AMS Performance 2019+ BMW M340i B58 Heat Exchanger

OVERVIEW

Your B58-powered M340i doesn't use a traditional air-to-air front-mount intercooler — it relies on coolant and an air-to-water heat exchanger to cool the intake charge. The small factory unit heat-soaks quickly under hard use, robbing power. The AMS Performance BMW M340i B58 Heat Exchanger is a direct-fit upgrade that keeps intake temps low and power consistent whether you're drag racing, running high-speed pulls, or living in a hot climate. It slides into the factory mounts and connects to the existing coolant lines — no cutting or drilling.

SPECS

• Motorsport-grade dual-pass heat exchanger core
• 54% increase in core volume over stock
• 122% added coolant capacity for greater thermal stability
• CNC-machined 6061 T6 billet aluminum end tanks
• OEM-style fitment features for secure, factory-style mounting
• 5mm tall louvered fins for maximum heat-transfer efficiency
• Plug-and-play install using factory hoses, clamps, and mounting points

PARTS INCLUDED

• Fully assembled direct-fit heat exchanger
• Comprehensive installation instructions

TECH RESOURCES

• Recommended companion: AMS BMW B58 Intake Manifold. See also our AMS G8X S58 Heat Exchanger for M2/M3/M4.
• Install instructions (PDF): AMS Heat Exchanger Install Guide
• Install/overview video: AMS Heat Exchanger (YouTube)

PART NUMBER

• AMS.51.02.0001-1

VEHICLE APPLICATIONS