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Wanmax Racing
High Flow Racing Downpipe with 1/8 NPT EGT Bung for BMW B46 G20 G30 F32 230i 330i 430i Performance Upgrade
$186.00
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CODE: BMW B46 头段(拉丝勾网款 )
Categories: Exhaust Downpipe
100% ORIGINAL AND QUALITY
24 MONTHS GUARANTEE
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DESCRIPTION
This direct bolt-on catless exhaust downpipe is engineered for BMW B46 2.0L turbo engine platforms (2016+).
With a built-in woven flex pipe that absorbs engine vibration and eliminates pipe cracking. The optimized high-flow path reduces exhaust backpressure, improves throttle response, and delivers a deeper sport exhaust tone. This is a decat version without internal catalytic converter core, compatible with US-spec and global B46 models, also fits Toyota Supra and BMW Z4 G29 with B46 engine.
Constructed from heavy-duty stainless steel with brushed finish, this downpipe features a precision-woven flex joint to dampen vibration stress. Full professional TIG welding ensures robust, leak-free performance under high-temperature exhaust conditions. CNC machined flanges deliver stable sealing, and all factory mounting points are reserved for hassle-free bolt-on installation without cutting or modification. Pre-welded O2 sensor bungs support factory sensor installation, making it a versatile upgrade for both stock and modified setups.
VEHICLE FITMENT
| BMW B46 Downpipe 100% Fitment List | ||||
| Make | Chassis | Year Range | Model Variant | Engine Type |
| For BMW | F22 / F23 | 2017–2021 | 230i / 230i xDrive | 2.0L B46 Turbo I4 |
| For BMW | G42 | 2022–Present | 230i / 230i xDrive | 2.0L B46 Turbo I4 |
| For BMW | F30 / F31 / F34 | 2017–2018 | 330i / 330i xDrive | 2.0L B46 Turbo I4 |
| For BMW | G20 | 2019–Present | 330i / 330i xDrive / 330e | 2.0L B46 Turbo I4 |
| For BMW | F32 / F33 / F36 | 2017–2020 | 430i / 430i xDrive / Gran Coupe | 2.0L B46 Turbo I4 |
| For BMW | G22 / G23 / G26 | 2021–Present | 430i / 430i xDrive / Gran Coupe | 2.0L B46 Turbo I4 |
| For BMW | G30 | 2017–2023 | 530i / 530i xDrive / 530e | 2.0L B46 Turbo I4 |
| For BMW | G29 | 2019–Present | Z4 sDrive30i | 2.0L B46 Turbo I4 |
| For Toyota | A90 / DB82 | 2020–Present | GR Supra 2.0T | 2.0L B46 Turbo I4 |
KEY FEATURES
- Innovative 3-Bung Configuration (US-Spec Friendly): Specially engineered with 3 pre-welded O2 sensor bungs (M18x1.5). This provides a perfect, hassle-free match for North American / US-spec B46 engines without requiring any custom welding or midpipe modifications. It allows tuners to plug in a wideband AFR gauge directly, saving significant workshop fabrication costs.
- Heavy-Duty Interlocked Flex Section: Features a high-density, premium stainless steel braided flex pipe. It efficiently absorbs massive engine vibrations and manages extreme thermal expansion, effectively preventing downstream exhaust cracking and dramatically extending the lifespan of the entire setup.
- Precision CNC-Machined V-Band Connection: Equipped with a warp-free, thick heavy-duty V-band flange that ensures a 100% airtight and leak-free seal with the factory turbocharger. It guarantees factory-like seating and a fast, straightforward direct bolt-on installation with no extra modification needed.
- Premium T304 Stainless Steel Construction: Constructed from top-tier, mandrel-bent T304 stainless steel tubing with a uniform wall thickness. Combined with flawless, back-purged TIG welds, this downpipe is completely anti-rust, anti-crack, and thoroughly track-tested to withstand extreme track racing temperatures.
- Optimized High-Flow & Aggressive Sound: Designed as a smooth, catless straight-through internal architecture. By optimizing exhaust gas velocity and drastically reducing backpressure, it unlocks maximum horsepower, enhances linear throttle response, and delivers a deep, aggressive exhaust note.
- Upgraded Interlock Inner Liner Section:" Unlike cheap mesh-only flex pipes that collapse under high pressure, our heavy-duty interlocked inner liner ensures uninterrupted exhaust gas flow and maximum resistance to high turbo-back exhaust velocities.
- Standard 1/8" NPT EGT Bung:" The 4th smaller port is precisely threaded to 1/8" NPT, making it instantly compatible with 99% of aftermarket Exhaust Gas Temperature (EGT) sensor probes and racing gauges on the market.
TECH SPECIFICATIONS
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Product Type: Performance Catless Exhaust Downpipe
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Main Material: Stainless Steel
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Surface Treatment: Brushed stainless steel finish
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Flex Joint Type: Woven mesh flex pipe
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Sensor Interface: Pre-welded O2 sensor bungs
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Connection Method: Flange-to-flange connection
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Welding Type: TIG tungsten-inert-gas full penetration welding
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Applicable Engine: B46 2.0L Turbo
- Installation Type: OEM direct bolt-on replacement
WHAT'S IN THE BOX
1 x Exhaust downpipe assembly with flex pipe
Full Set OEM Matching Installation Clamps & Hardware Kit
