CSF Auxiliary Radiator for BMW F87 M2 & F-Series B48/B58 - 8355

Key Features & Specs:

• Part Number: CSF 8355
• Product Type: High-performance auxiliary radiator
• Core Design: 2-row, 42mm high-performance core
• Tube Technology: CSF exclusive B-Tube technology
• Fin Design: 5mm Track-Spec multi-louvered fins
• Core & Tank Volume: Increased over the factory auxiliary radiator
• Construction: 100% TIG-welded all-aluminum construction
• Finish: Satin black OEM-plus finish
• Connections: OEM-style quick-connect inlet and outlet fittings
• Rock Guard: Detachable rock guard included
• Installation: Direct drop-in fit with no modifications required
• Position: Fits either left or right side, depending on application
• Quantity: Sold individually; most vehicles require two
• M2 Note: 2016-2018 BMW M2 requires one auxiliary radiator
• Testing: Individually leak and pressure tested
• Warranty: 2-year limited warranty
• OEM References: BMW 17118625447 / 17 11 8 625 447; BMW 17218625445 / 17 21 8 625 445
• Fitment Note: Confirm the original auxiliary radiator OEM number and vehicle position before ordering.

Fitment:

• 2016-2018 BMW M2 F87 3.0L Turbo
• 2016-2018 BMW 340i F30 3.0L Turbo
• 2016-2018 BMW 340i xDrive F30 3.0L Turbo
• 2017-2019 BMW 340i GT xDrive F34 3.0L Turbo
• 2017-2020 BMW 430i F32/F33 2.0L Turbo
• 2017-2020 BMW 430i xDrive F32/F33 2.0L Turbo
• 2017-2020 BMW 430i Gran Coupe F36 2.0L Turbo
• 2017-2020 BMW 430i xDrive Gran Coupe F36 2.0L Turbo
• 2017-2020 BMW 440i F32/F33 3.0L Turbo
• 2017-2020 BMW 440i xDrive F32/F33 3.0L Turbo
• 2017-2020 BMW 440i Gran Coupe F36 3.0L Turbo
• 2017-2020 BMW 440i xDrive Gran Coupe F36 3.0L Turbo
• 2017-2021 BMW M240i F22/F23 3.0L Turbo
• 2017-2021 BMW M240i xDrive F22/F23 3.0L Turbo

Improve auxiliary cooling performance with the CSF 8355 High-Performance Auxiliary Radiator for select BMW F87 M2 and Gen 1 B48/B58 F-Series applications. This satin black all-aluminum upgrade features a larger 42mm two-row core, increased tank volume, CSF B-Tube technology, and Track-Spec multi-louvered fins to support efficient heat dissipation during demanding street, track, or modified use. OEM-style quick-connect ports, a detachable rock guard, and direct-fit mounting create a durable no-modification replacement solution. Sold individually; most compatible applications use two auxiliary radiators, while the 2016-2018 BMW M2 requires one.