OM646/OM647/OM648 CDI (Mercedes E/S/C-Class + Sprinter) 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 OM646/OM647/OM648 CDI (Mercedes E/S/C-Class + Sprinter) diesel engine family.
All Verified Part Numbers for OM646/OM647/OM648 CDI (Mercedes E/S/C-Class + Sprinter)
The following 1 common-rail injector assembly is calibrated for this engine family. Click the SKU to view individual test bench flow curves, sister cross-references, and vehicle applications.
| Part Number (SKU) | Primary OE Reference | Control Valve | Nozzle Code |
|---|---|---|---|
| 0445110156 → | A6480700187 (Mercedes-Benz) | F00VC01328 (Bosch F00VC30xxx solenoid-actuated, CRI/IPS19 generation) | 0433171800 (DLLA153P1270 stamping) |
Verified Vehicle Compatibility
| Make / Manufacturer | Vehicle Model & Platform | Engine Specification | Model Years |
|---|---|---|---|
| Mercedes-Benz | E-Class (W211) E 200 CDI / E 220 CDI / E 270 CDI / E 280 CDI / E 320 CDI | OM646 (CR 2.2L) / OM647 (CR 2.7L) / OM648 (CR 3.2L) — 90-150 kW | 2002-2006 |
| Mercedes-Benz | E-Class T-Model (S211) E 220 CDI / E 270 CDI / E 280 CDI / E 320 CDI | OM646 / OM647 / OM648 — 90-150 kW | 2003-2006 |
| Mercedes-Benz | S-Class (W220) S 320 CDI | OM648 (CR 3.2L) — 150 kW | 2002-2004 |
| Mercedes-Benz | C-Class (W203) C 220 CDI | OM646 (CR 2.2L) — 105 kW | 2004-2007 |
| Mercedes-Benz | CLK (C209) 220 CDI / 270 CDI | OM646 (CR 2.2L) / OM647 (CR 2.7L) | 2002-2005 |
| Mercedes-Benz | Sprinter II (NCV3, 4-/5-cylinder variants) | OM646 (CR 2.2L) — 80-110 kW | 2006-2009 |
Installation, Tightening Torque & Re-torque Protocol
Strict torque compliance is mandatory on OM646/OM647/OM648 CDI (Mercedes E/S/C-Class + Sprinter) 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: 20 N·m (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 OM646/OM647/OM648 CDI (Mercedes E/S/C-Class + Sprinter), 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 OM646/OM647/OM648 CDI (Mercedes E/S/C-Class + Sprinter)
What DTC fault codes indicate a failing injector on OM646/OM647/OM648 CDI (Mercedes E/S/C-Class + Sprinter)?
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 OM646/OM647/OM648 CDI (Mercedes E/S/C-Class + Sprinter) family be interchanged?
Not unless explicitly confirmed on the vehicle build plate. While sister SKUs share the same physical outer envelope and F00VC01328 (Bosch F00VC30xxx solenoid-actuated, CRI/IPS19 generation) 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.