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GSC P-D Toyota Supra/BMW B58/N54/S55 Viton Intake Valve Stem Seals - Set of 12-Valve Seals-GSC Power Division-GSC1090-
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GSC P-D Toyota Supra/BMW B58/N54/S55/S58 Viton Intake Valve Stem Seals - Set of 12

GSC1090
GSC1090
Valve Seals
20+ Units In Stock - Ships Next Business Day
$ 33.25 $ 28.26
$ 28.26

SKU: 1090

GSC P-D Toyota Supra 2020+ BMW B58 N54 S55 S58 Viton Intake Valve Stem Seals Set of 12

GSC P-D Viton intake valve stem seals provide precise oil control for Toyota Supra MK5 B58 and BMW N54 B58 S55 S58 inline-6 engines. This set of 12 seals fits DOHC 24-valve cylinder heads to prevent oil burn during high boost operation. Engineered for performance enthusiasts they maintain seal integrity under extreme heat and pressure.

Key Features

  • Viton Construction: Fluorocarbon rubber withstands temperatures over 400°F and resists fuel dilution for long-lasting performance in turbocharged applications.
  • Positive Seal Design: Ensures tight fit on 7mm valve stems with OEM groove dimensions to block oil entry into combustion chambers.
  • Low Friction Formula: Reduces drag on valve guides to support higher RPM and improve overall engine efficiency.
  • Complete Set of 12: Matches exactly 12 intake valves on B58 N54 S55 S58 cylinder heads for straightforward replacement.
  • High Boost Compatible: Handles pressures from stock turbo setups to upgraded big single turbos without seal failure.

Product Notes

  • Intake seals only exhaust seals available as GSC P-D part 1091.
  • Inspect valve stems and guides for wear before installation.
  • Packaged in protective plastic tray inside sturdy box.

Installation Notes

  • Professional installation recommended.
  • Remove valve springs and retainers using air held valve tool or spring compressor.
  • Compatible with stock valve guides and GSC oversized valves.

This Part Fits

Year Make Model Submodel
2020-2024 Toyota Supra 3.0T
2007-2011 BMW 135i E82 N54
2008-2013 BMW 335i E90 E92 E93 N54
2009-2010 BMW 535i E60 F10 N54
2008-2010 BMW X6 xDrive35i N54
2009-2011 BMW Z4 sDrive35i N54
2011-2013 BMW 335i F30 N55 but N54 compatible
2016-2019 BMW 340i F30 F32 B58
2016-2020 BMW 440i F32 F33 F36 B58
2016+ BMW M240i F22 B58
2017+ BMW M140i F20 B58
2018+ BMW Z4 M40i B58
2014-2021 BMW M3 F80 S55
2014-2021 BMW M4 F82 F83 S55
2018-2021 BMW X3 M F97 S55
2020+ BMW M2 Competition F87 S55
2019+ BMW M340i G20 G21 B58
2021+ BMW M3 G80 G81 S58
2021+ BMW M4 G82 G83 S58
2022+ BMW M2 G87 S58

Why Choose GSC Power-Division?

  • Proven in drag racing and track events with BMW and Toyota teams.
  • Manufactured with tight tolerances for drop-in reliability.
  • Focus on valvetrain components since 2005 for inline-6 turbo engines.

Frequently Asked Questions

  • Q: Will these seals fit my 2021 Toyota Supra 3.0?
    A: Yes they match the B58 engine in all 2020+ Supra models with stock or performance valve sizes.
  • Q: What makes Viton better than stock seals?
    A: Viton resists oil breakdown from blow-by gases and sustains elasticity at high cylinder head temperatures common in tuned turbo engines.
  • Q: Do I need special tools for install?
    A: Standard valve spring compressor and seal driver tool required seals press onto stems without adhesives.

Shipping & Handling

  • Method: UPS Ground or USPS Priority
  • Availability: In stock - ships same or next business day
  • Packaging: Compact box 6 x 4 x 2 inches
  • Weight: 0.25 lbs

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