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Product Information

Cometic builds this head gasket for the right-side (RHS) cylinder head on 2011-2012 Ford Mustang GT500s running the 4.6L/5.4L engine family. It's cut to a 92mm bore and .032in compressed thickness in Cometic's MLX construction, sealing the head to the block where combustion pressure, coolant and oil all meet. This is the gasket for one side of the engine, sized specifically for this application.

Why Upgrade to the Cometic MLX Head Gasket

Per Cometic, here's what the MLX construction brings to this gasket:

  • An integrated stopper layer built into the gasket, there specifically for combustion chamber sealing.
  • Machined to a 92mm bore and .032in compressed thickness for this specific GT500 application, not a generic universal-fit gasket.
  • Cut for the right-side (RHS) cylinder head, matched to that bank rather than sold as a one-size-fits-all gasket.

Fitment Notes

This gasket is built for the 2011-2012 Ford Mustang GT500, matched to the RHS cylinder head at a 92mm bore and .032in compressed thickness. Does not fit Mustang Boss 302, GT, or V6.

More Gaskets parts that fit your Mustang

Install and Honest Talk

Sealing the head to the block is the entire job here: this gasket sits between the cylinder head and the block, holding compression, coolant and oil where the two surfaces meet. Getting it in means the head has to come off the engine first, so budget for real engine work, not a quick swap.

The real tradeoff is precision: this is a single-application gasket, right side only, cut to a 92mm bore and .032in thickness for the GT500's 5.4L. It is not a generic head gasket you can reach for on a different bore or the other side, so confirm you are matching it to the exact head you are working on before you order. What else you need: [VERIFY: head bolts, torque specs, whether a matching LHS gasket and other gasket-set components are required, and what is actually in the box.]

Specs

  • Brand: Cometic Gasket
  • Part number: [VERIFY: part number]
  • Part type: Head Gaskets
  • Construction: MLX
  • Engine: 4.6L/5.4L
  • Side: RHS
  • Bore: 92mm
  • Compressed thickness: .032 in
  • Quantity: [VERIFY: quantity]
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