BMW M340i G20 G21 / M440i G23 2019+ B58 3.0L 4 inch Aluminium Cold Air Intake Kit

Product Overview

This 4 inch cold air intake kit is designed for 2019-onwards BMW models with the B58 3.0L turbocharged engine, listed by the supplier for the G20 and G21 M340i and G23 chassis. Made from aluminium, it replaces the factory intake to provide a larger, more direct path for filtered air and a sportier appearance in the engine bay.

Key Features and Benefits

• 4 inch intake size, as stated in the title
• Aluminium construction
• Designed for the B58 3.0L turbocharged engine
• Listed for G20, G21 and G23 chassis
• Retrofit and upgrade part, supplied new

Vehicle Compatibility

The supplier lists fitment for 2019+ BMW M340i with the B58 3.0L turbo engine on G20, G21 and G23 chassis; the title refers to 2020 M340i. The G23 is a 4 Series convertible, so please confirm fitment for M440i models. This fitment is supplier-stated and has not been independently verified.

Product Specifications

• Product type: cold air intake system kit
• Intake size: 4 inch
• Material: aluminium
• Engine: B58 3.0L turbo
• Chassis: G20, G21, G23
• Listed size: 43 x 34 x 24 cm
• Package size: 44 x 35 x 25 cm (carton)
• Gross weight: approx. 4.1 kg

Installation and Usage

Installation involves removing the factory airbox and intake ducting, transferring sensors and fitting the new intake. We recommend a technician familiar with modern BMW engines carry out the work. After fitting, confirm all couplers and clamps are secure and listen for any air leaks once the engine is running. Inspect and clean the filter regularly.

Package Contents

Sold as a single item in carton packaging. The listing implies the intake kit as pictured; filter, couplers, clamps and heat shield have not been confirmed by the supplier.

Important Fitment Notice

Please send us your VIN or chassis number before ordering so we can help check fitment. Images are for reference only. Intake modifications may affect emissions compliance, so check local requirements before fitting.