Supertech BMW Toyota B58 Sodium Filled Exhaust Valve for M340i, 540i, Z4 M40i and A90 GR Supra
Upgrade your BMW B58 or Toyota A90 GR Supra with the Supertech sodium filled exhaust valve and protect your tuned engine under extreme heat and boost. This genuine Supertech B58 exhaust valve uses a sodium filled hollow stem and Inconel/Nimonic head to handle the brutal exhaust gas temperatures that come with hard road use, track days and high power builds. Ideal for Stage 2 and Stage 3 B58 setups, hybrid or big turbo conversions, and anyone chasing reliability and performance from their B58 valvetrain.
We run Supertech valves on our own B58 builds and our customers have been consistently impressed with the fit, finish and durability. If you are chasing dependable power from your M340i, 540i, 440i, M140i, Z4 M40i or A90 GR Supra, this is the B58 exhaust valve upgrade you want.
Why choose Supertech sodium filled exhaust valves for your B58
- Sodium filled hollow stem improves heat transfer away from the valve head for cooler running under sustained high EGTs.
- Inconel/Nimonic alloy resists corrosion and deformation in turbocharged, high temperature environments.
- Proven reliability for tuned B58 engines running higher boost and increased exhaust backpressure.
- Precision machining for OEM-like fitment and consistent sealing performance.
- Perfect for performance builds, track day cars and fast road use where longevity matters.
Key features
- Genuine Supertech quality for BMW and Toyota B58 applications.
- Built for high heat, high load turbocharged use.
- Consistent performance and durability with premium materials.
- Designed to meet or exceed strict industry standards.
Specifications
- Stem diameter: 0.234 in
- Overall length: 3.940 in
- Head diameter: 1.122 in
Compatibility
Direct fit for BMW and Toyota models equipped with the B58 engine, including:
- 1-Series F20 F21 M140i(x) B58 (2016-2019)
- 2-Series F22 F23 M240i(x) B58 (2017-2020)
- 3-Series F30 F31 F34 340i(x) B58 (2016-2017)
- 3-Series G20 G21 M340i(x) B58 (2017+)
- 4-Series F32 F33 F36 440i(x) B58 (2016-2017)
- 4-Series G22 G23 M440i(x) B58 (2017+)
- 5-Series G30 G31 540i(x) B58 (2017-2020)
- 6-Series G32 640i(x) B58 (2017-2019)
- 7-Series G11 G12 540i(x) B58 (2016-2020)
- 8-Series G14 G15 G16 840i(x) B58 (2020)
- X3 Series X3 M40ix B58 (2017-2020)
- X4 Series X4 M40ix B58 (2018-2020)
- X5 G05 X5 40i(x) B58 (2018-2020)
- X6 G06 X6 40i(x) B58 (2019-2020)
- X7 G07 X7 40ix B58 (2019-2020)
- Z4 Series G29 Z4 M40i B58 (2017-2020)
- Toyota A90 GR Supra B58 (2020)
What you need to install
Please note that the following items are required to install this valve on B58 applications:
- Supertech Audi BMW VW 6 mm Single Valve Lock Conversion
- Supertech BMW Toyota B58 Intake Integral Valve Stem Seal
What’s included
- 1 x Supertech sodium filled exhaust valve
Part numbers
- TEVI-1058-HS
- Also referenced as: TEVI-1058-HS-12
Fitting and support
Professional installation is strongly recommended. For expert fitting and B58 valvetrain advice, book your car in with Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Trusted by enthusiasts
We use Supertech B58 sodium filled exhaust valves on our own builds and our customers love the reliability and confidence they bring to tuned engines. If you want a robust B58 exhaust valve upgrade for your M340i, 540i, 440i, M140i, Z4 M40i or A90 GR Supra, this is the proven choice.
Popular search terms
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Manufacturer: Supertech