The S58 engine in the G8X M2/M3/M4 has an engine oil cooler mounted horizontally beneath the front central radiators. The original oil cooler uses a tube-and-fin core, a construction that's genuinely easy to damage from stone chips or other road debris given its design and location. It's not rare for the factory oil cooler to start leaking as a result, and such oil leaks can critically damage the engine.
do88's replacement offers a much more durable design while also improving cooling performance at the same time, increasing core volume by 57% and active cooling surface area by 14% compared to the factory unit. It's a genuine drop-in fit, with everything needed for straightforward installation included, no modifications required.
Why Choose This Engine Oil Cooler
Directly addresses a genuine, potentially engine-fatal OEM failure point
57% larger core volume, 14% larger active cooling surface area than stock
More durable construction, genuinely more resistant to road debris and stone chip damage
Improved cooling performance alongside the durability upgrade
Includes everything needed for installation, no modifications required
