Mercedes-Benz OM651 2.2L CDI Complete Engine | Low-Mileage Replacement

Description

When you’re facing a catastrophic engine failure—be it a snapped timing chain, hydraulic lock, or catastrophic oil starvation—a Complete Engine Replacement is the most cost-effective way to get your Mercedes back on the road. We supply workshop-vetted OM651 2.2L CDI complete units, stripped from running vehicles and verified for structural and operational integrity.

These engines are the core of the Mercedes-Benz “workhorse” fleet. By choosing a pre-owned, verified unit, you bypass the massive costs of a full engine rebuild while ensuring your vehicle retains its original performance and reliability.

• Verified Integrity: Our engines undergo a comprehensive checklist: we verify timing chain tension, cylinder compression, and oil pressure before the engine is ever released for sale.

• “Complete” Configuration: These units typically come dressed with the essential ancillaries—Turbocharger, High-Pressure Fuel Pump (HPFP), Intake Manifold, and Common-Rail injectors—saving you significant labor time during the swap.

• Condition: Premium workshop-vetted units; chosen for low-mileage history, clean oil samples, and consistent performance during the donor vehicle’s pre-removal testing.

Key Technical Considerations for OM651 Swaps

Because the OM651 is used in both Front-Wheel Drive (W176) and Rear-Wheel Drive (W204) configurations, the engine blocks are externally similar but have crucial differences in mounting points and peripheral layout.

• VIN-Matching is Mandatory: We cross-reference your chassis number to ensure your new engine has the correct oil sump, auxiliary mounting brackets, and turbo orientation for your specific car.

• Ancillary Transfer: In some cases, you may need to swap specific sensors or electrical harnesses from your original engine if your vehicle has a different software revision (e.g., Euro 4 vs. Euro 6 emissions specs).

What We Verify Before Sale:

• Compression Test: Ensuring all four cylinders are within factory-specified balance.

• Timing Chain Health: Checking for excessive chain stretch or tensioner wear.

• Cooling System: Ensuring no signs of head gasket failure or internal cross-contamination.

• Turbocharger Integrity: Verifying zero shaft play and clean compressor/turbine blades.

Workshop Pro-Tip: When installing a complete replacement engine, never reuse the old coolant or engine oil. Treat it as a “fresh start.” Always install a new water pump, thermostat, thermostat housing, and high-quality synthetic oil (specifically Mercedes-Benz 229.51 or 229.52 spec) to protect the new unit. If you are swapping a W176/W204 engine, it’s also the perfect time to replace the rear main seal while the engine is out of the car, as it is a low-cost item that is difficult to reach once the engine is bolted to the transmission.

Key Features:

• Platform-Ready: Correct engine code (OM651) for direct fitment into W176/W204 chassis.

• Performance Tested: Proven reliability for a “turn-key” installation.

• Professional Sourcing: Expertly pulled from donor vehicles with documented maintenance histories.