Radiator for Mercedes Benz S-Class (2018-2019) 3.0L 4.0L

Direct-Fit Aluminum Radiator for 2018-2019 Mercedes Benz S-Class

What it Does: The direct-fit engine cooling radiator restores thermal dissipation efficiency on the 2018-2019 Mercedes Benz S-Class to prevent overheating and maintain consistent operating temperatures under severe engine load.

The Stock Mercedes Benz S-Class Cooling Fatigue

The factory cooling system on the W222 chassis faces extreme thermal stress due to the compact hot-V configuration and high underhood temperatures generated by modern bi-turbo powertrains. Over time, the repeated heat cycling degrades the factory glass-filled nylon end tanks, making them brittle. The joint between the aluminum core header plate and plastic tanks frequently weakens, resulting in hairline fissures, weeping coolant, and sudden pressure loss. Additionally, road debris and fin oxidation diminish core surface heat rejection, triggering elevated coolant temps and potential engine derating.

The Engineering Solution

Engineered to resolve stock fatigue, this replacement radiator combines a high-efficiency aluminum tube-and-fin core with reinforced composite end tanks. The internal core features multi-louvered cooling fins optimized for maximum ambient airflow penetration and accelerated heat exchange. Precision-crimped gaskets and reinforced inlet/outlet necks resist expansion fatigue from elevated system pressures. Built to exact OE dimensional tolerances, it integrates directly with stock transmission oil cooler circuits and chassis mounts, completely restoring cooling performance for OEM part numbers A0995008800 and A0995007100 without line alteration.

Technical Specifications

Compatibility

• 2018-2019 Mercedes Benz S-Class S450 3.0L V6 (M276)
• 2018 Mercedes Benz S-Class S560 4.0L V8 (M176)

Frequently Asked Questions

Does this fit the W222 S-Class?
Yes, this is a direct fit for the 2018-2019 Mercedes Benz S-Class equipped with the M276 3.0L or M176 4.0L engine.

Are modifications required for the transmission cooler lines?
No, this unit features OE-pattern internal cooler fittings designed for factory quick-connect transmission lines with zero modifications.

The Mercedes Benz Precision Standard

European luxury flagships demand strict thermal tolerance management to protect advanced electronics and twin-turbo induction systems. This radiator delivers exact-fit thermal stabilization, preventing ECU engine de-rate safeguards and preserving factory powertrain reliability.