Description
B58 Twisted Steel High Flow Cat Downpipe – aFe Power 48-36317-HC
High Flow Catalytic Converter:
This down-pipe utilize a 400 CPSI (cell per square inch) catalytic converters for maximum flow.
3″ Interlock Flex Pipes:
The down-pipes utilizes heavy duty 3″ flex tubes with internal interlock liners.
Factory Mounting Locations:
The down-pipe mount directly to factory mounting locations and includes hardware for a hassle-free installation.
Tapered Design:
A unique 4″ into 3-1/2″ stepped design is used to increase exhaust velocity and increase usable torque. This means more aggressive throttle response and increased passing power.
Factory Style Connections:
Machined, factory style flanges are used for a secure leak-free seal.
TIG-Welded:
100% TIG-Welded by certified craftsmen for race proven strength and durability. TIG-Welding provides the strongest welds reducing stress cracks.
Brushed 304 SS Construction:
This down-pipe are constructed of 4″ into 3-1/2″ mandrel-bent, brushed 304 stainless steel tubing for maximum performance, corrosion resistance and strength eliminating cracking.
O2 Sensor:
Includes an additional bung for either a wide-band O2 gauge or auxiliary instrumentation.
Vehicle Fitment:
2016-2019 | BMW | 740i |
2016-2018 | BMW | 340i |
2016-2018 | BMW | 340i xDrive |
2017-2019 | BMW | 740i xDrive |
2017-2019 | BMW | M240i xDrive |
2017-2019 | BMW | M240i xDrive |
2017-2019 | BMW | 440i |
2017-2019 | BMW | 440i |
2017-2019 | BMW | 440i xDrive |
2017-2019 | BMW | 440i xDrive |
2017-2019 | BMW | 440i Gran Coupe |
2017-2019 | BMW | 440i xDrive Gran Coupe |
2019-2019 | BMW | M240i |
2019-2019 | BMW | M240i |
2017-2019 | BMW | M140i |
2020-2020 | Toyota | Supra |
2017-2019 | BMW | 340i GT xDrive |
advanced FLOW engineering (aFe Power) is a premier designer and manufacturer of automotive performance upgrade systems and components. Current product lines include cold air intake systems, high performance direct fit and racing air filters, exhaust systems, intercoolers, turbochargers, electronic programmers, diesel fuel systems, throttle body spacers, and more. aFe is passionate about providing the most compelling, innovative, and highest performing products that are designed, built and tested in the USA. aFe was founded in 1999 and has headquarters and manufacturing facilities in Corona, California, USA.
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