CSF High-Performance All-Aluminum Auxiliary Radiator (MPN: 8187) for Select Mercedes-Benz 2015-2022

Fits select 2015-2022 Mercedes-Benz C63 AMG, AMG GT, GLE, and GLS models.

Maximize your cooling efficiency with the CSF High-Performance Auxiliary Radiator. Designed to work in tandem with the primary cooling system, this all-aluminum unit is critical for maintaining optimal engine water temperatures and managing the heat exchange for the air-to-water charge-air coolers. By reducing intake air temperatures (IATs) and expanding cooling capacity, it significantly prolongs the heat soak threshold during spirited driving or track use.

Constructed with CSF’s proprietary B-Tube technology, this radiator features a 42mm 2-row core—offering approximately 100% more capacity than the 26mm OEM unit. The design includes ultra-efficient 6.5mm tall multi-louvered fins to maximize surface area contact. Each unit is TIG-welded for durability and features a 1-hour "Mirror Finish" hand polish. For added protection, a detachable rock guard is included to prevent debris build-up and core punctures, a common failure point on factory radiators.

• Performance Core: 42mm 2-row core featuring B-Tube technology and 6.5mm multi-louvered fins.
• Construction: 100% all-aluminum TIG-welded construction with CNC-machined mounting brackets.
• OEM Integration: Features OEM-style "quick connect" inlet/outlet for a drop-in fit; may require minor plastic shroud trimming.
• Versatility: Multi-fit design works for both left and right sides. Note: some vehicles require two units for a full replacement.
• Quality Assurance: Individually leak and pressure tested; includes a 2-year limited warranty.
• Manufacturer Part Number: 8187