Available products
3 references
Frequently asked questions
About this category
The Mercedes-Benz OM646 270 CDI 170 hp injector category addresses a critical maintenance need for vehicles equipped with this 2.7-liter four-cylinder diesel engine. This range covers models produced between 2004 and 2010, where injector failure often manifests as misfires, excessive smoke, or power loss. Exchange standard injectors provide a remanufactured alternative that restores original fuel delivery characteristics while avoiding the premium of brand-new OEM components.
This injector range is curated from wholesale suppliers specializing in diesel fuel system components, ensuring compatibility across Mercedes-Benz models sharing the OM646 platform. The grossist model allows for competitive pricing while maintaining traceability to OEM specifications. Each injector is processed to remove carbon deposits and corrosion, then reassembled with new seals and tested for spray pattern consistency.
Professional uses by trade
Different user profiles approach injector replacement with distinct priorities: garages prioritize bulk availability and fast turnaround, stranded drivers seek immediate solutions, DIY mechanics value compatibility clarity, and German buyers expect precise technical documentation. The following usage scenarios reflect these varied needs.
- Le garagiste independant : Replace faulty OM646 injectors during scheduled maintenance to prevent engine damage and customer callbacks, using exchange standard units for cost predictability.
- L'automobiliste depanne : Order a single exchange standard injector for emergency replacement when the vehicle stalls or loses power unexpectedly on the road.
- Le passionne qui fait lui-meme : Source remanufactured OM646 injectors with clear OEM reference matching to perform the swap at home without specialized tools.
- Der deutsche Kaeufer (DACH) : Purchase exchange standard injectors with German-language technical datasheets and VAT-compliant invoicing for seamless business transactions.
- Le garagiste independant : Stock multiple injector variants to cover common OM646 failure scenarios, reducing downtime for repeat customers with similar engine issues.
- L'automobiliste depanne : Verify injector compatibility using the vehicle’s engine code before ordering to avoid mismatched replacements that could worsen performance problems.
- Der deutsche Kaeufer (DACH) : Benefit from core deposit systems that reduce upfront costs when returning used injectors for recycling or remanufacturing.
Range comparison
The following table compares the three Bosch OM646 injector variants available in exchange standard condition, each designed for specific engine configurations within the 270 CDI 170 hp range.
| Range | Use | Format |
|---|---|---|
| Injector Bosch 0445110025 | High-mileage OM646 engines with visible carbon buildup | |
| Injector Bosch 0445110121 | Mid-range OM646 variants with moderate wear patterns | |
| Injector Bosch 0445110200 | Low-mileage OM646 engines requiring preventive replacement |
How to choose
Selecting the correct OM646 injector requires attention to engine code, model year, and failure symptoms. The following criteria help professionals and owners make informed decisions without overcomplicating the process.
- Verify the engine code stamped on the cylinder block to match the injector’s OEM reference, avoiding cross-compatibility assumptions between different OM646 variants.
- Inspect the injector’s physical condition for corrosion or bent connectors, as these defects often indicate deeper system issues beyond the injector itself.
- Check the spray pattern consistency by comparing the new injector’s output to the old unit’s performance during bench testing before installation.
- Prioritize injectors with documented remanufacturing dates within the last 12 months to ensure fresh seals and calibrated flow rates.
- For bulk orders, request batch testing certificates that confirm uniform performance across all units in the shipment.
- Consider the vehicle’s operating environment—urban stop-and-go driving accelerates injector wear compared to highway use.
- Review the core deposit policy to calculate net costs after returning the faulty injector for recycling or remanufacturing credit.
Storage & logistics
Exchange standard OM646 injectors require controlled storage to maintain their remanufactured condition before installation. Keep units in sealed anti-static bags away from moisture and temperature extremes, as humidity can degrade electrical connectors over time. For wholesale buyers, organize inventory by OEM reference and engine code to streamline picking during high-volume orders. Avoid stacking cartons directly on concrete floors to prevent moisture absorption through packaging. Implement a first-in-first-out rotation system to ensure older stock is used before newer arrivals, reducing the risk of seal degradation in stored injectors.
Since 2026, our team has processed thousands of OM646 injectors through our exchange standard program, consistently observing that remanufactured units restore original power delivery when paired with fresh fuel filters and proper torque settings during installation.— 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.