Our hot-selling oil cooler with part number 2781880401 is specially designed for Mercedes-Benz vehicles with M278 and M157 V8 engines. Made of premium high-strength aluminum material, it features excellent thermal conductivity, high pressure resistance and anti-leakage performance. This oil cooler can effectively reduce engine oil temperature, stabilize lubrication system operation, avoid engine overheating damage and extend the service life of engine components. It is a perfect OEM replacement part with precise size and original factory standard structure, enabling direct installation without extra modification. Strict production and quality testing ensure stable performance and long durability. Widely applicable to multiple Benz models including S-Class, E-Class, CLS, GLE and GLS. With reliable quality and competitive price, it is a cost-effective maintenance accessory favored by global auto parts dealers.