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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