Diesel Injector Cross-Reference & Interchange Guide

1. 10-Digit Part Number Hierarchy

Locate the BOSCH part number laser-etched on the metal solenoid body, typically on the lower section near the electrical connector. The format is a standardized 10-digit code:

• 0445 110 xxx: Passenger car & light commercial solenoid common-rail injectors (CRI1, CRI2).
• 0445 115 / 116 / 117 xxx: Piezo common-rail injectors (CRIP2, CRIP3).
• 0445 120 xxx: Heavy commercial, truck, and industrial common-rail injectors (CRIN).
• 0438 xxx xxx: Unit Injector Systems (UIS / PDE) for older commercial platforms.

For each engine platform, there is typically a primary SKU plus 1–3 sister SKUs that share the same control valve casting but differ in internal nozzle spray hole diameter and IMA calibration.

2. Primary vs Sister SKUs (The IMA Coding Difference)

A common workshop trap is treating look-alike sister SKUs as interchangeable. For example, on the Renault F9Q 1.9 dCi platform:

3. Control Valve Part Number Series

The control valve regulates the hydraulic pressure above the nozzle needle. Two primary series cover the vast majority of diesel systems:

• F00VC codes: Cover CRI2 passenger car and light commercial platforms (e.g. F00VC01005, F00VC01052).
• F00RJ codes: Cover CRIN heavy-duty and commercial truck platforms (e.g. F00RJ01692, F00RJ02004).

The valve code is laser-etched on the internal valve disc body, never on the external plastic harness connector.

4. Step-by-Step Cross-Reference Procedure

1. Wipe carbon from the metal body: Use a solvent rag and strong LED light to inspect the laser etching on the metal housing.
2. Record the 10-digit Bosch SKU: Confirm the first four digits are 0445 or 0438.
3. Cross-match against vehicle manufacturer OE number: Verify that the Renault, PSA, BMW, or Mercedes part number stamped on the head matches the engine family index.
4. Check the nozzle tip stamping: Confirm the 9-character DLLA/DSLA code matches the calibration spec sheet.
5. Verify ECU coding compatibility: Check whether your scan tool (KTS, CLIP, Star/Xentry) supports generating or entering the replacement IMA code.

5. Common Costly Mistakes to Avoid

• Relying on OE part number alone: A single vehicle manufacturer OE number can map to two distinct Bosch SKUs across production model years.
• Connector shape alone: The external 2-pin electrical plug geometry is shared across multiple generations and does NOT confirm internal spray specifications.
• Ignoring the 12-month remanufacturing code: Bosch exchange injectors carry a 0986 435 xxx number that cross-references directly to the original 0445 110 xxx assembly.

6. Required Verification Tools