Mahle HS5978A Engine Cylinder Head Gasket Set

Engine Cylinder Head Gasket Set Overview

Mahle HS5978A is an OEM-standard engine cylinder head gasket set built for sealing service on select Chrysler, Dodge, and Plymouth applications. It combines graphite cylinder head gasket material with composite exhaust manifold sealing and molded rubber intake manifold sealing for a service-ready fit.

Fits 1999-2002 Chrysler 300M, N/A. Fits 1998-2002 Chrysler Concorde, N/A. Fits 1998-2002 Chrysler Intrepid, N/A. Fits 2001-2002 Chrysler Prowler, N/A. Fits 1998-2002 Dodge Intrepid, N/A. Fits 1999-2001 Chrysler LHS, N/A. Fits 1999-2001 Plymouth Prowler, N/A.

Key Features

• OEM-standard gasket set for engine sealing service
• Graphite cylinder head gasket material for dependable sealing performance
• Composite exhaust manifold gasket material
• Molded rubber intake manifold gasket material
• Includes miscellaneous gaskets and seals for related sealing points
• Torque-to-yield application noted in the fitment data

Detailed Description

Mahle HS5978A is a cylinder head gasket set for engines that require coordinated sealing across the head, intake, and exhaust interfaces. The set is built around an OEM-standard specification and uses material choices suited to each sealing surface: graphite for the head gasket, composite for the exhaust manifold gasket, and molded rubber for the intake manifold gasket. Mahle HS5978A is listed for Chrysler 300M, Concorde, Intrepid, LHS, and Prowler, plus Dodge Intrepid and Plymouth Prowler applications in the model years shown.

This part cross-references FEL-PRO (e.g., HS 9505 PT) for the same application.

What It Is Used For

• Replacing a leaking cylinder head gasket
• Restoring intake manifold sealing integrity
• Addressing exhaust manifold sealing leaks
• Servicing multiple engine sealing points during top-end repair
• Supporting repairs where torque-to-yield fastener procedures apply

Installation Notes and Tips

Confirm engine code and gasket layout before installation. The fitment notes indicate cylinder head bolts are not included and replacement is recommended. Follow the manufacturer’s torque sequence and torque-to-yield procedure exactly, and inspect mating surfaces for warpage, corrosion, or residue before assembly. Mahle HS5978A should be installed only on the listed Chrysler, Dodge, and Plymouth applications.

Quality Assurance

MAHLE gaskets are trusted by OEMs and technicians worldwide for engine sealing applications. HS5978A is built to OEM-standard expectations for fit and sealing performance.