BMW Z4 (G29) Full Aluminum Closed-Box Cold Air Intake System | B58 3.0L Turbo (2019–Present)

Elevate the performance of your BMW Z4 (G29) with our Full Aluminum Closed-Box Cold Air Intake System, engineered for the B58 3.0L turbocharged inline-six.

Crafted from lightweight, high-strength aluminum, this intake is built as a fully enclosed system that keeps radiant engine heat away from the filter, ensuring your turbos are fed with consistently cool, dense air. The rubber-sealed lid allows the intake box to sit flush against the engine wall without scratching while creating an airtight seal that locks out hot air.

Unlike systems that include a replacement turbo inlet, this design makes use of your factory turbo inlet, ensuring OEM reliability and compatibility. The connection is made through a shorter reinforced rubber hose, reducing length, minimizing airflow disruption, and creating a smoother, more direct path to the turbo. This contributes to faster throttle response, reduced lag, and stronger midrange torque without unnecessary complexity.

Engineered with strategically placed slivers and inlets, the intake allows just enough excess airflow to prevent restriction under heavy load while maintaining the integrity of the closed-box design. This balance gives you cooler intake temps, consistent power delivery, and a refined induction tone that pairs perfectly with the Z4’s sporty roadster personality.

Key Features

• Full aluminum housing – lightweight, durable & highly heat resistant
• Closed-box design isolates filter from engine bay heat
• Rubber-sealed lid for flush fitment, no scratching, and airtight sealing
• Reuses factory turbo inlet for OEM reliability and fitment
• Shorter reinforced rubber hose improves airflow efficiency & responsiveness
• Strategic slivers/inlets introduce controlled airflow while minimizing heat soak
• Sharper throttle response & stronger torque curve
• Cooler intake temps for consistent horsepower delivery
• Durable silicone/rubber couplers withstand boost and heat cycles
• Direct OEM fitment for secure installation

FITMENT: Designed for BMW models with the B58 3.0L turbo inline-six, including: G29 Z4 M40i (2019–present).

Engine Compatibility: B58B30O1 turbocharged inline-six

Please refer to the “Fitment” section in the product description for compatibility details.