do88 Auxiliary Radiator – BMW M2 (F87, N55)

OVERVIEW

The F87 M2 uses a small auxiliary (remote) radiator in the front bumper to add coolant capacity to the N55. It is one of the first things to become marginal when the car sees track days or extra power. The do88 WC-280 replaces it with an aluminum unit holding far more core and coolant.

Core volume is 172 percent larger and coolant volume 228 percent larger than the factory part. It uses a 42 mm two-row core with multi-louvered fins, CNC-machined hose quick-connects and brackets, and a custom plastic air guide that keeps airflow going through the core. It's a drop-in fit with no modifications.

SPECS

• All-aluminum construction with continuous welds
• Dual core, 2 rows, 42 mm thick; multi-louvered 5 mm fins
• Core volume: 2,429 cm³ vs 892 cm³ OE — about 172 percent larger
• Coolant volume: 0.82 L (0.22 gal) vs 0.25 L (0.07 gal) OE — about 228 percent more
• CNC-machined hose quick-connects and brackets
• Custom plastic air guide
• Replaces OE 17118625447 and 51748064145

PARTS INCLUDED

• 1 × do88 aluminum auxiliary radiator with CNC-machined brackets and quick-connects
• 1 × plastic air guide

TECH RESOURCES

• Required extras: BMW-approved coolant to top up; a diagnostic tool to run the electric water pump bleed routine is recommended.
• Installation instructions (do88): WC-280 BMW M2 auxiliary radiator installation instructions (PDF)
• Installation notes: drop-in — remove the front bumper, disconnect and remove the OE auxiliary radiator and air duct, fit the do88 radiator and air guide on the factory mounts, reconnect and bleed.
• Pairs well with: the do88 M2 engine oil cooler (OC-130), which sits in the opposite side of the bumper.
• Price is for the item only; labor is not included.

PART NUMBER

• WC-280 — do88 Remote Radiator, BMW M2

VEHICLE APPLICATIONS