Elring 474.990 Engine Cylinder Head Bolt Set

Elring Cylinder Head Bolt Set for Porsche

Elring 474.990 is an engine cylinder head bolt set built for Porsche applications that require a female Torx head, M11 x 1.5 thread, and 140 mm length. It is a direct-fit hardware solution for Porsche Cayenne and Porsche Panamera engine service work where cylinder head fastener replacement is specified.

Key Features

• Engine cylinder head bolt set from Elring
• Female Torx bolt head/nut design for secure tool engagement
• M11 x 1.5 thread size with 140 mm length
• Application-specific hardware for Porsche engine assembly service
• Elring 474.990 for Porsche Cayenne and Porsche Panamera fitments

Detailed Description

Elring 474.990 is engineered for Porsche engine hardware applications that call for precise cylinder head bolt dimensions and a female Torx drive. The specified M11 x 1.5 thread and 140 mm length make this part relevant for Porsche Cayenne and Porsche Panamera service procedures where correct fastener geometry is critical. If you are sourcing a Porsche Cayenne cylinder head bolt set or a Porsche Panamera engine head bolt replacement, this Elring part number provides the required fitment details in one OE-style hardware solution. This part cross-references Porsche 948 104 181 10 for the same application.

Vehicle Fitment

• Fits 2019 Porsche Cayenne, N/A
• Fits 2010 Porsche Cayenne, N/A
• Fits 2011-2018 Porsche Cayenne, N/A; Length: 140mm; Thread Size: M11; Thread Pitch: 1.5mm; Bolt Head Nut Design: Female Torx
• Fits 2010-2016 Porsche Panamera, N/A; Length: 140mm; Thread Size: M11; Thread Pitch: 1.5mm; Bolt Head Nut Design: Female Torx

What This Part Helps Address

• Replacement of stretched or torque-to-yield cylinder head bolts during engine service
• Restoration of proper cylinder head clamping force after head gasket repair
• Correction of fastener wear, corrosion, or thread damage in engine hardware service
• Support for Porsche Cayenne and Porsche Panamera cylinder head reassembly

Installation Notes and Tips

Verify thread size, pitch, length, and drive type before installation. Clean the threaded holes and mating surfaces, and follow the vehicle service manual for tightening sequence and torque specifications. Cylinder head fasteners are critical engine hardware; use the exact application match for the Porsche Cayenne or Porsche Panamera listed above.

Quality Assurance

Elring is a recognized engine sealing and hardware brand used in professional repair environments. Part number 474.990 is specified with the correct drive style and dimensions for the listed Porsche applications, supporting accurate engine reassembly.