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Cometic Gasket is the world leader in custom multi-layer steel head gaskets for performance and motorsport engines. From off-the-shelf MLS for popular platforms to bespoke gaskets for race-only builds, Cometic seals everything from Honda B-series to LSX.
The Cometic MLX-5 head gasket is engineered to provide the ultimate sealing solution for the Chrysler 6.4L Hemi engine. Featuring a 4.150-inch bore and a .050-inch thickness, this gasket incorporates a stainless steel stopper layer that provides a robust combustion seal, even under extreme cylinder pressures. Cometic’s MLX technology is specifically designed for high-horsepower builds where traditional gaskets fail.
When building a high-performance Hemi, the head gasket is the most critical component for long-term engine health. The MLX-5 design ensures that your cylinder heads remain securely fastened to the block, preventing head lift and coolant contamination. This gasket is an essential upgrade for forced induction or high-compression naturally aspirated builds. Its precision fitment ensures easy installation, while the high-quality materials guarantee that your engine remains sealed through every gear shift. Experience the difference of professional-grade engine sealing components available here at GGCRACING.
| Brand | Cometic Gasket |
|---|---|
| Manufacturer part number | H4230050S |
| GGC SKU | CGSH4230050S |
| UPC / GTIN | 191070061357 |
Use the manufacturer part number when you compare with other listings or ask us to confirm a match.
| Box size | 24 × 9.8 × 0.25 in |
|---|---|
| Shipping weight | 1 lb |
Universal fit — check measurements. Compare the dimensions and specifications on this page with your application before you order.
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