Mahle 55403 Engine Cylinder Head Gasket

Engine Cylinder Head Gasket Overview

Mahle 55403 is an OEM-standard engine cylinder head gasket built for sealing performance in Ford and Lincoln applications. It uses multi-layered steel construction with a 0.018-inch thickness and a 3.50-inch bore diameter for a precise sealing interface.

Compatible with Ford Fusion, Ford Police Responder Hybrid, Ford SSV Plug-In Hybrid, Ford C-Max, and Lincoln MKZ applications, this gasket is specified for engine sealing service where cylinder head sealing integrity is critical. Part number 55403 is also referenced by Ford interchange numbers DS7E-6051-AB and DS7Z-6051-A for the same application.

Key Features

• Multi-layered steel construction for durable cylinder head sealing
• OEM-standard grade for service replacement applications
• 0.018-inch gasket thickness for the listed engine fitment
• 3.50-inch bore diameter to match the specified cylinder layout
• Contains the cylinder head gasket as the primary package content

Detailed Description

Mahle 55403 is an engine cylinder head gasket engineered around the sealing requirements of the listed Ford Fusion, Ford C-Max, Ford Police Responder Hybrid, Ford SSV Plug-In Hybrid, and Lincoln MKZ applications. The multi-layered steel design helps maintain a consistent seal at the cylinder head interface, while the OEM-standard grade supports service work that follows original equipment specifications. The 0.018-inch thickness and 3.50-inch bore diameter are key dimensions for matching the engine configuration called out in the fitment data. Part number 55403 is a direct reference for buyers searching for a Mahle cylinder head gasket for these vehicles.

What It Is Used For

• Replacing a leaking or failed cylinder head gasket
• Restoring compression sealing between the cylinder head and engine block
• Addressing coolant or combustion sealing loss at the head interface
• Supporting repair after cylinder head service on the listed engines

Installation Notes and Tips

Fitment notes specify that replacement of cylinder head bolts is necessary for proper installation of the multi-layered steel gasket. Confirm engine application, bore diameter, and thickness before installation. Follow the service procedure for the specific Ford or Lincoln model and inspect mating surfaces carefully before assembly.

Quality Assurance

Mahle gaskets are trusted by OEMs and technicians worldwide for sealing applications. Part number 55403 is built to OEM-standard expectations for the listed fitments, and the Ford cross-reference numbers DS7E-6051-AB and DS7Z-6051-A identify the same application.