Why are valve stem seals important?

Valve stem seals prevent engine oil from leaking down the valve guides into the combustion chamber. Worn seals can cause blue smoke on startup and increase oil consumption.

What material are these valve stem seals made from?

These seals are made from Viton, which is known for its excellent resistance to high temperatures and engine oils. They also have a metal jacket for a solid fit.

Do I need to replace all the valve stem seals when doing this job?

It's generally recommended to replace all valve stem seals on the engine when you're performing this type of service, as they all wear over time. This set is specifically for the exhaust valves.

Specifications

Brand: Cometic Gasket
Part #: 3158V

Cometic 90-94 Nissan SR20DE/DET DOHC 16V 2.0L Exhaust Valve Stem Seals

Name: Cometic 90-94 Nissan SR20DE/DET DOHC 16V 2.0L Exhaust Valve Stem Seals
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-90-94-nissan-sr20de-det-dohc-16v-2-0l-exhaust-valve-stem--t14-11355
Price: 9.16 USD
Availability: BackOrder

$9.16

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Cometic exhaust valve stem seals for 90-94 Nissan SR20DE/DET DOHC 16V 2.0L engines. Vital for preventing oil burning.

Key Features

Fits 1991-1994 Infiniti G20, 1995-1998 Nissan 240SX, 1995-1998 Nissan Altima, 1998 Nissan Frontier, 1991-1993 Nissan NX, and 1991-1994 Nissan Sentra.
Designed for SR20DE and SR20DET DOHC 16V 2.0L engines.
Exhaust valve stem seals help prevent oil from entering the combustion chamber.
Constructed with Viton material for heat and oil resistance.
Features a metal jacket for a secure fit.
Dimensions: 6mm inner diameter, 10.7mm outer diameter, 11.5mm and 13.8mm heights.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

If you're working on the top end of a 1991-1994 Nissan Sentra, 1991-1993 NX, or a 1991-1994 Infiniti G20 with the SR20DE or SR20DET engine, these exhaust valve stem seals from Cometic are what you'll need. These seals are crucial for keeping oil from leaking down the valve guides and into the combustion chamber, which helps prevent blue smoke on startup and reduces oil consumption. This set is specifically for the exhaust valves.

These seals are made with Viton, a material known for its resistance to heat and oil, and feature a metal jacket for a solid fit. The dimensions are 6mm (inner diameter), 10.7mm (outer diameter), and 11.5mm and 13.8mm (heights). Proper installation of these seals is key to their performance, ensuring a tight seal around the valve stem to do their job effectively.