Six Star Exhaust Valve Stem Seals

Description

On a Subaru, replacing the intake and exhaust valve stem seals is important when the cylinder heads are already being serviced because the seals control how much engine oil reaches the valve stems.

Why replace them:

-Prevent oil consumption: Worn valve seals can allow oil to leak past the valve stem and into the combustion chamber.

-Reduce blue exhaust smoke: Oil entering the combustion chamber can cause blue smoke, especially after startup or extended idling.

-Prevent carbon buildup: Oil burning can leave deposits on the valves, pistons, and combustion chamber.

-Maintain proper valve lubrication- new seals provide the correct amount of oil to the valve stem without allowing excessive oil past the guide.

-Prevent future leaks: Valve seals harden and shrink with age and heat. Reusing old seals after a head repair can lead t an oil-consumption problem shortly afterward.

-Avoid doing the job twice: Since the valve springs and valves are already accessible during cylinder-head work, replacing the seals is relatively inexpensive compared with having to disassemble the heads again later.

-Help maintain compression and combustion efficiency: Excessive oil entering the cylinders can contribute to fouled spark plugs and poor combustion.

Please make sure you enter your full VIN before you place your order so we can make sure you get the correct parts for your car.

Additional information

Weight	1 lbs
Dimensions	9 × 6 × 2 in
Model	2003-2006 Baja 2.5L (Non-Turbo), 1999-2010 Forester 2.5L, 1999-2011 Impreza 2.5L, 2000-2005 Outback/Legacy 2.5L, 2006-2009 Outback/Legacy 2.5L, 2010-2012 Outback/Legacy 2.5L

At Smart Service (and Smart Quality Parts), we have been carrying and using the Six Star brand in our repair facility for over 15 years. Since the majority of our in-house technicians are Subaru factory trained we understand the benefit and need for correctly fitting and functioning replacement parts. The benefit of being an independent facility is that we are not required to use the Genuine Subaru stamped parts but unlike other independents, we didn’t want to use aftermarket parts just to cut costs and increase our margins.

We found Six Star in that search for the perfect balance between OEM quality and a more affordable price by cutting Subaru out as a middleman. We supplement with the Genuine Subaru parts where we feel that is needed or required if Six Star doesn’t manufacture a certain part, but we mostly use Six Star because more often than not the part is identical to what you would buy at the dealer.

The description below outlines the color and sticker system on the parts you may receive. Please know that 90%+ of the Six Star parts we carry are the Gold Star OEM designation and the Red Star options are just as good in our opinion (see our replacement oil filter for example, you can see it cut open next to a Genuine Subaru filter there is no difference at all).

We offer our own private Six Star label parts that identifies OEM parts with a gold star:

and alternative source parts with a red star:

Genuine = Exact part you would purchase at your Subaru dealer.
OEM = Original Equipment Manufacturer. The part was made by the exact same manufacturer that made the original part for your car. For example if you open a genuine Subaru wheel bearing you will find that the bearing is an NSK bearing. If you buy that same bearing OEM you’re getting the same part.
Alternative Source = These are parts that are manufactured by an indepedent aftermarket parts facility. Our alternative source parts are put through the rigors at Smart Service before we offer them online.