Kooks Header Gasket MLA - Ford Mustang GT500 5.4L/5.8L 4V

Kooks multi-layer aluminum (MLA) header gasket for the Ford 5.4L / 5.8L 4V (GT500 / Shelby). Kooks header gaskets are made of T304 aircraft-quality stainless steel and built in the USA, designed for a precise, durable seal at the header-to-head flange.

Specifications

Documents: Installation Instructions (PDF)

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy