What causes valve stem seals to fail?

Over time, the rubber material in valve stem seals can become hardened and brittle due to constant exposure to heat and oil. This degradation causes them to crack or lose their sealing ability, allowing oil to seep past the valve stem.

What are the symptoms of bad valve stem seals?

Common signs include blue smoke from the exhaust, especially after the engine has been idling or when first starting up. You might also notice increased oil consumption between oil changes or fouled spark plugs.

Do I need to remove the cylinder head to replace valve stem seals?

Yes, replacing valve stem seals typically requires removing the cylinder head. Once the head is off, you'll need to keep the valves from falling into the cylinder while you compress the valve springs to access the seals.

Victor Reinz Engine Valve Stem Seal Set SS46020B

Name: MAHLE Original Lexus Gs400 00-98 Engine Valve Stem Seal Set
Brand: Victor Reinz
Price: 13.79 USD
Availability: InStock

MAHLE Original Lexus Gs400 00-98 Engine Valve Stem Seal Set

$13.79

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

Victor Reinz SS46020B engine valve stem seal set. Fits many Lexus and Toyota models. Essential for preventing oil consumption.

Key Features

Fits a wide range of Lexus and Toyota vehicles, including 1998-2000 Lexus GS400, 2008-2011 Lexus LS460, and 2000-2020 Toyota Tundra.
Helps prevent oil from leaking into the combustion chamber, reducing smoke and oil consumption.
Well-built seals designed to withstand engine heat and pressure.
Essential for engine top-end rebuilds or addressing oil burning issues.
Part number SS46020B.

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Will this fit your vehicle?

Product Details

If you're noticing blue smoke from your exhaust, especially on startup or when the engine's been idling, it's often a sign that your valve stem seals are worn out. This Victor Reinz valve stem seal set, part number SS46020B, is designed to replace those old, hardened seals and help get your engine running smoothly again. These seals are critical for keeping oil from leaking down the valve guides into the combustion chamber, which can cause smoking, fouled spark plugs, and increased oil consumption.

This set is well-built to handle the heat and pressure inside your engine. When you're rebuilding the top end of your engine or just addressing oil consumption issues, replacing these seals is a key step. They fit a wide range of Lexus and Toyota vehicles, including popular models like the 1998-2000 Lexus GS400, the 2008-2011 Lexus LS460, and the 2000-2020 Toyota Tundra. Having the right seals ensures a proper seal around the valve stem, helping to maintain good compression and reduce emissions.

When installing these, it's important to have the cylinder head removed and the valves properly supported to prevent them from falling into the cylinder. Refer to your vehicle's service manual for the specific procedure for your application.