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Auxiliary Heat Exchanger for Mercedes C63 / C63S AMG (M177)
Auxiliary Heat Exchanger for Mercedes C63 / C63S AMG (M177)
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Auxiliary Heat Exchanger for C63 / C63S AMG (M177)
Enhance your C63 or C63S AMG’s thermal management with this upgraded Auxiliary Heat Exchanger designed specifically for the W205 chassis with the M177 BiTurbo V8. This system supplements your front mount heat exchanger to deliver maximum charge air cooling — helping eliminate heat soak and maintain power delivery during hard driving.
Vehicle Fitment:
- Mercedes-Benz C63 AMG (2016–2019)
- Mercedes-Benz C63S AMG (2015–2019)
Key Features:
- High-Efficiency Core: Increases coolant volume and surface area to assist in reducing intake temps.
- Billet CNC End Tanks: Designed for durability, pressure resistance, and consistent long-term sealing.
- Non-Epoxied, Furnace-Brazed Construction: Resists failure under high thermal stress — ideal for performance builds.
- Direct Bolt-On Fit: Uses factory mounts and coolant lines for easy installation without modifications.
- Supports Tuned and Stock Vehicles: Ideal for street-driven AMGs and tuned builds alike.
Why Add an Auxiliary Heat Exchanger?
The factory cooling setup struggles to keep up during repeated pulls, track sessions, or hot-weather driving. Adding an auxiliary heat exchanger to your M177 cooling system improves IAT stability, prolongs ECU timing retention, and keeps horsepower consistent when it matters most.
Frequently Asked Questions
Does this replace the stock heat exchanger?
No — this unit is designed to work alongside the factory or aftermarket front mount heat exchanger, not replace it.
Is this compatible with all W205 C63 / C63S models?
Yes, it fits all 2015–2019 C63 and C63S AMG models equipped with the M177 4.0L BiTurbo engine.

