OM6511.8L / 2.1L Diesel
The OM651 is Mercedes-Benz's 4-cylinder common-rail diesel produced from 2008, available in 1.8L and 2.1L forms with single or two-stage turbocharging. It powers virtually every 4-cylinder diesel Mercedes from 2008-2018 across passenger cars and Sprinter vans. Pre-2015 units suffer from rear-mounted timing chain wear and Delphi injector issues; later units are markedly improved.
16
Fits chassis
2008–2019
Years built
204 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.
OM651 at a glance
| Displacement | 1.8L / 2.1L |
| Fuel type | Diesel |
| Power variants | 107 hp, 120 hp, 136 hp, 143 hp, 163 hp, 170 hp, 204 hp |
| Years produced | 2008–2019 |
| Replaces | OM646 |
| Replaced by | OM654 |
OM651 fits these 16 Mercedes chassis
Each card links to that chassis hub — full parts catalogue plus fitment notes.
- W2042008-2014C-ClassC200/C220/C250 CDIView parts
- W2052014-2018C-ClassC200d/C220d/C250dView parts
- W2122009-2016E-ClassE200/E220/E250 CDIView parts
- W2132016-2018E-ClassE200d/E220dView parts
- C2072009-2017E-Class CoupeE220/E250 CDI
- W6392010-2014Viano/VitoV200/V220 CDIView parts
- W4472014-2019Vito/V-ClassV200d/V220d/V250dView parts
- W9062009-2018Sprinter210/213/216 CDI
- W1662011-2018ML/GLE-ClassML/GLE250 BlueTECView parts
- X2042010-2015GLK-ClassGLK220 CDI
- X2532015-2019GLC-ClassGLC220d/GLC250dView parts
- W2462011-2018B-ClassB200/B220 CDIView parts
- W1762012-2018A-ClassA200/A220 CDIView parts
- C1172013-2019CLA-ClassCLA200/CLA220 CDI
- X1562014-2019GLA-ClassGLA200/GLA220 CDIView parts
- R1722011-2016SLK/SLC-ClassSLK250 CDIView parts
Common OM651 problems
We disclose every known fault before sale. Transparency is cheaper than a bad return.
- Timing chain stretch and tensioner wear, particularly on pre-2015 engines, causing rattle from the rear of the engine
- Early Delphi piezo injector failures on 220 CDI / 250 CDI variants causing rough running and vibration
- Vacuum pump seal leaks contaminating engine oil and causing coolant loss in some cases
- Inlet manifold swirl flap motor failures
- Diesel particulate filter (DPF) clogging on short-trip use
- EGR valve and cooler clogging
Featured parts for the OM651
No live OM651 listings right now
We strip 10–15 cars a month. Send your VIN and we'll WhatsApp you the moment one comes in.
OM651 rebuilds — what to budget
Bench-tested used long blocks start around R 35 000 delivered, full forensic rebuilds with new wear items run up to R 65 000. 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 OM651
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
OM651 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