Mahle GS33453 Engine Cylinder Head Bolt Set

Mahle GS33453 Cylinder Head Bolt Set

Mahle GS33453 is an OEM-standard engine cylinder head bolt set built with steel fasteners and a round head style for secure cylinder head retention. It is a direct-fit hardware solution for select Audi and Volkswagen applications, including Audi A4, A4 Quattro, A6, A6 Quattro, S4, Allroad Quattro, and Volkswagen Passat models.

Key Features

• OEM Standard item grade for factory-style service replacement
• Steel fastener material for engine hardware applications
• Round head style with bolt fastener design
• No washers included
• Mahle GS33453 for select Audi and Volkswagen fitments

Fitment Overview

• Fits 2001-2005 Audi Allroad Quattro, N/A
• Fits 1998-2005 Volkswagen Passat, N/A
• Fits 1998-2004 Audi A6 Quattro, N/A
• Fits 2000-2002 Audi S4, N/A
• Fits 1997-2001 Audi A4, N/A
• Fits 1998-2001 Audi A4 Quattro, N/A
• Fits 1998-2001 Audi A6, N/A

Detailed Description

Mahle GS33453 is engineered as an OEM-standard cylinder head bolt set for engine service work where consistent clamping and reliable fastening are required. The steel construction and bolt-style design support proper cylinder head installation on covered Audi and Volkswagen platforms, including Audi A4, A6, S4, Allroad Quattro, and Volkswagen Passat applications. This part number, GS33453, is a practical replacement choice when servicing the engine top end on vehicles that call for Mahle-quality hardware.

This part cross-references Volkswagen (e.g., 078 103 385 K) for the same application.

Common Repair Uses

• Replacing stretched or damaged cylinder head bolts during engine repair
• Restoring proper cylinder head clamping after head gasket service
• Addressing fastener wear found during teardown on Audi A4 and A6 engines
• Supporting reassembly on Volkswagen Passat and Audi Quattro engine work
• Correcting sealing issues caused by reused or compromised head bolts

Installation Notes and Tips

Verify engine code and original hardware specifications before installation, since fitment varies by engine type within the listed Audi and Volkswagen models. Clean the threaded holes thoroughly, inspect the cylinder head and block surfaces, and follow the manufacturer service procedure for tightening sequence and torque specifications. Because this is engine hardware, accurate installation is critical to sealing performance and long-term reliability.

Quality Assurance

Mahle is known for sealing and engine service components used by OEMs and technicians worldwide. GS33453 is supplied as an OEM-standard replacement part for the listed applications and is intended to meet the demands of professional engine repair.