Elring 818.445 Engine Oil Pressure Relief Valve Gasket

Engine Oil Pressure Relief Valve Gasket for OE Sealing

Elring 818.445 is an engine oil pressure relief valve gasket/O-ring made for reliable sealing in demanding engine applications. Built from FPM (fluoride rubber), it measures 21 mm inner diameter, 25.8 mm outer diameter, and 2.4 mm thickness for a precise fit in the oil pressure relief valve sealing area.

This Elring 818.445 gasket is used in a wide range of Chevrolet Silverado 2500 HD and GMC Sierra 3500 applications, along with select BMW X5 and Land Rover Range Rover models. It is a direct-fit sealing component for engines that require stable oil control and leak resistance.

Key Features

• Part number: 818.445
• Engine oil pressure relief valve gasket / O-ring
• FPM (fluoride rubber) construction for oil-sealing applications
• Inner diameter: 21 mm
• Outer diameter: 25.8 mm
• Thickness: 2.4 mm
• Shape: O-ring
• Cross-reference part numbers: 94005874, 94011695

Detailed Description

Elring 818.445 is a precision sealing ring for the engine oil pressure relief valve. Its FPM material is selected for use in oil-exposed environments, while the specified dimensions help maintain a consistent seal where pressure regulation and oil retention matter. For buyers searching for an Elring 818.445 oil pressure relief valve gasket, this part supports proper sealing in engines that rely on a correctly sized O-ring to control leaks at the relief valve assembly.

Compatible With 2001-2016 Chevrolet Silverado 2500 HD, 2007-2016 Chevrolet Silverado 3500 HD, 2006-2016 Chevrolet Express 2500, 2006-2016 Chevrolet Express 3500, 2001-2016 GMC Sierra 2500 HD, 2007-2016 GMC Sierra 3500 HD, 2006-2016 GMC Savana 2500, 2006-2016 GMC Savana 3500, 2003-2005 Land Rover Range Rover, and 2000-2003 BMW X5. This part also cross-references 94005874 and 94011695 for the same application.

What It Helps Address

• Oil seepage at the pressure relief valve
• Loss of sealing from a flattened or hardened O-ring
• Pressure control issues caused by a worn valve gasket
• Maintenance replacement during engine sealing service
• Leak repair on Chevrolet Silverado 2500 HD, GMC Sierra 3500, BMW X5, and Range Rover applications

Installation Notes and Tips

Confirm the valve bore dimensions and compare the old seal to the listed 21 mm inner diameter, 25.8 mm outer diameter, and 2.4 mm thickness before installation. Clean the sealing surfaces thoroughly and inspect the relief valve housing for wear, scoring, or debris that could affect the seal. Use the part number 818.445 to verify the correct Elring gasket before assembly.

Quality Assurance

Elring supplies engine sealing components for applications that require accurate fit and dependable oil sealing. This gasket is manufactured to the stated dimensions and material specification to support consistent sealing performance in the listed vehicle applications.