Mahle 4863 Engine Cylinder Head Gasket

Mahle 4863 Cylinder Head Gasket Overview

The Mahle 4863 engine cylinder head gasket is an OEM-standard composite gasket built for reliable sealing in select BMW inline-six applications. It is specified with a 1.80 mm thickness and a 93.38 mm cylinder bore diameter, making it a direct-fit service part for the listed vehicles.

Mahle gaskets are trusted by OEMs and technicians for consistent sealing performance, and this Mahle 4863 head gasket follows that same OE-style approach for BMW 535i, 735i, 735iL, 635CSi, and 535is applications.

Key Features

• Composite cylinder head gasket material for OEM-standard sealing
• 1.80 mm thickness for the specified engine application
• 93.38 mm cylinder bore diameter
• No gasket sealant included
• Torque-to-yield fastener application
• Includes head gasket only

Detailed Product Description

Built for engine sealing service, the Mahle 4863 cylinder head gasket is designed to maintain combustion chamber integrity and help preserve proper compression across the cylinder head and block interface. The composite construction supports the sealing demands of older BMW engines while matching the dimensional requirements listed for this part. If you are replacing a worn or failed head gasket on a BMW 535i or 735i, this Mahle 4863 part number provides an OE-standard replacement option.

This part cross-references BMW 11 12 1 278 306 and FEL-PRO 26580PT for the same application.

What This Part Helps Address

• Coolant loss from a failed cylinder head seal
• Compression leakage between the head and block
• Combustion gas leakage into the cooling system
• Overheating caused by head gasket failure
• Rough running from compromised sealing at the cylinder head

Installation Notes and Tips

• Fits 1985-1993 BMW 535i, N/A.
• Fits 1985-1992 BMW 735i, N/A.
• Fits 1988-1992 BMW 735iL, N/A.
• Fits 1985-1989 BMW 635CSi, N/A.
• Fits 1988 BMW 535is, N/A.
• Replace cylinder head bolts when using a composite engine cylinder head gasket.
• Verify cylinder head and block surfaces are clean, flat, and free of old gasket material before installation.
• Follow the vehicle-specific torque sequence and torque-to-yield procedure during assembly.

Quality Assurance

Mahle supplies sealing products used by OEMs and professional technicians worldwide, and the 4863 head gasket is built to OEM-standard specifications for dependable service in the listed BMW applications. Confirm engine code, bore size, and gasket thickness before installation.