Mahle 54521 Engine Cylinder Head Gasket

Mahle 54521 Cylinder Head Gasket

The Mahle 54521 engine cylinder head gasket is an OEM-standard sealing solution built with multi-layered steel construction for precise combustion sealing. It is a direct-fit option for select Acura RSX and Honda Civic applications, including 2002-2006 Acura RSX and 2002-2005 Honda Civic.

Key Features

• Multi-layered steel cylinder head gasket for durable sealing performance
• OEM-standard item grade for service and replacement use
• 0.03 in. / 0.64 mm thickness
• 3.43 in. / 87.00 mm cylinder bore diameter
• Torque-to-yield fastener application
• Head gasket only; sealant not included

Detailed Description

Mahle 54521 is a multi-layered steel engine cylinder head gasket engineered for accurate sealing between the cylinder head and engine block. The gasket’s 0.03-inch thickness and 87.00 mm bore diameter support proper combustion chamber sealing in the specified Acura RSX and Honda Civic engine applications. Mahle gaskets are used by OEMs and technicians worldwide for sealing performance that meets standard replacement requirements. This part number, 54521, is also referenced in OE and aftermarket catalogs for the same application.

This part cross-references Acura 12251-PRB-A01 for the same application.

What It Helps Address

• Coolant leakage at the cylinder head sealing surface
• Compression loss between the head and block
• Combustion gas seepage into the cooling system
• Oil and coolant mixing caused by head gasket failure
• Overheating related to compromised head sealing

Installation Notes and Tips

Fits 2002-2006 Acura RSX and 2002-2005 Honda Civic. Replacement of cylinder head bolts is necessary for proper installation of the multi-layered steel gasket. Verify engine code, bore size, and surface condition before installation. Clean and inspect the cylinder head and block mating surfaces carefully to support proper sealing. Use the correct torque sequence and torque-to-yield procedure specified for the application.

Quality Assurance

Mahle supplies sealing products built to OEM-standard requirements and trusted across global repair and replacement markets. The 54521 head gasket is manufactured as a precision sealing component for professional engine service.