BMW M340i G20 / M440i G22 B58 Gen 3 Racing Downpipe for GPF / OPF Models - Stainless Steel

Product Overview

This stainless steel racing downpipe suits the BMW G20 M340i and G22 M440i fitted with the third-generation B58 3.0T engine. The supplier lists this version for cars with a gasoline particulate filter (GPF / OPF). With 1.5 mm stainless pipework, it replaces the factory downpipe to cut exhaust restriction for tuned G-series cars, and is usually installed as part of a broader performance package with a matching tune.

Key Features and Benefits

• Stainless steel pipework
• 1.5 mm wall thickness
• Made for Gen 3 B58 engines
• Version listed for GPF / OPF cars
• Supplied new

Vehicle Compatibility

According to the supplier, this downpipe fits the BMW G20 M340i and G22 M440i with the Gen 3 B58 3.0T and GPF / OPF. Fitment is supplier-stated and has not been independently verified. Different drivetrains and body styles may vary, so please confirm your model and build date before ordering.

Product Specifications

• Product type: racing downpipe
• Material: stainless steel
• Wall thickness: 1.5 mm
• Engine: Gen 3 B58 3.0T
• Vehicles: BMW M340i G20, M440i G22
• Package size: 74 x 35 x 22 cm
• Gross weight: approx. 4.0 kg

Installation and Usage

The factory downpipe, heat shields and sensors must be removed before the new downpipe is installed and sealed at the turbo. Changes to the downpipe or particulate filter typically require an engine tune. Installation should be completed by a performance workshop experienced with modern BMWs, with leak and sensor checks and a road test afterwards.

Package Contents

Racing downpipe as pictured. The supplier has not confirmed whether gaskets, clamps, sensor fittings, a catalytic converter or a particulate filter are included; other contents not confirmed.

Important Fitment Notice

Racing downpipes are generally intended for motorsport use. Altering catalytic converters or particulate filters may make a road car non-compliant and fail WoF in New Zealand. Check local requirements before buying, and send us your VIN or chassis number so we can help confirm fitment before you order.