6541800265 BEMWQ Oil Cooler for Mercedes Benz W177 W247 W205 W213 C238 B907 M654

Product Introduction

The BEMWQ Oil Cooler (Part No.: 6541800265) is a high-efficiency thermal management component designed for Mercedes-Benz vehicles equipped with the M654 (OM654) 2.0L diesel engine. It is fully compatible with chassis models including the W177 (A-Class), W247 (B-Class), W205 (C-Class), W213 (E-Class), C238 (E-Class Coupe), and B907 (V-Class/Vito). This unit functions as a liquid-to-liquid heat exchanger, typically mounted near the engine block or oil filter housing, where it transfers excess heat from the circulating engine oil to the coolant, ensuring the lubricant stays within the optimal temperature range for consistent performance and engine protection.

Product Features

• Precision OEM Fitment:​ Manufactured to match the original equipment specification 6541800265, ensuring exact port alignment, thread engagement, and seamless integration with the M654 engine’s oil and coolant circuits without modification.

• High-Efficiency Heat Exchange:​ Constructed with a high-density aluminum core and precision-engineered internal flow channels to maximize the surface area for heat transfer, effectively dissipating high thermal loads generated by the diesel engine under various driving conditions.

• Durable & Leak-Resistant Build:​ Built using robust materials and equipped with high-quality seals/O-rings that resist degradation from prolonged exposure to hot oil, coolant, and thermal cycling, preventing internal cross-leaks and external seepage.

• Direct Bolt-On Design:​ Engineered as a complete assembly with integrated oil and coolant channels, allowing for a straightforward removal and replacement process using standard tools and existing mounting points.

Product Selling Points

• Preservation of Oil Quality & Viscosity:​ Prevents engine oil from overheating (which causes thinning, oxidation, and additive breakdown), ensuring the lubricant maintains its optimal viscosity to protect critical engine components like turbocharger bearings, variable valve timing units, and crankshaft bearings.

• Reduction of Engine Wear & Overheating Risk:​ Maintains stable oil temperatures even under severe driving conditions (e.g., stop-and-go traffic, high-speed cruising, or loaded driving), reducing friction-related wear and preventing heat-induced engine shutdowns or damage.

• Prevention of Fluid Contamination:​ Eliminates the common failure mode of internal seal rupture, which can lead to coolant mixing into the oil (causing a milky "mayonnaise" sludge) or oil leaking into the coolant, both of which are highly detrimental to the engine and cooling system.

• Cost-Effective Thermal Protection:​ Provides a dependable and economical alternative to dealership original parts for both corrective repairs (when dealing with leaks, clogs, or internal failure) and preventative maintenance, securing the long-term reliability and performance of the M654 engine.