Eventuri BMW X3/X4 M40I (G01/G02) Carbon Fibre Intake System

Solve the M40i's biggest intake weakness with the Eventuri Carbon Fibre Intake System - a fully sealed design built specifically to counter the heat soak caused by the intake's close proximity to the exhaust manifold. A gold-reflective heat shield minimises radiative heat transfer, while the maximised airbox volume (with a recess built in for the factory strut brace) keeps intake air temperatures low even in demanding conditions.

At the heart of the system is a 109mm (4.3") pre-preg carbon fibre inlet tube - an 82% larger cross-section than the stock convoluted tube - tapering smoothly to match the turbo inlet for an uninterrupted airflow path. A bespoke, ISO-certified high-flow dry filter increases filtration area over stock, and every component is built from 100% pre-preg carbon fibre with no fibreglass, for a genuinely smooth internal surface and consistent, repeatable power delivery.

Important: this intake is compatible with the B58D engine only - it does not fit standard B58 or B58C variants.

Why Choose This Intake System

• Fully sealed carbon airbox - prevents heat soak from the nearby exhaust manifold
• Gold-reflective heat shield - minimises radiative heat transfer for consistently low IATs
• 109mm carbon inlet tube - 82% larger cross-sectional area than the stock tube
• Bespoke ISO-certified dry filter - increased filtration area over the factory filter
• 100% pre-preg carbon fibre, no fibreglass - smooth internal surface for genuinely laminar airflow
• OEM-level fitment - CNC-machined mounting and sensor provisions, recessed for the factory strut brace

Compatibility

• BMW G01 X3 M40i 
• BMW G02 X4 M40i