What is the main purpose of valve stem seals?

Valve stem seals are designed to prevent oil from leaking down the valve stem and into the combustion chamber. Worn seals can cause increased oil consumption and blue smoke, especially on startup.

What vehicles does this Victor Reinz valve stem seal set fit?

This set fits a broad range of Subaru vehicles, including many models from 2005 through 2025, such as the Outback, Forester, Impreza, and WRX.

Do I need any special tools to install these valve stem seals?

Installation typically requires removing the cylinder head. Specialized tools are often needed to compress the valve springs and safely install the new seals without damaging them or other engine components. Refer to your vehicle's service manual for specific procedures.

Victor Reinz Engine Valve Stem Seal Set SS45991

Name: MAHLE Original Subaru B9 Tribeca 07-06 Engine Valve Stem Seal Set
Brand: Victor Reinz
Price: 28.19 USD
Availability: InStock

MAHLE Original Subaru B9 Tribeca 07-06 Engine Valve Stem Seal Set

$28.19

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Victor Reinz engine valve stem seal set SS45991. Fits a wide range of Subaru models.

Key Features

Fits 11+ vehicle make/model combinations.
Includes seals for multiple valves, suitable for engine top-end rebuilds.
Made from durable material to resist heat and oil exposure.
Helps prevent oil consumption and blue smoke on startup.
Designed for a proper seal to maintain engine performance.

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Will this fit your vehicle?

Product Details

Victor Reinz is known for making solid engine components, and this valve stem seal set, part number SS45991, is no exception. If you're rebuilding the top end of your Subaru engine, replacing these seals is a critical step to prevent oil from leaking past the valve guides and into the combustion chamber. Worn seals can lead to increased oil consumption, blue smoke on startup, and fouled spark plugs, so getting them right makes a big difference.

This set includes all the necessary seals to address the valves on your engine. They are made from a durable material designed to withstand the heat and oil exposure they’ll encounter. Proper installation ensures a good seal, which helps maintain consistent engine performance and reduces the need for frequent oil top-offs. This particular set fits a broad range of Subaru vehicles, including models like the Forester, Outback, and Impreza, making it a versatile choice for many mechanics.

When you're working on your engine, it's always a good idea to have a service manual handy for specific torque values and procedures. Replacing valve stem seals is often done with the cylinder head removed, so ensure you have all the necessary parts and tools before you begin.