Elring 851.780 Engine Cylinder Head Bolt Set

Elring Cylinder Head Bolt Set 851.780

Elring 851.780 is an engine cylinder head bolt set built for Honda and Acura applications that require a male star head design and M 11x1.5x156 thread specification. This engine hardware is used in a wide range of Honda CR-V, Accord, Civic, and Element models, as well as Acura RDX, CSX, TSX, and RSX applications.

Key Features

• Engine cylinder head bolt set for head fastening service
• Male star bolt head/nut design for the specified application
• Thread size: M 11x1.5x156
• Engine hardware engineered for Honda and Acura fitments
• Elring part number 851.780 for catalog matching and service lookup

Application Details

Use Elring 851.780 when servicing cylinder head fastening on supported Honda and Acura engines. This part number 851.780 is listed for 2001-2017 Honda CR-V, 2003-2015 Honda Accord, 2002-2011 Honda Civic, 2003-2011 Honda Element, 2007-2012 Acura RDX, 2006-2011 Acura CSX, 2004-2008 Acura TSX, and 2002-2006 Acura RSX. This part cross-references 90005-PNA-003 and HBS528 for the same application.

What It Helps Address

• Loose or damaged cylinder head fasteners during engine repair
• Head gasket service that requires replacement head bolts
• Incorrect thread size or head design during reassembly
• Restoration of proper cylinder head clamping in supported Honda and Acura engines

Installation Notes and Tips

Verify engine code, thread specification, and bolt head style before installation. Follow the vehicle service manual for tightening sequence, torque stages, and any angle-tightening procedure required for the engine. Clean threaded holes and mating surfaces before assembly, and replace any fasteners that show stretching, corrosion, or thread damage.

Quality Assurance

Elring is a recognized engine sealing and hardware brand used in professional repair environments. Part number 851.780 is cataloged for direct application matching across the listed Honda and Acura vehicles, including Honda Civic, Honda CR-V, and Acura TSX service needs.