4" Cold Air Intake System Kit w/Black Filter For 2019+ BMW M340i G20 G21 B58 3.0

Cold Air Intake System Kit for BMW M340i G20 G21 B58 3.0

This 4 inch cold air intake system kit with a black filter is designed to replace the factory air box on the BMW M340i G20 G21 B58 3.0, improving airflow to the engine. The intake kit for BMW B58 3.0 applications pairs a high-flow filter with a mandrel-bent tube for a direct-fit installation. Each cold air intake system kit for BMW M340i is built to support everyday driving and spirited performance alike.

Overview

This 4 inch cold air intake system kit for BMW M340i G20 G21 B58 3.0 delivers increased air volume to the engine by replacing the restrictive factory intake tract. The kit includes a black high-flow filter and a smooth-bore intake tube tailored to the B58 3.0 engine bay. It suits owners who want a bolt-on intake improvement with a clean underhood appearance.

Built For Performance

• 4 inch diameter intake tubing for increased airflow volume
• Black high-flow cone filter for improved filtration and breathing
• Direct-fit design for the BMW M340i G20 G21 B58 3.0 engine bay
• Mandrel-style smooth bends to reduce turbulence in the intake path
• Reusable filter element that can be cleaned and re-oiled
• Hardware and couplers included for a complete installation

Fits These Machines

• for BMW M340i G20
• for BMW M340i G21

On-The-Job Use

• Daily driving where improved throttle response is desired
• Spirited weekend drives on back roads
• Track day sessions where consistent intake airflow matters
• Underhood styling for car show and meet display

Specs At A Glance

Good To Know

Q: Will this intake kit trigger a check engine light? A: Most modern BMW engine management systems adapt to mild airflow changes, though a tune may be required on some builds to prevent a lean condition code. Confirm with your installer if you run other engine modifications.

Q: Is the black filter reusable? A: Yes, the cone filter can be cleaned and re-oiled instead of replaced. Follow the filter manufacturer's cleaning interval based on your driving conditions.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.