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Air Intake for BMW X3 X4 M40i B58 (2018-2025) 3.0L Turbo Engine



Precio habitual $294.95
Precio de oferta $294.95 Precio habitual
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High-Flow Cold Air Intake System for 2018-2025 BMW X3, X4 (B58 / G01, G02)

What it Does: Replaces the restrictive factory induction system with a high-flow aluminum inlet and sealed airbox to optimize airflow and decrease intake air temperatures (IATs).

The Stock X3, X4 Airflow Bottleneck

The factory induction setup on the G01 and G02 B58 platforms is engineered primarily for cabin NVH (Noise, Vibration, Harshness) reduction rather than volumetric efficiency. The OEM system utilizes a restrictive pleated paper filter and corrugated plastic piping that creates significant internal turbulence. This design causes a measurable pressure drop across the intake tract, forcing the turbocharger to work harder to achieve target boost. Furthermore, the stock plastic housing is highly susceptible to heat soak during extended operation, resulting in elevated IATs which trigger the ECU to pull ignition timing, directly reducing power output.

The Engineering Solution

This KYOSTAR system features a mandrel-bent aluminum inlet pipe finished in heat-resistant black powder coating to ensure a smooth, laminar flow path into the turbo compressor wheel. The design integrates directly with the factory air scoop, forcing pressurized ambient air into a sealed heat shield that isolates the high-flow cone filter from radiant engine bay heat. The synthetic multi-layer filter provides a significantly larger surface area than the stock panel, reducing resistance and improving throttle response. Mechanically, this configuration improves turbo spool-up time and provides a distinct, unfiltered acoustic profile of the diverter valve and turbocharger without requiring ECU recalibration.

Technical Specifications

Fitment 2018-2025 BMW X3, X4
Engine / Chassis B58 3.0L Turbo / G01, G02
Stock Output 382 hp / 369 lb-ft (Approx)
Part Number N/A

Compatibility

  • 2018-2024 BMW G01 X3 M40i
  • 2018-2025 BMW G02 X4 M40i

The BMW Precision Standard

Engineered for the G01/G02 chassis, this system maintains the strict tolerances required for BMW electronics. The bolt-on installation ensures no permanent modifications are necessary, delivering a measurable increase in induction efficiency while preserving factory-grade sensor calibration and long-term reliability.


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BMW

Tamaño del motor

  • 3.0L

Año

  • 2018
  • 2019
  • 2020
  • 2021
  • 2022
  • 2023
  • 2024
  • 2025

Warranty

All products are backed by our Limited Lifetime Warranty. We stand by our quality. [See terms]

Air Intake for BMW X3 X4 M40i B58 (2018-2025) 3.0L Turbo Engine

$294.95