Description
Upgrade the exhaust flow and performance potential of your BMW B48-powered G-chassis vehicle with the DCE Parts B48 OPF & V-Band Flange Type Downpipe. Designed for selected BMW G-series models equipped with the B48 engine, factory OPF system, and V-Band flange connection, this downpipe is also compatible with the Toyota Supra A90 B48 2.0 application listed below.
This version is specifically designed for vehicles using OE bracket 18 32 8 659 800 and the corresponding mounting configuration. It is intended for EU6 RDE II B48 applications and features a V-Band flange connection for the applicable factory exhaust configuration.
The larger-flowing downpipe is designed to reduce exhaust backpressure and improve exhaust flow through the turbocharger system. Depending on the vehicle, ECU calibration, fuel, and supporting modifications, a performance downpipe may contribute to improved turbo response, quicker spool, and a more aggressive exhaust sound.
For catless configurations, ECU remapping may be required to accommodate the modified exhaust system and optimize vehicle operation. Actual performance gains will vary depending on the overall vehicle setup.
Downpipe Options
DCE Parts offers multiple configurations for this B48 downpipe:.
- High-Flow Cat: Available with a high-flow catalytic converter for customers who prefer to retain a catalytic converter.
Key Features
- Designed for BMW B48 G-chassis applications
- Compatible with selected OPF-equipped vehicles
- OPF & V-Band Flange Type
- Designed for EU6 RDE II B48 applications
- Requires OE bracket 18 32 8 659 800
- Compatible with the Toyota Supra A90 B48 2.0
- Available in catless and high-flow catalytic converter configurations
- Optional catalytic-converter-look catless design
- Larger-flowing downpipe design
- Helps reduce exhaust backpressure
- Can improve turbocharger response
- Enhances exhaust sound
- Maximum diameter: 5.7" / 145 mm including heat shield
- Diameter excluding heat shield: 5.5" / 140 mm
Specifications
- Engine: BMW B48
- Connection Type: V-Band Flange
- OPF Configuration: OPF-equipped vehicles
- Engine Standard: EU6 RDE II
- Required OEM Bracket: 18 32 8 659 800
- Maximum Diameter with Heat Shield: 5.7" / 145 mm
- Maximum Diameter without Heat Shield: 5.5" / 140 mm
- Available Configurations: Full Decat, Catalytic-Look Catless, High-Flow Cat
Fitment
BMW 2 Series
- G42 220i / 230i
BMW 3 Series
- G20 320i / 320iX / 330e / 330eX / 330i / 330iX
- G21 320i / 320iX / 330e / 330eX / 330i / 330iX
BMW X3
- G01 20i / 20iX / 30iX
BMW X4
- G02 20iX / 30iX
Toyota Supra
- A90 Supra B48 2.0
Critical Fitment Information
PLEASE VERIFY YOUR VEHICLE BEFORE ORDERING.
This downpipe is designed specifically for the BMW B48 engine with EU6 RDE II, equipped with the factory OPF system and V-Band flange connection.
The vehicle must use OEM bracket 18 32 8 659 800.
The required bracket has two mounting points—one on the bottom and one on the top. Compare your vehicle's factory bracket with the product images to confirm that the mounting configuration matches.
OE Bracket Number: 18 32 8 659 800
If you are unsure whether your vehicle uses the correct bracket, OPF configuration, or V-Band connection, please contact us before ordering for fitment assistance.
ECU Tuning
For catless downpipe configurations, ECU remapping may be required to accommodate the modified exhaust system and optimize vehicle operation. Performance results will vary based on the vehicle, ECU calibration, fuel, and supporting modifications.
