Cometic MLX Head Gasket 4.150in Bore .040in Thick — Fits 6.4L Hemi

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SKU: CGSC15173-040
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Cometic Gasket

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.

Watch in action

Cometic MLX Performance Head Gasket for 6.4L Hemi

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.

Technical Specifications:

  • Engine Compatibility: 6.4L Apache Gen-3 Hemi
  • Bore Size: 4.150 inches
  • Thickness: .040 inches
  • Construction: MLX Multi-Layer Steel with stopper fold
  • Position: Left Hand Side (LHS)

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.

Vehicle Fitment

Years Make Model Trim
2012-2014 Chrysler 300 SRT8
2013 Chrysler 300 SRT8 Core
2011-2014 Dodge Challenger SRT8
2015 Dodge Challenger Scat Pack
2016 Dodge Challenger 392 Hemi Scat Pack Shaker
2016 Dodge Challenger R/T Scat Pack
2017-2018 Dodge Challenger T/A 392
2017-2018 Dodge Challenger R/T 392
2019 Dodge Challenger R/T Scat Pack
2015-2016 Dodge Charger R/T Scat Pack
2015-2018 Dodge Charger SRT 392
2017-2018 Dodge Charger Daytona 392
2017-2018 Dodge Charger 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 Lone Star
2014-2015 Ram 2500 Laramie Limited
2014-2016 Ram 2500 Outdoorsman
2014-2018 Ram 2500 SLT
2014-2019 Ram 2500 Power Wagon
2014-2019 Ram 2500 Tradesman
2014-2019 Ram 2500 Big Horn
2014-2019 Ram 2500 Laramie
2014-2019 Ram 2500 Laramie Longhorn
2019 Ram 2500 Lone Star
2014-2015 Ram 3500 Lone Star
2014-2019 Ram 3500 Big Horn
2014-2019 Ram 3500 Laramie
2014-2019 Ram 3500 SLT
2014-2019 Ram 3500 Tradesman
2016-2019 Ram 3500 Limited
2017 Ram 3500 Lone Star
2019 Ram 3500 Lone Star

Product Details

Product Description
Part Numbers
Sizing & Fit

About Cometic Gasket

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.

Watch in action

Cometic MLX Performance Head Gasket for 6.4L Hemi

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.

Technical Specifications:

  • Engine Compatibility: 6.4L Apache Gen-3 Hemi
  • Bore Size: 4.150 inches
  • Thickness: .040 inches
  • Construction: MLX Multi-Layer Steel with stopper fold
  • Position: Left Hand Side (LHS)

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.

Vehicle Fitment

Years Make Model Trim
2012-2014 Chrysler 300 SRT8
2013 Chrysler 300 SRT8 Core
2011-2014 Dodge Challenger SRT8
2015 Dodge Challenger Scat Pack
2016 Dodge Challenger 392 Hemi Scat Pack Shaker
2016 Dodge Challenger R/T Scat Pack
2017-2018 Dodge Challenger T/A 392
2017-2018 Dodge Challenger R/T 392
2019 Dodge Challenger R/T Scat Pack
2015-2016 Dodge Charger R/T Scat Pack
2015-2018 Dodge Charger SRT 392
2017-2018 Dodge Charger Daytona 392
2017-2018 Dodge Charger 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 Lone Star
2014-2015 Ram 2500 Laramie Limited
2014-2016 Ram 2500 Outdoorsman
2014-2018 Ram 2500 SLT
2014-2019 Ram 2500 Power Wagon
2014-2019 Ram 2500 Tradesman
2014-2019 Ram 2500 Big Horn
2014-2019 Ram 2500 Laramie
2014-2019 Ram 2500 Laramie Longhorn
2019 Ram 2500 Lone Star
2014-2015 Ram 3500 Lone Star
2014-2019 Ram 3500 Big Horn
2014-2019 Ram 3500 Laramie
2014-2019 Ram 3500 SLT
2014-2019 Ram 3500 Tradesman
2016-2019 Ram 3500 Limited
2017 Ram 3500 Lone Star
2019 Ram 3500 Lone Star

Product Details

Product Description

About Cometic Gasket

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.

Watch in action

Cometic MLX Performance Head Gasket for 6.4L Hemi

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.

Technical Specifications:

  • Engine Compatibility: 6.4L Apache Gen-3 Hemi
  • Bore Size: 4.150 inches
  • Thickness: .040 inches
  • Construction: MLX Multi-Layer Steel with stopper fold
  • Position: Left Hand Side (LHS)

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.

Vehicle Fitment

Years Make Model Trim
2012-2014 Chrysler 300 SRT8
2013 Chrysler 300 SRT8 Core
2011-2014 Dodge Challenger SRT8
2015 Dodge Challenger Scat Pack
2016 Dodge Challenger 392 Hemi Scat Pack Shaker
2016 Dodge Challenger R/T Scat Pack
2017-2018 Dodge Challenger T/A 392
2017-2018 Dodge Challenger R/T 392
2019 Dodge Challenger R/T Scat Pack
2015-2016 Dodge Charger R/T Scat Pack
2015-2018 Dodge Charger SRT 392
2017-2018 Dodge Charger Daytona 392
2017-2018 Dodge Charger 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 Lone Star
2014-2015 Ram 2500 Laramie Limited
2014-2016 Ram 2500 Outdoorsman
2014-2018 Ram 2500 SLT
2014-2019 Ram 2500 Power Wagon
2014-2019 Ram 2500 Tradesman
2014-2019 Ram 2500 Big Horn
2014-2019 Ram 2500 Laramie
2014-2019 Ram 2500 Laramie Longhorn
2019 Ram 2500 Lone Star
2014-2015 Ram 3500 Lone Star
2014-2019 Ram 3500 Big Horn
2014-2019 Ram 3500 Laramie
2014-2019 Ram 3500 SLT
2014-2019 Ram 3500 Tradesman
2016-2019 Ram 3500 Limited
2017 Ram 3500 Lone Star
2019 Ram 3500 Lone Star

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