BMW X3 / X4 M40d B57 3" Stainless DPF Delete Downpipe

🔥 Performance Exhaust Upgrade for BMW B57 Diesel Engines

Improve exhaust flow and unlock the performance potential of your BMW X3 (G01) and X4 (G02) M40d with this 3" stainless steel DPF delete downpipe 

Designed as a direct replacement for the factory diesel particulate filter, this high-flow 76 mm downpipe reduces exhaust restriction and allows the turbocharger to operate more efficiently.

With reduced backpressure and improved exhaust flow, this upgrade supports stronger turbo response, improved drivability and increased performance when paired with appropriate ECU tuning.

⚙️ Key Features

• 3” / 76 mm High-Flow Downpipe Design

• Direct Replacement for Factory DPF Assembly

• Constructed from 316L Stainless Steel

• Improves Turbo Efficiency & Exhaust Flow

• Supports Performance Tuning Builds

• Precision Fabricated for OEM-Style Fitment

This downpipe is engineered for enthusiasts looking to maximise the performance of BMW’s 3.0L B57 diesel platform.

📦 Kit Contents

• 3" Stainless Steel DPF Delete Downpipe

• Downpipe Clamp

• Exhaust Gasket

🚘 Vehicle Fitment

Compatible with BMW models equipped with B57 3.0L diesel engines.

Models

• BMW X3 M40d (G01)

• BMW X4 M40d (G02)

Engine

• BMW B57 3.0L Twin-Turbo Diesel

The G01 X3 M40d features BMW’s powerful 3.0-litre inline-six diesel engine known for strong torque and performance in the M Performance SUV range.

⚠️ ECU Calibration Required

Installation of a DPF delete downpipe requires ECU calibration to properly disable the factory emissions system and prevent engine management faults.

Professional installation and software calibration are recommended.

📌 Important Notes

• Designed for motorsport or off-road use where emissions regulations permit

• Not suitable for vehicles requiring active emissions compliance

• Always confirm engine variant and chassis compatibility before ordering