Honda K-Series Valve Cover Washer
Part Number: 90441-PNA-010

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Product Details

The Honda OEM Valve Cover Washer with Gasket is a genuine factory replacement designed to secure and seal the cylinder head cover on compatible Honda and Acura K-series engines. This essential engine component combines a mounting washer with a sealing grommet to help maintain proper valve cover fastening while preventing oil from escaping around the mounting bolts.

Commonly used on popular K20 and K24 engine applications, including the 2002–2006 Acura RSX, 2002–2005 Honda Civic Si, 2003–2011 Honda Accord, and 2002–2012 Honda CR-V, this genuine Honda valve cover washer is an excellent replacement for worn, hardened, cracked, or leaking original hardware.

The valve cover helps contain engine oil within the cylinder head while protecting the valvetrain from outside contaminants. Its mounting washers and grommets play an important role in maintaining the correct clamping arrangement and sealing the areas surrounding the valve cover bolts.

Over time, the original rubber sealing material can deteriorate from engine heat, oil exposure, and repeated maintenance. Worn valve cover washers may contribute to oil seepage around the mounting bolts, even when the main valve cover gasket is in good condition.

Whether you're replacing a leaking valve cover gasket, rebuilding a K20/K24 engine, installing an aftermarket valve cover, or refreshing your engine's original hardware, this genuine Honda OEM Valve Cover Washer with Gasket provides factory-quality construction and dependable sealing performance.

Features

Genuine Honda OEM Part: Authentic factory replacement manufactured to Honda's original equipment specifications.
Valve Cover Washer with Gasket: Combines a mounting washer and sealing grommet in one factory-style component.
Cylinder Head Cover Application: Designed for compatible Honda and Acura valve cover mounting assemblies.
Helps Prevent Oil Leaks: Provides a sealing surface around the valve cover mounting bolt.
Direct OEM Replacement: Replaces the original valve cover washer on compatible engines.
Factory Fit and Design: Maintains the original Honda mounting and sealing configuration.
Durable Construction: Designed for normal engine operating temperatures and oil exposure.
K-Series Engine Compatibility: Used on numerous Honda and Acura K20/K24 engine applications.
Ideal for Valve Cover Gasket Replacement: Excellent for replacing deteriorated mounting grommets during valve cover service.
Engine Rebuild Friendly: Suitable for compatible K-series engine rebuilding and restoration projects.
Sold Individually: Convenient for replacing one damaged or leaking washer.
OEM Part Number: 90441-PNA-010.

Additional Information

Manufacturer: Honda / Acura
Part Number: 90441-PNA-010
OEM Description: Washer, Head Cover
Other Names: Valve Cover Washer / Valve Cover Grommet / Cylinder Head Cover Washer / Valve Cover Bolt Seal / Valve Cover Bolt Gasket
Product Type: Engine Sealing Hardware
Installation Location: Cylinder Head Cover / Valve Cover Mounting Bolts
Application: Valve Cover Mounting and Sealing
Construction: Washer with Integrated Sealing Grommet
Quantity: Sold Individually (1 Washer with Gasket)
Required Quantity: 6 on Applicable K-Series Valve Cover Configurations

Common Reasons for Replacement

Valve cover washers and grommets should be inspected whenever the cylinder head cover is removed for maintenance.

Oil leaking around valve cover mounting bolts
Hardened or deteriorated rubber grommets
Cracked or damaged sealing material
Flattened or compressed original seals
Missing factory valve cover washers
Valve cover gasket replacement
Spark plug tube seal replacement
Cylinder head maintenance
Engine rebuilding or restoration
Aftermarket valve cover installation
Replacing worn valve cover washers helps restore the original sealing arrangement and reduces the likelihood of oil seepage around the mounting bolts.

Installation Notes

Proper valve cover washer installation is important for maintaining a reliable seal and preventing damage to the cylinder head cover.
Before installation, remove the valve cover mounting bolts and inspect the original washers and grommets for deterioration, cracking, or excessive compression.
Clean the mounting surfaces and remove any accumulated oil, debris, or damaged sealing material.
Confirm that the replacement Honda OEM washer matches the original component and is compatible with your valve cover configuration.
Install the new washer and gasket in the correct orientation according to the factory parts diagram.
Position the valve cover properly and reinstall the mounting bolts.
Always follow the factory service manual for the correct valve cover bolt tightening sequence and torque specifications.
Avoid overtightening the mounting bolts, as excessive force can damage the valve cover, sealing grommets, or threaded mounting points.
When replacing the main valve cover gasket, inspect all mounting washers and spark plug tube seals for signs of wear.
For engines using six valve cover mounting washers, replacing all six during a complete valve cover gasket service can help provide consistent sealing across the assembly.
After installation, run the engine and inspect the valve cover perimeter and mounting bolt locations for oil leaks.

Note:

Includes one genuine Honda Valve Cover Washer with Gasket. Six washers are required for a complete replacement on applicable K-series valve cover configurations. Valve cover gaskets, spark plug tube seals, mounting bolts, and additional hardware are sold separately unless otherwise specified.

For Honda and Acura enthusiasts repairing valve cover oil leaks, rebuilding a K-series engine, or restoring factory engine hardware, this genuine Honda OEM Valve Cover Washer with Gasket provides the original equipment fit and dependable sealing performance needed for a proper installation.