Cometic BMW B58/B58H Cylinder Head Gasket

Cometic B58 Head gasket a high-performance Multi-Layer Xtreme (MLX) Cylinder Head Gasketmanufactured by Cometic Gasket, primarily designed for the Toyota BMW B58/B58H engine found in the 2020+ Toyota GR Supra and various BMW models.

Key Specifications

· Engine Compatibility: Toyota BMW B58/B58H (3.0L Turbo Inline-6).

· Bore Size: 83mm.

· Compressed Thickness: 0.036 inches (0.914 mm).

· Material: Multi-Layer Xtreme (MLX) / Stainless Steel.

· Number of Layers: 3.

Performance Features

· MLX Technology: Features an integrated "stopper" fold-over layer that provides a torque-limiting surface to prevent the yielding of combustion seals.

· Superior Sealing: Embossed outer layers are coated on both sides with Viton (a heat-resistant fluoroelastomer), providing a micro-seal for fluids against the cylinder head and block surfaces up to 482°F (250°C).

· Durability: The multi-layer stainless steel construction is designed for high-output engines, offering excellent rebound and resistance to corrosion.

· Versatility: Ideal for sealing both aluminum-to-aluminum and aluminum-to-cast iron interfaces, effectively handling the shearing forces created by different materials.

Common Applications

· 2020–2025 Toyota GR Supra (A90/A91).

· BMW B58 M240/340/440