do88 Engine Oil Cooler – BMW M2 / M3 / M4 (G87 / G80 / G82, S58)

OVERVIEW

On track, S58 oil temperatures climb quickly, and the factory tube-and-fin oil cooler under the front radiators runs out of capacity. The do88 OC-200 replaces it with a bar-and-plate cooler that has 57 percent more core volume and 14 percent more active cooling area, built from a 3D scan of the factory mounting area so it sits horizontally in the same place under the center radiators.

The tanks are TIG-welded aluminum and the kit includes the hardware and rivet nuts needed for the new mounting points. It also holds roughly twice the oil of the OE cooler, about 8 dl against 4.2 dl, so plan to top up the engine oil after installation.

SPECS

• Bar-and-plate core (OE: tube-and-fin)
• Core volume 57 percent larger than OE
• Active cooling area 14 percent larger than OE
• TIG-welded aluminum tanks
• Mounts horizontally in the OE location beneath the front center radiators
• Oil capacity about 8 dl (OE about 4.2 dl)
• Replaces OE 17118095293, 17215A4DF50

PARTS INCLUDED

• do88 performance oil cooler
• 2 × silicone caps 21 mm and 2 × silicone caps 16 mm (for capping the oil lines)
• 2 × M8×20 screws and 2 × M8 rivet nuts
• 2 × M6×20 screws and 1 × M5×12 screw

TECH RESOURCES

• Required extras: engine oil to top up after installation (the do88 cooler holds about 4 dl more than stock), a drill with a 12 mm bit and a rivet-nut tool (do88's instructions show a nut-and-washer alternative).
• Installation instructions (do88): OC-200 S58 engine oil cooler installation instructions (PDF)
• do88 video (S58 parts overview): do88 BMW G8X S58 upgrades – oil cooler section (YouTube)
• Installation notes: remove the undertray and lower lip, disconnect the oil lines and cap them immediately with the supplied caps. Drill out the curb-descent damper rivets, transfer the OE brackets and rubber inlays to the do88 cooler, drill the lower impact beam to 12 mm and fit the M8 rivet nuts, then mount the cooler and reassemble.
• After install: run the engine and check the oil level; top up to specification.
• Instructions are shot on an M2; panel removal differs slightly on the M3 and M4.
• Price is for the item only; labor is not included.

PART NUMBER

• OC-200 — do88 Engine Oil Cooler, BMW M2 M3 M4 G80 G82 G87 (S58)

VEHICLE APPLICATIONS