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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.
Optimize your engine's combustion efficiency with the Cometic MLX (Multi-Layer Exclusive) cylinder head gasket, precision-engineered for the Chrysler 6.4L Apache Gen-3 Hemi. With a 4.150-inch bore and a .040-inch thickness, this gasket is designed to slightly increase compression, providing a tighter quench area for improved power delivery. The MLX design incorporates a stainless steel outer layer with an integrated stopper fold, creating a robust seal that holds up under the high-stress environments of performance driving.
This gasket is an essential upgrade for builders looking to maximize the potential of their 6.4L Hemi. It is compatible with a variety of platforms, including the Dodge Challenger 392, Charger SRT, and Jeep Grand Cherokee SRT. By choosing the .040-inch thickness, you can fine-tune your deck height and compression ratio for specific performance goals. Cometic's reputation for quality ensures that your engine remains sealed under the most demanding conditions, preventing common head gasket failures associated with increased boost or high-RPM operation. Ensure your engine build is reliable and powerful by choosing the best components from GGCRACING.
| Brand | Cometic Gasket |
|---|---|
| Manufacturer part number | C15173-040 |
| GGC SKU | CGSC15173-040 |
| UPC / GTIN | 191070099367 |
Use the manufacturer part number when you compare with other listings or ask us to confirm a match.
| Box size | 24 × 9.7 × 0.13 in |
|---|---|
| Shipping weight | 0.8 lb |
| Year | Make | Model | Trim |
|---|---|---|---|
| 2012-2014 | Chrysler | 300 | SRT8 |
| 2013 | Chrysler | 300 | SRT8 Core |
| 2011-2014 | Dodge | Challenger | SRT8 |
| 2015 | Dodge | Challenger | Scat Pack |
| 2015-2018 | Dodge | Challenger | SRT 392 |
| 2016 | Dodge | Challenger | 392 Hemi Scat Pack Shaker |
| 2016-2019 | Dodge | Challenger | R/T Scat Pack |
| 2017-2018 | Dodge | Challenger | T/A 392 |
| 2017-2019 | Dodge | Challenger | R/T 392 |
| 2019 | Dodge | Challenger | R/T Scat Pack Widebody |
| 2012-2014 | Dodge | Charger | SRT8 |
| 2015-2018 | Dodge | Charger | R/T Scat Pack, SRT 392 |
| 2017-2018 | Dodge | Charger | Daytona 392, R/T 392 |
| 2019 | Dodge | Charger | Scat Pack |
| 2018-2019 | Dodge | Durango | SRT |
| 2012-2013 | Jeep | Grand Cherokee | SRT8 |
| 2014-2019 | Jeep | Grand Cherokee | SRT |
| 2014-2015 | Ram | 2500 | Laramie Limited, Lone Star |
| 2014-2016 | Ram | 2500 | Outdoorsman |
| 2014-2018 | Ram | 2500 | SLT |
| 2014-2019 | Ram | 2500 | Laramie Longhorn, Power Wagon, Tradesman, Big Horn, Laramie |
| 2016-2019 | Ram | 2500 | Limited |
| 2019 | Ram | 2500 | Lone Star |
| 2014-2015 | Ram | 3500 | Lone Star |
| 2014-2019 | Ram | 3500 | Big Horn, Laramie, Laramie Longhorn, SLT, Tradesman |
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