
COMETIC Replacement MLX Head Gasket
In stock items will be shipped within 1-3 days.
You can return the products within 14 days for a full refund, check our returns policy.
We accept many payment methods

In stock items will be shipped within 1-3 days.
You can return the products within 14 days for a full refund, check our returns policy.
Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle. The 4.125" big bore is a popular choice for performance-oriented Harleys, building serious cylinder pressure while utilizing the extra sealing properties of the MLX head gaskets. The center layer is folded over on itself, simulating an O-ringed head and adding a targeted torque load right at the combustion seal where it's needed most.
MLX head gaskets are essential for all Twin Cam applications using a Turbo, high compression, nitrous, or any power adder modifications. Proprietary high-temperature coatings, along with embossments, provide a micro seal for fluids against the head and block surface. They require no special machining and are installed like a regular MLS head gasket. Sold in pairs for popular bores and thicknesses, these gaskets are made in the USA.
We ship to:
We do not ship to the Canary Islands, Ceuta, or Melilla.
Shipping costs are calculated automatically at checkout based on destination and weight.
Free shipping may be offered for qualifying orders, as specified on our website.
Orders are processed within 1–2 business days after payment confirmation. Orders placed on weekends or public holidays are processed the next business day.
If your order is delayed or arrives damaged, you must notify us within 14 calendar days. We will investigate the issue and offer a resolution in accordance with applicable consumer protection laws.
In accordance with Royal Legislative Decree 1/2007 (Ley de Defensa de los Consumidores y Usuarios), you have the right to withdraw from your purchase within 14 calendar days from the date of receipt, without giving any reason.
To exercise this right, contact us via email or through our website, providing your order number and contact details.
If you want to return an item, please contact us first to give you detailed instructions.