Cometic BMW S58B30T0 MLX Cylinder Head Gasket

Cometic BMW S58B30T0 MLX Cylinder Head Gasket is a high-performance multi-layer sealing solution for 2020-on BMW S58 applications.

Specifications

• 85 mm round bore
• MLX multi-layer stainless-steel construction
• .036 in compressed thickness: C15696-036, four layers
• .055 in compressed thickness: C15696-055, five layers
• OEM reference: BMW 11-12-8-088-729

Design

Cometic's MLX architecture uses an integrated stopper layer around the combustion chamber to concentrate clamp load, while coated embossed outer layers provide the fluid micro-seal required by high-cylinder-pressure engines.

Fitment

BMW S58B30T0 applications including G87 M2, G80/G81 M3, G82/G83 M4 and F97/F98 X3 M/X4 M. Confirm engine version, bore and required compressed thickness before ordering.

Installation and supply

Professional engine assembly is required. Verify deck finish, fastener specification, piston-to-head clearance and final compression ratio. Cometic lists these parts as manufactured to order with an indicative 2–4 week manufacturer delivery window; Australian supply timing may vary.

Built by Boost & Tune can assist with S58 engine-build planning, supporting hardware and installation.

Supplier

Cometic

Product System

• Engine Parts

Vehicle Fitment

• BMW M2 G87 S58
• BMW M3 G80 G81 S58
• BMW M3 G80 S58
• BMW M3 Touring G81 S58
• BMW M4 Convertible G83 S58
• BMW M4 G82 G83 S58
• BMW M4 G82 S58
• BMW X3 M F97 S58
• BMW X4 M F98 S58

Confirm chassis, engine, drivetrain and production-year compatibility before ordering.

Available Options

Thickness

• .036"
• .055"

Supplier Part Numbers

C15696-036, C15696-055

Built by Boost & Tune Support

BBT can assist with fitment review, installation, supporting modifications, configuration and calibration requirements where applicable.