SKU: C14208-063 | UPC: 191070590307
Cometic Gasket 2019+ BMW/2020+ Toyota B58TU Gen 2 .063in DST Cyl. Head Gasket - 83mm Bore
This Cometic cylinder head gasket delivers precise sealing for 2019 and later BMW models and 2020 and later Toyota GR Supra with B58TU Gen 2 engines modified to 83mm bore. The .063-inch thickness supports custom compression ratios in high-performance builds. It withstands extreme boost pressures and temperatures for dependable operation.
Key Features
- Multi-Layer Steel Construction: Stainless steel core layers with wire-arc sprayed coating resist blowout and maintain seal integrity under high cylinder pressures
- .063in Thickness: Provides exact deck clearance control for tuned engines targeting specific compression heights and ratios
- 83mm Bore Diameter: Matches enlarged cylinder bores in stroker kits and performance piston setups for leak-free combustion sealing
- DST Sealing Technology: Proprietary design enhances surface conformability and pressure distribution for consistent performance
- Full Fire Ring: Contains combustion gases effectively preventing blow-by in turbocharged 3.0L applications
Product Notes
- Intended for 83mm bore engines only verify cylinder dimensions prior to use
- Pre-flattened for immediate installation no resurfacing required
- Packaged flat to prevent distortion during shipping
Installation Notes
- Professional installation recommended.
- Clean deck surfaces thoroughly and use OEM or ARP head studs with specified torque sequence.
- Compatible with factory head bolts reuse only if undamaged.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2024 | Toyota | GR Supra | 3.0L Turbo B58 |
| 2019-2024 | BMW | 3 Series | 330i xDrive G20/G21 |
| 2020-2024 | BMW | 5 Series | 540i xDrive G30 |
| 2019-2024 | BMW | X3 | xDrive30i G01 |
| 2020-2024 | BMW | X4 | xDrive30i G02 |
| 2019-2024 | BMW | X5 | xDrive40i G05 |
| 2020-2024 | BMW | X6 | xDrive40i G06 |
| 2019-2024 | BMW | X7 | xDrive40i G07 |
| 2019-2024 | BMW | Z4 | M40i G29 |
| 2022-2024 | BMW | 2 Series | M240i xDrive G42 |
Why Choose Cometic?
- Three decades of gasket innovation for motorsports and street performance
- Manufactured in USA with tight tolerances for OEM-like fit
- Proven in high-horsepower B58 builds worldwide
Frequently Asked Questions
-
Q: Will this gasket fit stock bore B58TU engines?
A: No it is sized for 83mm bores only stock is typically 82mm confirm your build specs -
Q: What materials are used in construction?
A: Multi-layer 301 stainless steel with silicone rubber beading and sputter-coated fire ring for heat and pressure resistance -
Q: What is the warranty coverage?
A: Cometic provides a limited lifetime warranty against manufacturing defects when installed correctly
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Flat protective envelope 11 x 11 x 0.5 inches
- Weight: 0.35 lbs
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