Supertech VSI-BM60-E 6mm Intake Valve Stem/Guide Oil Seal for BMW B58/B58B30 (M140i M240i 340i/M340i 440i/M440i 540i 640i 840i X3/X4/X5/X6/X7 40i Z4 M40i) & Toyota GR Supra A90

Supertech 6 mm Intake-Side Valve Guide Oil Seal for BMW B58 and Toyota GR Supra A90

Restore tight oil control and top-end reliability on your turbocharged straight-six. This Supertech intake-side valve guide oil seal is designed for the BMW B58 and GR Supra A90 cylinder head, part number VSI-BM60-E. Perfect for fast-road cars, remapped daily drivers and track builds, it helps curb oil use, reduce blue smoke on start-up and keep intake ports cleaner under boost and high rpm.

We run these seals on our own B58 projects at MJ Modifications and our customers consistently report superb fit and long-term performance. If you are freshening a head, fitting cams, or chasing oil consumption, this intake stem seal is the dependable choice for a proper valvetrain refresh.

Key reasons to choose this Supertech seal

• Exact-fit 6 mm intake-side stem seal for B58 engines in BMW and Toyota applications
• Improves guide sealing to help minimise oil burning and intake valve deposits
• Built for high performance use, ideal for tuned, hybrid-turbo and track-day cars
• Consistent, precise sealing for smooth idle quality and stable vacuum
• Trusted by enthusiasts and workshops for B58 top-end rebuilds and upgrades

Search-friendly terms: B58 valve guide seal intake side, 6 mm stem oil seal, cylinder head overhaul parts, B58 top-end service kit components, BMW performance engine parts UK, Supra A90 engine rebuild parts, valvetrain refresh, oil control seal B58, smoking on start-up fix, intake guide seal replacement.

What you receive

1 x Supertech intake-side valve stem oil seal

Sold individually. Order the quantity required for your cylinder head.

Compatibility

Fits BMW and Toyota models equipped with the B58 engine, including:

• 1 Series F20 F21 M140i(x) B58 2016 to 2019
• 2 Series F22 F23 M240i(x) B58 2017 to 2020
• 3 Series F30 F31 F34 340i(x) B58 2016 to 2017
• 3 Series G20 G21 M340i(x) B58 2017 onwards
• 4 Series F32 F33 F36 440i(x) B58 2016 to 2017
• 4 Series G22 G23 M440i(x) B58 2017 onwards
• 5 Series G30 G31 540i(x) B58 2017 to 2020
• 6 Series G32 640i(x) B58 2017 to 2019
• 7 Series G11 G12 B58 2016 to 2020
• 8 Series G14 G15 G16 840i(x) B58 2020
• X3 M40i B58 2017 to 2020
• X4 M40i B58 2018 to 2020
• X5 G05 40i(x) B58 2018 to 2020
• X6 G06 40i(x) B58 2019 to 2020
• X7 G07 40i(x) B58 2019 to 2020
• Z4 G29 M40i B58 2017 to 2020
• Toyota GR Supra A90 B58 2020

Additional search terms customers use: BMW 340i valve guide oil seal, G20 M340i intake stem seal, G30 540i B58 head rebuild parts, G29 Z4 M40i valve seals, X3 M40i intake guide seal, Supra A90 B58 oil stem seal, B58B30 intake seal.

Part number

VSI-BM60-E

Fitting and support

Professional installation is recommended for all valvetrain components. For supply and fitting or a workshop quote, contact MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk and our team will be happy to help.

Brand

Supertech