CSF Auxiliary Radiator for 2015-2021 BMW F8X M3, M4 & M2 Competition - 8258

Key Features & Specs:

• Part Number: CSF 8258
• Product Type: High-performance auxiliary radiator
• Core Design: 2-row, 42mm high-performance core
• Core Thickness: 1.65 inches
• Tube Technology: CSF exclusive B-Tube technology
• Fin Design: 5mm Track-Spec multi-louvered fins
• Capacity Upgrade: 10% greater tank volume than OEM
• Core Size Increase: 6.4% larger core than OEM
• Construction: 100% TIG-welded aluminum
• Finish: Satin black
• Connections: OEM-style quick-connect inlet and outlet
• Position: Fits either left or right auxiliary-radiator location
• Rock Guard: Detachable rock guard included
• Transmission Cooler: No
• Fan Included: No
• Radiator Cap Included: No
• Installation: Direct drop-in fit; no modifications required
• Testing: Individually leak and pressure tested
• Warranty: 2-year limited warranty
• Quantity: Sold individually
• OE References: BMW 17112284603, 17112284604

Fitment:

• 2015-2018 BMW M3 F80 3.0L Turbo
• 2015-2020 BMW M4 F82/F83 3.0L Turbo
• 2016 BMW M4 GTS F82 3.0L Turbo
• 2018-2020 BMW M4 CS F82/F83 3.0L Turbo
• 2019-2021 BMW M2 Competition F87 3.0L Turbo
• 2020-2021 BMW M2 CS F87 3.0L Turbo
• Fitment Note: Each compatible vehicle requires two auxiliary radiators. CSF 8258 is sold individually and fits either the left or right position.

Upgrade supplemental cooling in your BMW F8X M car with the CSF 8258 High-Performance Auxiliary Radiator. This all-aluminum, direct-fit auxiliary radiator uses a 42mm two-row B-Tube core with updated Track-Spec multi-louvered fins for improved heat dissipation in street, track, and racing applications. Its multi-fit design installs on either the left or right side, while the included removable rock guard, OEM-style quick-connect connections, and satin black finish deliver durable OEM-plus performance.