Elring 429.123 Engine Cylinder Head Gasket

Engine Cylinder Head Gasket Overview

Elring 429.123 is an engine cylinder head gasket built for heavy-duty GM truck applications. It uses a multilayer steel (MLS) design and is listed as Grade A for repair-stage service.

Key Features

• Multilayer steel (MLS) construction for cylinder head sealing.
• Grade A repair-stage specification.
• Engine sealing component for high-load truck applications.
• Compatible with Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, and GMC Sierra 3500 HD applications.

Detailed Description

This Elring head gasket is engineered for engine rebuild and repair work where reliable combustion sealing and coolant separation are critical. The MLS gasket design uses layered steel construction to handle the demands of modern truck engines, while the Grade A designation identifies it as a service-grade sealing component for repair applications. Part number 429.123 is a direct reference for ordering and catalog matching, and 429.123 also cross-references GM 12676857 for the same application.

Fitment includes 2016-2021 Chevrolet Silverado 2500 HD, 2016-2021 Chevrolet Silverado 3500 HD, 2017-2021 GMC Sierra 2500 HD, 2017-2021 GMC Sierra 3500 HD, and 2023 Chevrolet Silverado 2500 HD and GMC Sierra 3500 HD applications. Use this gasket when servicing GM heavy-duty trucks that require an MLS cylinder head sealing solution.

What It Is Used For

• Restoring cylinder head sealing after engine teardown.
• Addressing combustion leakage between the head and block.
• Replacing a worn or damaged head gasket during repair.
• Supporting coolant and oil separation at the head interface.

Installation Notes and Tips

Confirm engine code, head surface condition, and gasket orientation before installation. Clean mating surfaces thoroughly and follow the manufacturer’s torque sequence and tightening specifications for the engine being serviced. Verify fitment against the vehicle application and part number 429.123 before assembly.

Quality Assurance

Elring supplies sealing components for engine repair applications, and this gasket is identified as a Grade A service part. Verify all dimensions and application details during parts selection to ensure correct installation.