Used Mercedes-Benz Engines For Sale

M274 2.0L Turbo (C300/GLC 300, 2014–2019) — Timing Chain Stretch & Intake Camshaft Actuator: The M274 develops timing chain stretch that causes a rattle on startup and eventually triggers timing correlation fault codes. The intake camshaft adjustment solenoid can also fail, causing rough idle and loss of power. Combined repair costs on a 100K+ mile engine make replacement the more practical path.

M272/M273 V6/V8 (E/S/ML/GL/R-Class, 2005–2015) — Balance Shaft Sprocket & Intake Manifold: The M272 V6 and M273 V8 suffered from a notorious balance shaft sprocket issue where the sprocket gear teeth wore prematurely due to a defective alloy, causing catastrophic timing loss. The repair requires removing the engine. The M272 also develops intake manifold swirl flap linkage failure. When the timing jumps, internal damage is catastrophic and irreversible. These are among our most commonly requested Mercedes engines — a replacement with verified sprocket integrity eliminates the risk entirely.

OM642 3.0L V6 Diesel (ML/GL/Sprinter) — Oil Cooler Seal & Exhaust Manifold Bolt: The OM642 diesel develops oil cooler seal leaks (oil mixes with coolant in the valley of the V6) and exhaust manifold bolt failures that cause exhaust leaks. Both are major repair operations that justify replacement on higher-mileage units.

M278 4.7L Twin-Turbo V8 — Hot-Vee Leaks: Similar to BMW's N63, the M278 mounts its turbos inside the engine vee where heat degrades gaskets and oil lines. Multiple oil and coolant leaks are common at 80K+ miles. The repair access is so limited that addressing multiple leaks individually costs more than a replacement engine with fresh seals — making the swap the more economical and comprehensive solution.