OM6122.7L Diesel
The OM612 is the inline-5 sibling of the OM611, sharing the same common-rail technology. Produced from 1999 to 2006, it powered the W203 C270 CDI, W210/W211 E270 CDI, W163 ML270 CDI and Sprinter vans. The 231 hp C30 CDI AMG variant is the rarest version. Swirl flap and injector seat leaks are the headline reliability concerns.
7
Fits chassis
1999–2006
Years built
231 hp
Power
Used to fully refurbished — quoted per unit
3-month parts warranty
Cover on every used part we dispatch.
Nationwide courier
Courier Guy & Aramex — door to door.
Fitment guaranteed
Send your VIN — we confirm before you pay.
Bench-tested
Inspected and tested before dispatch.
OM612 at a glance
| Displacement | 2.7L |
| Fuel type | Diesel |
| Power variants | 156 hp, 163 hp, 170 hp, 231 hp |
| Years produced | 1999–2006 |
| Replaces | OM605 |
| Replaced by | OM647 |
OM612 fits these 7 Mercedes chassis
Each card links to that chassis hub — full parts catalogue plus fitment notes.
- W2101999-2002E-ClassE270 CDI
- W2112002-2005E-ClassE270 CDIView parts
- W2032000-2005C-ClassC270 CDI, C30 CDI AMGView parts
- W1632000-2005M-ClassML270 CDI
- C2092002-2005CLK-ClassCLK270 CDI
- W901-W9052000-2006Sprinter313/413 CDI
- W4632001-2006G-ClassG270 CDI
Common OM612 problems
We disclose every known fault before sale. Transparency is cheaper than a bad return.
- Swirl flap failure with the plastic flaps breaking off and entering the cylinders
- Injector seat leaks causing characteristic 'black death' carbon deposits
- Variable nozzle turbocharger sticking
- EGR cooler clogging and coolant leaks
- Crankshaft position sensor failure
Featured parts for the OM612
No live OM612 listings right now
We strip 10–15 cars a month. Send your VIN and we'll WhatsApp you the moment one comes in.
OM612 rebuilds — what to budget
Bench-tested used long blocks start around R 55 000 delivered, full forensic rebuilds with new wear items run up to R 95 000. Final price depends on mileage, ancillaries (turbo, injectors, flywheel) and warranty tier — quoted per unit, no list-price surprises.
Send us your VIN — we'll match the right unit
We confirm engine number, ancillaries and warranty tier in writing before you pay.
Tell us about your Mercedes — we'll source the OM612
Three short steps. We reply within 2 hours during business hours with engine number, mileage, condition and a delivered price.
- Engine number confirmed against your VIN
- Bench-tested before dispatch
- 3-month warranty + nationwide courier
OM612 engine — common questions
Door-to-door courier from R 199
All major SA cities · 1–3 working days · Insured shipping on every order · Couriered from Centurion