Available products
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Frequently asked questions
About this category
This category is for Mercedes-Benz OM646 diesel injectors in 313 CDI 129 hp models, covering years of production where this engine was paired with common rail injection systems. Whether you're a professional mechanic, a DIY enthusiast, or a fleet manager, you'll find exchange-standard injectors here that restore engine efficiency without the cost of new OEM parts.
The range is built around core components from Bosch and Delphi, two brands known for their precision in diesel injection systems. These injectors are sourced from wholesale suppliers who specialize in remanufactured parts, ensuring consistent quality and availability for workshops and private buyers alike.
Professional uses by trade
Different users approach injector replacement with distinct needs: garages prioritize bulk availability and fast turnaround, while DIYers seek clear compatibility and simple returns. Fleet managers balance cost with reliability, and German buyers expect documentation in their language.
- Le garagiste independant : Replace worn injectors in OM646 engines to avoid repeated call-backs for misfires or power loss, using units pre-tested for flow consistency.
- L'automobiliste depanne : Swap a faulty injector yourself by matching the OEM reference, then return the old part for a deposit refund without visiting a workshop.
- Le passionne qui fait lui-meme : Order the exact Bosch or Delphi injector for your 313 CDI, then follow a step-by-step guide to restore engine smoothness without special tools.
- Der deutsche Kaeufer (DACH) : Nutzen Sie die Austausch-Injektoren mit deutscher Dokumentation, um die Kompatibilität mit Ihrem OM646-Motor sicherzustellen und die Rückgabe der Altteile reibungslos zu gestalten.
- Le garagiste independant : Stock these injectors to reduce downtime when a 313 CDI presents with rough idle or excessive black smoke from the exhaust.
- L'automobiliste depanne : Identify the correct injector by cross-referencing your vehicle’s engine code, then order with confidence knowing the part fits your motorisation precisely.
- Der deutsche Kaeufer (DACH) : Wählen Sie zwischen Bosch- und Delphi-Injektoren, die für den OM646-Motor kalibriert sind, um eine gleichbleibende Leistung ohne Garantieansprüche zu gewährleisten.
Range comparison
Below are the exchange-standard injectors available for your Mercedes-Benz 313 CDI 129 hp OM646 engine, listed with their exact OEM references for direct replacement.
| Range | Use | Format |
|---|---|---|
| Injector DELPHI 6510703087 | High-flow replacement for OM646 engines | |
| Injector Bosch 0445117035 | Standard-fit injector for 313 CDI models | |
| Injector Bosch 0445115047 | Economy option for budget repairs | |
| Injector Bosch 0445115033 | High-precision injector for reduced emissions | |
| Injector DELPHI 28307309 | Direct-fit injector for OM646 diesel engines |
How to choose
Selecting the right injector depends on your engine’s history, the symptoms you’re experiencing, and how you plan to use the vehicle after replacement.
- Check the injector’s OEM reference against your engine code to avoid mismatches that could worsen performance issues or damage the fuel system.
- Consider the injector’s condition: exchange-standard units are remanufactured to original specifications, offering a balance between cost and reliability.
- For fleets, prioritize injectors with consistent flow rates to maintain uniform performance across multiple vehicles in your rotation.
- If your engine runs roughly at idle or loses power under load, a high-flow injector may restore the balance lost to wear or clogging.
- German buyers should verify that the injector’s documentation includes German-language details for seamless registration and warranty claims.
- For DIY repairs, choose injectors with clear return policies to reclaim your core deposit without complications.
- Workshops should stock a mix of cartridge and complete assembly injectors to cover different repair scenarios efficiently.
Storage & logistics
Store exchange-standard injectors in a dry, temperature-controlled environment to prevent corrosion or seal degradation. For workshops, use labeled bins with dividers to separate Bosch and Delphi units by reference, ensuring quick retrieval during busy periods. Always keep the original packaging to facilitate returns of used cores, as most suppliers require the part to be returned in its original state to process the deposit refund.
Since 2026, we’ve supplied OM646 injectors to garages across Europe, ensuring each unit meets the same standards as the original equipment. Our team verifies compatibility before listing, so you can trust the part fits your motorisation without hidden surprises.— autoKUR team
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Useful references
For regulatory and sector references, see Reglement (UE) 461/2010 — pieces de rechange et garantie constructeur.





