Elring 026.640 Engine Valve Stem Oil Seal

Elring 026.640 Valve Stem Oil Seal

Elring 026.640 is an engine valve stem oil seal made from FPM (fluoride rubber) for controlled sealing at the valve stem. With an 11.0 mm inside diameter, 27.0 mm outside diameter, 17.8 mm thickness, and a 6 mm valve stem diameter specification, it is built for precise sealing in the valvetrain area.

This Elring valve stem oil seal is a direct-fit sealing component for select Ford Fiesta applications, including 2001 Ford Fiesta and 2003-2010 Ford Fiesta models with the listed 11 mm inner diameter and 27 mm outer diameter specification. The part number 026.640 is also referenced in OE-style interchange listings for related applications.

Key Features

• Engine valve stem oil seal for valvetrain oil control
• FPM (fluoride rubber) construction for sealing performance in engine heat and oil exposure
• 11.0 mm inside diameter and 27.0 mm outside diameter
• 17.8 mm thickness for the specified valve guide/seal stack-up
• Valve stem diameter specification: 6 mm
• Elring part number 026.640 for accurate ordering and catalog matching

Application Details

Compatible with Ford Fiesta engine sealing applications where the valve stem seal dimensions match the listed specifications. Fits 2001 Ford Fiesta, N/A. Fits 2003-2010 Ford Fiesta, N/A, with notes: Inner Diameter: 11mm; Outer Diameter: 27mm. Fits 2011 Ford Fiesta, N/A. Fits 2014 Ford Fiesta, N/A. This part number 026.640 is commonly searched for Ford Fiesta valve stem oil seal replacement and Ford Fiesta engine gasket and sealing system service.

This part cross-references OE-style numbers such as XS6E 6571AA and XS6E 6571AB for the same application.

What It Helps Address

• Oil seepage past the valve stem area
• Excessive oil consumption related to worn valve seals
• Blue exhaust smoke caused by oil entering the combustion chamber
• Valve train contamination from degraded sealing components
• Loss of sealing integrity during cylinder head service

Installation Notes

Verify valve stem diameter, seal outer diameter, and installed height before installation. Clean the valve guide and surrounding sealing surfaces thoroughly, and inspect the valve stem and guide for wear or scoring that could affect seal performance. Use proper valve spring and seal service tools to avoid damaging the FPM sealing lip during installation.

Quality Assurance

Elring is a recognized engine sealing brand, and 026.640 is manufactured to match the listed dimensional requirements for the specified Ford Fiesta applications. Confirm fitment against the vehicle year, engine configuration, and seal dimensions before ordering.