Effective thermal management is absolutely critical for the B58 Gen 1 engine, particularly when you begin turning up the boost pressure on your 340i. Prevent heat soak and protect your engine’s internal components by installing high-capacity Intercoolers matched with smooth-flowing, durable Boost Pipes. Keep your coolant and oil temperatures strictly regulated during spirited driving sessions with high-efficiency Radiators and standalone Oil Coolers. Furthermore, to stop oily crankcase vapors from recirculating into your intake and forming restrictive carbon deposits on your valves, fit one of our premium Oil Catch Cans.