Introduction: Engine family codes provide a focused starting point for diesel injector identification, while an accurate match also uses the engine version, injector references, nozzle code, and original-equipment records.
When a replacement-parts specialist searches for a Mercedes-Benz diesel fuel injector, the engine family is often the first practical reference. A listing that names OM404, OM424, OM906, and OM926 narrows the search to four Mercedes-Benz engine families within the stated product range. This makes the codes useful for early identification and catalog research. The next step is to connect the relevant OM code with the exact injector reference, nozzle information, engine version, and original-engine documentation.
Why Engine Family Numbers Are Used as Filters in Diesel Injector Research
A diesel engine family number functions as a catalog address. It gives technical parts researchers a recognized starting point before they examine the injector assembly number, nozzle reference, or original-equipment number. This matters because a manufacturer name can cover many engine families, fuel-system arrangements, and equipment applications. A search for “Mercedes-Benz diesel injector” is broad, while a search for “OM906 diesel injector” directs attention to a defined engine-family record. The engine-family approach also reflects how a diesel fuel injector relates to the wider engine system. Diesel engines use fuel delivery and combustion processes that depend on the engine’s design and operating arrangement. Educational material on diesel engines describes the relationship between compressed air, fuel delivery, combustion, and power production. The injector is therefore studied in relation to a particular engine family rather than as an isolated component. The Shilin Diesel product record identifies the item as a mechanical diesel fuel injector in the `Fuel Injector Assy > Mechanical Injector` category. It associates the injector with Mercedes-Benz OM404, OM424, OM906, and OM926. These four codes provide searchable application keys for catalog comparison, inventory research, and a replacement-parts inquiry. They also create a more precise starting point than the Mercedes-Benz brand name alone. An engine-family code is an initial filter. Component references then add the detail needed for a more specific identification. This layered approach keeps the search focused while allowing the original injector, engine documentation, and supplier information to be compared together.
What OM404, OM424, OM906, and OM926 on One Listing Show About the Product Scope
The four codes represent the engine range associated with the DELPHI/Mercedes-Benz diesel fuel injector identified as B03006B. The same product record lists Mercedes-Benz OE references A0060176721 and A0020108351, together with nozzle reference L241PBB. These identifiers describe different parts of the identification record: the OM codes indicate engine families, B03006B identifies the Delphi injector record, the OE numbers identify the listed Mercedes-Benz references, and L241PBB identifies the nozzle reference. Heavy-duty diesel applications are commonly organized by engine, equipment, and regulatory context. Transport Policy’s heavy-duty diesel reference illustrates why technical catalogs separate engine and application information instead of placing every diesel product under one broad vehicle-brand heading. The four OM codes should therefore be read as a defined supplier-stated range connected to the product record.
1. The Four OM Codes Work as Searchable Engine-Family Keys Within a Defined Product Range
OM404, OM424, OM906, and OM926 give a parts researcher direct search terms for catalog records, workshop documentation, inventory systems, and supplier communication. For example, “OM906 fuel injector” is more precise than “Mercedes-Benz fuel injector” because it combines the brand with a named engine family. A short engine list can still be useful when vehicle model information is unavailable. A technical reader may already have an engine identification plate, an original injector, or an equipment record. In that situation, the OM code creates a bridge between the existing engine information and the B03006B product record. It also shows that the supplier associates one injector record with more than one named Mercedes-Benz engine family. The stated range remains limited to OM404, OM424, OM906, and OM926. It should not be extended to every Mercedes-Benz vehicle, truck, construction machine, marine engine, or generator set. The connection between an engine family and a specific equipment application belongs to the matching discussion that follows.
2. A Shared OM Family Reference Requires Version-Level Comparison Before Fitment Is Decided
Internal differences within an engine family can affect fuel-system components. Relevant differences may involve the engine version, original injector reference, nozzle specification, fuel-system arrangement, or equipment configuration. The shared family code establishes the starting group, while the individual engine record supplies the detail for a closer comparison. For the B03006B injector, the identification record includes the four OM families, Delphi reference B03006B, Mercedes-Benz OE references A0060176721 and A0020108351, and nozzle reference L241PBB. The product information also describes the injector as mechanical. These details work together, but each answers a different identification question. For example, an OM404 inquiry places the request inside the stated engine range. The next comparison can use the original injector marking, B03006B, either OE number, the L241PBB nozzle reference, and the engine documentation. Matching records across these fields create a stronger basis for a supplier confirmation. The OM404 code alone provides the search direction rather than the complete fitment conclusion.
What This Kind of Engine List Means for the Next Identification Step
After an OM code narrows the search, the most useful approach is to create one combined identification record. This record can include the complete OM engine code, engine version, original injector marking, Delphi reference, Mercedes-Benz OE number, nozzle code, and original-equipment information. Combining the fields prevents one familiar engine code from carrying more weight than the component references support. For this product, the visible identification set is DELPHI B03006B, Mercedes-Benz OE numbers A0060176721 and A0020108351, nozzle code L241PBB, and the listed engine families OM404, OM424, OM906, and OM926. The product is described as a mechanical injector. The record also states New condition, a weight of 300g, and a 12-month warranty. These are product-record details that can be included in an inquiry, while the exact matching relationship should be established through engine and original-equipment records. The original injector is often the most useful comparison reference because its stamped number and nozzle marking can connect a broad engine-family code with a specific component. Engine documentation, equipment records, and the existing injector can then be compared with B03006B and the listed OE numbers. L241PBB adds another useful reference for checking the injector and nozzle relationship. A clear inquiry can state the OM family, engine version if known, original injector number, nozzle number, equipment record, required quantity, and any relevant OE reference. For this product, B03006B, A0060176721, A0020108351, and L241PBB are the principal identifiers to include. The supplier can then respond with the applicable product information and commercial conditions. This identification method also keeps several technical questions distinct. Engine-family research identifies the Mercedes-Benz engine group associated with the injector. Part-number research identifies the component reference. Nozzle research identifies the nozzle reference shown in the injector record. Treating these as connected but separate fields makes replacement-parts communication more precise.
Conclusion
OM404, OM424, OM906, and OM926 give the DELPHI/Mercedes-Benz B03006B diesel fuel injector listing a defined engine-family starting point. The codes narrow the search and show the supplier-stated application range. A more complete identification combines the relevant OM code with B03006B, A0060176721, A0020108351, L241PBB, the engine version, and original-equipment records. Technical inquiries can include these references together when requesting fitment and supply information.
FAQ
Q：Why does a diesel injector listing mention OM404, OM424, OM906, and OM926 engines?
A：The four OM codes identify the Mercedes-Benz engine families associated with the listed mechanical diesel fuel injector. They provide searchable application keys and narrow the starting point for replacement-parts research. The listing connects these families with DELPHI injector reference B03006B, while the engine version, original injector references, and equipment records provide further identification detail.
Q：Does a B03006B injector listing work for every Mercedes-Benz OM404 engine variant?
A：The B03006B listing is associated with the OM404 family, and the specific engine version should be compared with the original injector reference, nozzle code, and engine records. The listing identifies the family range, while version-level information establishes the more precise component relationship. OM404 can therefore begin the search, followed by a supplier fitment confirmation using the remaining references.
Q：What additional engine information helps confirm a diesel fuel injector match for an OM-series engine?
A：Useful information includes the complete OM engine code, engine version, original injector marking, Mercedes-Benz OE number, nozzle code, and original-equipment records. For this product, B03006B, A0060176721, A0020108351, and L241PBB are relevant references. Together, these details create a more precise identification record than the OM family number alone.
Sources / References
Diesel engine - Energy Education
US: Heavy-duty: Emissions | Transport Policy
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