When a diesel injector has to be replaced, there are two main options: buying a new injector or choosing a remanufactured one. The price gap can be significant, but it should not be the only deciding factor.
The quality of the remanufacturing work, compatibility with the vehicle, the presence of a correction code and the warranty terms matter just as much. Here is what to compare before ordering.
What is a new injector?
A new injector is a part that has never been used. It is manufactured and calibrated to the specifications defined for a specific engine and injection system.
Depending on the product on offer, it may be:
- an injector supplied directly by the OEM manufacturer;
- a part sold through the vehicle manufacturer's network;
- a new injector intended for the spare parts market.
Its main advantage is that it carries no prior wear. It is generally delivered with its part number, its traceability and, where the system requires it, its own calibration code.
What is a remanufactured injector?
A remanufactured injector is a part that has already been used, then stripped down, inspected and restored. In a serious process the injector is cleaned, its wear components are replaced where necessary, and it is then tested on a suitable bench.
After repair, some injectors also have to be recalibrated in order to obtain a new correction code matching their actual characteristics.
Be careful: an injector that has simply been cleaned is not necessarily a genuinely remanufactured injector. Reliable reconditioning must come with precise checks and full traceability.
New or remanufactured injector: what are the differences?
| Criterion | New injector | Remanufactured injector |
|---|---|---|
| Condition of the part | Never used | Used part restored to working order |
| Price | Generally higher | Often more affordable |
| Inspection | Factory quality control | Inspection and recalibration essential |
| Correction code | Supplied where required | Must be supplied or renewed where required |
| Warranty | Depends on seller and manufacturer | Varies by remanufacturer |
Is a remanufactured injector reliable?
A remanufactured injector can be a reliable solution when it comes from a competent workshop and has been tested according to a suitable procedure. Quality can nevertheless vary widely from one supplier to another.
Before buying, check in particular:
- the exact part number of the injector;
- compatibility with the engine code;
- that a bench test has been carried out;
- the presence of the calibration code where required;
- the length and terms of the warranty;
- the traceability of the part;
- any conditions for returning the old injector.
When should you choose a new injector?
A new injector is generally preferable when you are looking for the most straightforward solution, when the vehicle is recent, or when the price difference with a remanufactured injector remains reasonable.
When should you choose a remanufactured injector?
Remanufactured can make sense to bring down the cost of the repair, particularly on an older vehicle. This option remains attractive provided the injector has genuinely been inspected, is compatible and comes with a clear warranty.
Do all the injectors need replacing at the same time?
It is not always necessary to replace every injector when only one is faulty. It is however advisable to check the whole set, since the injectors have generally operated under the same conditions.
Do not order on make and model alone
Two apparently identical vehicles can take different injectors depending on the year, the engine code, the power output, the emissions standard or changes to the injection system.
Before ordering, read our guide on how to read your injector's part number correctly.
FAQ: new or remanufactured injector
Does a remanufactured injector always come with a new code?
No. It depends on the type of injector and on the repair procedure. When recalibration changes its characteristics, a new code may be required.
Is remanufactured the same as a used part?
No. A used part is generally resold in its current condition. A remanufactured injector must have been inspected, restored and tested.
How can I be sure the injector is compatible?
The most reliable method is to cross-check the number marked on the old injector against the chassis number, the engine code and the exact specification of the vehicle.
