Bosch, Denso, Delphi, engine-specific injector identification, compatibility and evaluation. These pages focus on the evidence and decisions relevant to injector families & identification, with attention to safely identifying the actual cause before ordering expensive diesel injection components.
Explore this collection alongside the Technical Journal, the diesel code center and the nationwide mail-in service. The articles explain what to capture and when to involve a qualified specialist; they do not replace OEM diagnostic procedures.
Guides in this collection
Bosch CRI, CRIN and CRI3 Diesel Injectors: Identification and Testing
Identify Bosch common-rail solenoid, commercial-vehicle CRIN and piezo injector families before choosing a test or replacement.
Denso G2, G3, G4S and i-ART Injectors Explained
Understand Denso common-rail injector generations, compensation codes, identification and model-specific test limitations.
Delphi DFI Diesel Injector Families: Identification and Common-Rail Service
Explain Delphi/PHINIA DFI families, component-specific testing, codes, return leakage and the limits of interchange.
Diesel Injector Part Numbers: Where to Find Bosch, Denso, Delphi and OEM IDs
Practical diesel injector number identification using body markings, OEM catalogs and photographic documentation.
6.7 Power Stroke Injector Problems by Model Year
Approach 6.7L Power Stroke injector complaints by engine generation, rail pressure data, contamination and exact part numbers.
Duramax L5P Injector Problems: Testing, Identification and Next Steps
L5P injector diagnosis without confusing pump, supply, rail-pressure and cylinder faults.
Isuzu NPR 4HK1 and 6HK1 Injector Problems and Common-Rail Diagnosis
Commercial Isuzu injector complaints by engine family, chassis configuration, fault evidence and service eligibility.
Perkins 1104 and 1106 Injection Pump Identification and Failure Patterns
Identify Perkins 1104/1106 pump variants and avoid applying one model-family diagnosis to another application.
Hino J05E and J08E Fuel Injection: Injector and Pump Diagnosis
Commercial Hino injector and high-pressure pump diagnosis with year-specific identification and fleet documentation.
Diesel Injector Service Eligibility by Part Number and Engine
Understand what makes an injector eligible for supported specialist testing, repair or replacement discussion.
How to use these guides
Begin with equipment identification and the exact symptom, then review related tests and technical limitations. Where an article calls for a high-pressure fuel-system test or physical inspection, employ trained personnel and current manufacturer information. DCT does not guarantee repair, pricing or turnaround for an unidentified component.