 for a Bosch injector. Search by reference takes you straight to the compatible vehicles. Otherwise, start from the vehicle:

The technical team confirms the matching before shipping.

Available products

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Frequently asked questions

About this category

This category groups fuel injector exchange units intended for garages, mechanically-minded drivers and enthusiasts who prefer to fit the part themselves, as well as buyers researching a repair from Germany, Austria or Switzerland. Each entry is organised around the vehicle, the engine code and the power output rather than a bare reference number, because that is how a real search usually starts, long before anyone knows a part number.

The range is built engine by engine, cross-referencing OEM numbers and known equivalences so the same physical component is not listed twice under different labels. As a wholesale-minded catalogue, the role here is limited to identifying and supplying the correct reconditioned unit; any fitting, adjustment or diagnostic work on the vehicle itself remains the task of a workshop or the person doing the job.

Professional uses by trade

A fuel injector rarely gets replaced on a whim; it follows a symptom, a diagnostic reading or a scheduled overhaul during a wider engine job. The way each profile approaches the search differs, from a workshop needing a fast turnaround reference to a private owner comparing an engine code against a part number.

  • Le garagiste independant : cross-checks the engine code and OEM number against several vehicles in the bay before ordering exchange injectors for more than one job at once.
  • Le garagiste independant : keeps a short list of frequent references for common ALFA ROMEO, AUDI and BMW engines to shorten the search when a customer describes a misfire.
  • L'automobiliste depanne : arrives with a symptom such as a rough idle, a loss of power or a warning light and searches by vehicle and engine size rather than by part number.
  • L'automobiliste depanne : compares the reconditioned exchange option against the cost and delay of a new part before deciding how to proceed with the repair.
  • Le passionne qui fait lui-meme : researches the CHRA, geometry and injector type of their own engine before ordering, wanting to understand what exactly will be exchanged.
  • Le passionne qui fait lui-meme : reads through equivalences across CHEVROLET, CHRYSLER and CITROËN engine families sharing a similar injector architecture before confirming a choice.
  • Der deutsche Kaeufer (DACH) : looks specifically for the engine code and Austauschteil status of the injector, checking compatibility across model years before adding it to a cart.

Range comparison

The comparison below lists the six vehicle families covered by the fuel injector exchange program in this category, with a typical use case and a generic wholesale packaging format for each line.

RangeUseFormat
ALFA ROMEOengine code matching for petrol and diesel unitsboxed exchange unit
AUDIreplacement across shared engine platformsboxed exchange unit
BMWdiagnostic-led replacement by engine codeboxed exchange unit
CHEVROLETcross-reference by OEM numberboxed exchange unit
CHRYSLERreplacement for known symptom patternsboxed exchange unit
CITROËNengine-specific reconditioned unit sourcingboxed exchange unit

How to choose

Choosing the right fuel injector exchange unit comes down to a handful of practical checks rather than guesswork, especially when the vehicle in front of someone does not match the reference expected from memory.

  1. Confirm the engine code stamped on the block or found in the vehicle documents before comparing it against any listed reference, since two similar-looking engines can take different injectors.
  2. Match the power output and production years of the vehicle to the listed compatibility range, since the same engine family sometimes changes injector type across a facelift.
  3. Check whether the unit is described as an exchange item requiring the return of the used part, since this affects how the order and any core deposit process will unfold.
  4. Note the OEM number and any listed equivalences rather than relying on the physical shape of the injector alone, as housings can look alike across unrelated engines.
  5. Consider whether the vehicle uses a variable geometry system or a simple fixed design, since this changes which family of parts is actually relevant to the search.
  6. Keep in mind that fitting the injector once received remains the task of a workshop or of the person carrying out the repair, not a service included with the part itself.

Storage & logistics

Exchange fuel injectors are typically supplied boxed as a single reconditioned unit, and the process generally involves a consigned part: the used injector is expected to be returned once the new one has been fitted, following the core deposit logic common to reconditioned engine components. For a workshop, this means keeping the removed part identifiable and set aside until the return step is completed. For an individual ordering from home, it means anticipating that the exchange is not finished until the old unit goes back. No fixed timeframe, stock level or return procedure beyond this general principle is stated here, since those details belong to the order and product page rather than to the category description.

Since 2026, our team has organised the fuel injector exchange catalogue by engine code first and model second, because a BMW owner searching for a replacement rarely arrives with a reference number, only an engine size and a symptom to describe.— autoKUR team

Related categories

Browse our other ranges:

Useful references

For regulatory and sector references, see Reglement (UE) 461/2010 — pieces de rechange et garantie constructeur.