BMW M240i downpipes
4 downpipes for the G42 BMW M240i (B58 3.0L turbo inline-six) from 3 brands. The downpipe joins the turbocharger outlet to the rest of the exhaust. Aftermarket versions are sold with a high-flow catalytic converter or without one.
Before you order
- Removing or replacing a catalytic converter with a part that is not certified for the vehicle is illegal for road use under the federal Clean Air Act. Catless parts are sold for off-road use only.
- In California and other CARB states a replacement converter needs an Executive Order number for the specific vehicle.
- Check the retailer listing for whether engine software changes are required.
- Listings are read from the retailer's G42 M240i category. xDrive and rear-wheel-drive cars can use different parts. Confirm drivetrain and model year on the retailer page before ordering.
Brands on this page: VRSF (2), CG Precision (1), Valvetronic Designs (1).
CG Precision · Part no. 0005DS1
DS-1 – Hi-Flow Race Catted Downpipe
Bolt on power!
VRSF · Part no. 10202011
VRSF Catted Downpipe Upgrade - Brushed Finish
Reduce Back-Pressure & Increase Power
VRSF · Part no. 504010
VRSF Replacement Chargepipe Methanol/Water Injection Bung Plug
This plug is a replacement for the following models: 10901020A, 10901020B, 10901020C, 10901020D, 10301050, 10101020 and any other VRSF chargepipe that utilizes a water injection bung
Retailer fitment note: Fits N54/ N55/ N20/ N26/ S55/ B58 Engines from 2007-2016
Valvetronic Designs · Part no. B58FF400CBR
B58N 400 Cell Catted Downpipe
Engineered for the Gen 2 B58 Turbocharged Inline-6 - High-Flow - EPA Compliant
Retailer fitment note: For 2025+ model years
More BMW M240i parts
- BMW M240i exhaust systems
- BMW M240i exhaust tips
- BMW M240i intakes
- BMW M240i charge pipes
- BMW M240i tunes & engine software
- BMW M240i intercoolers & charge cooling
- BMW M240i turbochargers & turbo parts
- BMW M240i fuel & ignition
- BMW M240i cooling upgrades
- BMW M240i engine & mounts
- BMW M240i drivetrain
- BMW M240i coilovers
- BMW M240i lowering springs
- BMW M240i suspension & chassis
- BMW M240i brake upgrades
- BMW M240i wheels
- BMW M240i wheel spacers & hardware
- BMW M240i front lips & splitters
- BMW M240i spoilers & wings
- BMW M240i rear diffusers
- BMW M240i exterior & aero
- BMW M240i interior
- BMW M240i lighting