Mahle 55449 Engine Cylinder Head Gasket

Mahle Cylinder Head Gasket for Mazda Applications

The Mahle 55449 cylinder head gasket is an OEM-standard sealing component built for Mazda engines that require a precise, durable head-to-block seal. It is a multi-layered steel gasket with a 0.022 in. thickness and 85.00 mm bore diameter, made to support consistent combustion sealing and coolant and oil separation.

Mahle’s Cylinder Head Gasket line focuses on dependable sealing performance for engine repair work where fit, material quality, and dimensional accuracy matter. Part number 55449 follows that approach with a regular-grade, OEM-style design for select Mazda 3, Mazda 3 Sport, Mazda CX-3, and Mazda CX-5 applications.

Key Features

• Multi-layered steel construction for cylinder head sealing
• OEM standard item grade for repair and replacement use
• 0.022 in. / 0.58 mm thickness
• 85.00 mm / 3.346 in. bore diameter
• Gasket sealant included
• Designed for Mazda 3, Mazda 3 Sport, Mazda CX-3, and Mazda CX-5 engine service
• Mahle part number 55449

Detailed Description

Mahle 55449 is a cylinder head gasket engineered with multi-layered steel to provide a stable sealing surface between the cylinder head and engine block. The gasket’s 85.00 mm bore diameter and 0.022 in. thickness support the dimensional requirements of the listed Mazda engine applications, while the OEM-standard construction aligns with factory-style repair expectations. This part is a direct-fit sealing solution for select 2021-2022 Mazda 3 and Mazda 3 Sport models, plus 2019-2021 Mazda CX-3 applications, with additional coverage for earlier Mazda 3, Mazda 3 Sport, Mazda CX-3, and Mazda CX-5 vehicles. This part cross-references 26830 PT and PE01-10-271 for the same application.

What It Helps Address

• Combustion gas leakage at the cylinder head interface
• Coolant seepage between the head and block
• Engine oil cross-contamination from a failed head seal
• Compression loss caused by a worn or damaged gasket
• Repair needs after cylinder head service or engine teardown

Installation Notes and Tips

• Fits 2021-2022 Mazda 3, N/A
• Fits 2021-2022 Mazda 3 Sport, N/A
• Fits 2019-2021 Mazda CX-3, N/A
• Fits 2012-2018 Mazda 3, N/A; replacement of cylinder head bolts necessary for proper installation of multi-layered steel gasket.
• Fits 2011-2018 Mazda 3 Sport, N/A; replacement of cylinder head bolts necessary for proper installation of multi-layered steel gasket.
• Fits 2016-2018 Mazda CX-3, N/A; replacement of cylinder head bolts necessary for proper installation of multi-layered steel gasket.
• Fits 2013-2018 Mazda CX-5, N/A; replacement of cylinder head bolts necessary for proper installation of multi-layered steel gasket.

Verify engine code, bore size, and gasket thickness before installation. Clean all mating surfaces thoroughly and follow the manufacturer’s torque sequence and tightening specifications. For the listed multi-layered steel applications, replace cylinder head bolts as noted to support proper clamping force.

Quality Assurance

Mahle is known for sealing products used by OEMs and professional technicians worldwide. Part number 55449 is built to OEM-standard expectations for material quality, fitment accuracy, and engine sealing performance.