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Six-Star Head Gasket Repair Kit (Non-Turbo)


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Six-Star head gasket repair kit for Impreza, Forester, Outback, Legacy and Baja models. Includes gasket seal replacements, Six-Star gasket set (2) and high quality OEM parts.

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Smart Quality Parts offers an industry leading 2 YEAR, UNLIMITED MILEAGE warranty on all parts purchased. If a part fails within this time period we will replace it or refund the full value of the part purchased. Visit our Terms page to see our entire policy.

Six Star Head Gasket Repair Kit Contents

We are proud to offer a head gasket seal repair kit that includes the popular Six Star head gaskets paired with equally high quality OEM parts that you and your Subaru can depend on. Make sure you put in your full VIN before placing your order to make sure you get the correct parts for your car.

Head Gasket Repair Kit Includes

  • Cylinder Head Gaskets (2)
  • Valve Cover Gasket Kit
  • Front Cam Seals (2)
  • Front Crank Seal
  • Rear Main Seal
  • Water Pipe Orings (2)
  • Intake Manifold Gaskets (2)
  • Exhaust Manifold Gaskets (2)
  • Oil Fill Neck Oring
  • Rear Cam Plugs (2)
  • Thermostat Kit (With Gasket)
  • Rear Piston Plug Oring
  • Oil Filter and Crush Washer 

*Pictured is a kit for a 2004 Outback, picture not representative for all years and models, see list above for specifics. Kit includes all replaceable seals and gaskets when taking engine out of vehicle.

About Six-Star® Head Gaskets

Head Gasket

Six-Star® Head gaskets are a multi-layer stainless steel head gasket engineered to insure years of longevity for your Subaru. 

We believe so strongly in these gaskets that we exclusively use Six-Star® brand head gaskets on all of the phase1 and phase2 2.5 liter engines we repair at Smart Service. 

We all know that a head gasket issue can be one of the biggest headaches you’ll ever run into on your Subaru. We only use Six-Star® gaskets at Smart Service when we perform a head gasket repair because we want it to be the final time you ever have to replace your head gaskets. 

In our opinion, they are currently the best gasket available for the repair. 

About Six-Star® Head Gaskets


The Viton rubber coating is one of Dupont’s high performance elastomers. In technical terms, Viton flouroelastomer rubber based material will easily handle temperatures from -40° to over 400ºF with the ability to withstand temperatures up to over 700°F for short periods. 

The composition of these gaskets along with the interlocking embossments create unsurpassed sealing properties making Six-Star® Head Gaskets the ultimate choice for your all aluminum Subaru engine.

Subaru coolant conditioner is NOT recommended.

Why Choose Six-Star®?

Close Up

The unique design and properties of the multi-layered stainless steel gasket combined with superior ability of the Viton coating to withstand heat, chemicals and corrosion, it may be the last head gasket replacement you’ll ever need for your Subaru engine. Not to mention, you’ll never need to use the Subaru Coolant Additive ever again on your engine.


Unit Pricing1 ct
Minimum Handling Time1
Max Handling Time3

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.

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