Mercedes-Benz OM668 (1.7L CDI OM668.940 / OM668.941 / OM668.942) Diesel Injector
Cross-Reference & Technical Specs
Authoritative technical specifications, verified Bosch part numbers, control valve stamping codes, nozzle spray orifices, and hold-down tightening torque for the Mercedes-Benz OM668 diesel engine family.
All Verified Part Numbers for Mercedes-Benz OM668 (1.7L CDI OM668.940 / OM668.941 / OM668.942)
The following 4 common-rail injector assemblies are calibrated for this engine family. Click any SKU to view individual test bench flow curves, sister cross-references, and vehicle applications.
F00VC01024Nozzle Code: DLLA156P1155F00VC01054Nozzle Code: DLLA156P1155F00VC01024Nozzle Code: DLLA156P1155F00VC01054Nozzle Code: DLLA156P1155| Part Number (SKU) | Primary OE Reference | Control Valve | Nozzle Code |
|---|---|---|---|
| A6680700987, A6680701287, A6680780223 | F00VC01024 | DLLA156P1155 | |
| A6680701287, 6680701287, A6680700987 | F00VC01054 | DLLA156P1155 | |
| A6680700987, 6680700987, A66807009870080 | F00VC01024 | DLLA156P1155 | |
| A6680701287, 6680701287, A6680700987 | F00VC01054 | DLLA156P1155 |
Verified Vehicle Compatibility
| Make / Manufacturer | Vehicle Model & Platform | Engine Specification | Model Years |
|---|---|---|---|
| Mercedes-Benz | A-Class W168 A 160 CDI | Mercedes-Benz OM668 (1.7L CDI OM668.940 / OM668.941 / OM668.942) | 1998-2004 |
| Mercedes-Benz | A-Class W168 A 170 CDI | Mercedes-Benz OM668 (1.7L CDI OM668.940 / OM668.941 / OM668.942) | 1998-2004 |
| Mercedes-Benz | A-Class (W168) A 160 CDI / A 170 CDI | Mercedes-Benz OM668 (1.7L CDI OM668.940 / OM668.941 / OM668.942) | 1998-2004 |
| Mercedes-Benz | Vaneo (414) 1.7 CDI | Mercedes-Benz OM668 (1.7L CDI OM668.940 / OM668.941 / OM668.942) | 2002-2005 |
| Mercedes-Benz | A-Class (W168) A 160 CDI | Mercedes-Benz OM668 (1.7L CDI OM668.940 / OM668.941 / OM668.942) | 1998-2004 |
| Mercedes-Benz | A-Class (W168) A 170 CDI | Mercedes-Benz OM668 (1.7L CDI OM668.940 / OM668.941 / OM668.942) | 1998-2004 |
Installation, Tightening Torque & Re-torque Protocol
Strict torque compliance is mandatory on Mercedes-Benz OM668 (1.7L CDI OM668.940 / OM668.941 / OM668.942) common-rail cylinder heads. Over-torquing stretches the injector body or strips the head clamping threads, while under-torquing allows combustion blow-by past the copper sealing washer:
- Hold-down clamp bolt: 7 N·m + 90° (cold state). Always clean the cylinder head recess with an injector seat reamer.
- High-pressure rail flare nut: 25-30 N·m using a dedicated 17 mm line wrench.
- Return leak-off banjo bolt: 9-12 N·m with fresh copper washers on both sides of the banjo union.
After fitting replacement injectors on Mercedes-Benz OM668 (1.7L CDI OM668.940 / OM668.941 / OM668.942), generate or program the cylinder-specific IMA calibration code into the engine ECU using an OEM-level scan tool (Bosch KTS, Renault CLIP, or VAG-COM) to prevent cylinder power imbalance and rough idle.
Technical Diagnostics FAQ for Mercedes-Benz OM668 (1.7L CDI OM668.940 / OM668.941 / OM668.942)
What DTC fault codes indicate a failing injector on Mercedes-Benz OM668 (1.7L CDI OM668.940 / OM668.941 / OM668.942)?
The most frequent fault codes are P0201 through P0204 (Injector Circuit Malfunction on Cylinders 1-4), P2146/P2149 (Injector Group Supply Voltage Error), and P0087 (Fuel Rail Pressure Low due to excessive internal leak-off). Measure solenoid coil resistance across the pins (0.5-1.5 Ω) and perform a graduated-bottle dynamic leak-back test to pinpoint the leaking cylinder.
Can sister SKUs within the Mercedes-Benz OM668 (1.7L CDI OM668.940 / OM668.941 / OM668.942) family be interchanged?
Not unless explicitly confirmed on the vehicle build plate. While sister SKUs share the same physical outer envelope and F00VC01024 control valve, they differ in nozzle spray orifice angle and factory IMA flow calibration. Mixing sister SKUs on the same engine block can trigger rough idle, elevated exhaust gas temperatures (EGT), and MOT emissions failure.
Which specific Bosch injectors fit the Mercedes-Benz OM668 (1.7L CDI OM668.940 / OM668.941 / OM668.942) engine?
The verified genuine Bosch common-rail injectors engineered for the Mercedes-Benz OM668 (1.7L CDI OM668.940 / OM668.941 / OM668.942) engine family are:
- Bosch 0445110115 Common Rail Injector → (OE: A6680700987, A6680701287, A6680780223) — Control Valve: F00VC01024, Nozzle Code: DLLA156P1155
- Bosch 0445110195 Common Rail Injector → (OE: A6680701287, 6680701287, A6680700987, 6680700987, A6680700787) — Control Valve: F00VC01054, Nozzle Code: DLLA156P1155
- Bosch 0445110116 Common Rail Injector → (OE: A6680700987, 6680700987, A66807009870080, 66807009870080) — Control Valve: F00VC01024, Nozzle Code: DLLA156P1155
- Bosch 0445110196 Common Rail Injector → (OE: A6680701287, 6680701287, A6680700987, 6680700987) — Control Valve: F00VC01054, Nozzle Code: DLLA156P1155