GSC P-D Chrome Polished Intake Valves 36mm Head (STD) WRX / STI Subaru – Import Image Racing
Skip to content
GSC P-D Chrome Polished Intake Valves 36mm Head (STD) WRX / STI Subaru EJ 2002-2021 (8 PCS)

GSC P-D Chrome Polished Intake Valves 36mm Head (STD) WRX / STI Subaru EJ 2002-2021 (8 PCS)

Rated 5.0 out of 5
Based on 5 reviews
SKU: gsc2012-8
Availability: Out Of Stock
Product Type: Intake and Exhaust Valves
$146.35
$172.18
$146.35
Save $25.83

BuildBUX Rewards

Great news – on this purchase, you'll enjoy a BuildBUX bonus of $1.46.

Regular Price: $172.18 - Instant discount: $25.83 = $146.35


Subtotal: $146.35
Part #: 2012-8

When designing these valves, GSC used advanced 3D design and simulation programs to create a stronger and higher flowing valve head design. Prototypes were used in the specific applications to make sure that they have the highest flowing valve head that is available on the market today. The materials they have used have less valve distortion at the face than any of the tested designs which allow for better sealing under extreme conditions to promote more consistent performance through the life of the valve.

Comes in a set of 8 intake valves.

Here are more key features:

Valve Features:

  • Swirl polished heads for smoother airflow over the valve
  • Back cut to reduce valve weight for higher rpm, higher boost pressure and allow for more aggressive cam profiles without increasing valve spring seat pressures.
  • Valve stems are micro-polished to allow for less oil retention on the stem which creates less drag on the stem to guide for a smoother motion.
  • Fully nitrated ( this includes the 45 which increases valve life and makes a better seal at the valve seat for improved cylinder pressure) also reduces carbon buildup on the backside of the valve.
  • Intake valves are a modified 21-4n stainless and Exhausts are a modified 23-8n stainless material for high heat capacity while maintaining longevity.
  • Valve tips are either hardened or have a stelite wafer tip fused so that the tip is within 5 Rockwell C of the rocker or valve tappet for extended life and less wear
  • Valve tip lengths. They have taken extra time to adjust tip heights on the applications to require less tipping of the valve to maintain proper tip height for proper valvetrain geometry and to cut down on install times when setting valve lash.
  • They have also adjusted the Keeper grove to properly balance intake and exhaust spring pressures to reduce the use of valve spring shims and maximize performance from their spring and retainer kits.

    Valves will work with an OEM keeper/lock or when available their upgraded keeper/lock. It's not mandatory but it is suggested that any valve lock not be reused on performance applications due to material grooving.

    Here are more key features:

    Valve Features:

  • Swirl polished heads for smoother airflow over the valve
  • Back cut to reduce valve weight for higher rpm, higher boost pressure and allow for more aggressive cam profiles without increasing valve spring seat pressures.
  • Valve stems are micro-polished to allow for less oil retention on the stem which creates less drag on the stem to guide for a smoother motion.
  • Fully nitrated ( this includes the 45 which increases valve life and makes a better seal at the valve seat for improved cylinder pressure) also reduces carbon buildup on the backside of the valve.
  • Intake valves are a modified 21-4n stainless and Exhausts are a modified 23-8n stainless material for high heat capacity while maintaining longevity.
  • Valve tips are either hardened or have a stelite wafer tip fused so that the tip is within 5 Rockwell C of the rocker or valve tappet for extended life and less wear
  • Valve tip lengths. They have taken extra time to adjust tip heights on the applications to require less tipping of the valve to maintain proper tip height for proper valvetrain geometry and to cut down on install times when setting valve lash.
  • They have also adjusted the Keeper grove to properly balance intake and exhaust spring pressures to reduce the use of valve spring shims and maximize performance from their spring and retainer kits.

    Valves will work with an OEM keeper/lock or when available their upgraded keeper/lock. It's not mandatory but it is suggested that any valve lock not be reused on performance applications due to material grooving.

    Reasons to get BuildBUX GOLD?
    We could name a few

    BuildBUX Gold: $4.98/mo

    More Cashback

    Get more cashback! Items are changing weekly. Anywhere from 1% to 20% Back in BuildBUX when you make purchases. Products

    Free Money

    Every month when you are charged your $4.98 subscription fee, you will get $15 in BuildBUX

    Easy To Cancel

    Cancel anytime, month to month terms.

    Get Started

    BuildBUX: Free

    Cashback

    Get 1% back on every purchase on eligible brands.

    Free

    Completely free to use. Just place an order!

    Get Started
    average rating 5.0 out of 5
    Based on 5 reviews
    • 5 Stars
      5 Reviews
    • 4 Stars
      0 Reviews
    • 3 Stars
      0 Reviews
    • 2 Stars
      0 Reviews
    • 1 Star
      0 Reviews
    100% of reviewers would recommend this product to a friend
    Customer photos and videos
    Review posted
    Reviewed by Aaron M.
    Verified Buyer
    Rated 5 out of 5

    Quality part

    Car runs smooth and strong with heads refreshed.

    Loading...
    I recommend this product
    Was this helpful?
    Review posted
    Reviewed by Ian, from United States
    Rated 5 out of 5

    Nice valves

    My machinist was very pleased with the quality of the valves and they were almost all had nice contact surfaces. He did have to turn a few to correct them. But he said it is very common now days on almost all valves so I would recommend checking the contact surface with the valve seat and have a machinist correct them if they are not perfect. This will make the lapping go much better.

    Loading...
    I recommend this product
    Was this helpful?
    Review posted
    Reviewed by Mike D., from United States
    Rated 5 out of 5

    Great upgrade

    A must when building your motor. Great price and parts.

    Loading...
    I recommend this product
    Was this helpful?
    Review posted
    Reviewed by Colton, from United States
    Rated 5 out of 5

    Best valves for the price

    I decided to go with these valves on my ej205 stroker, since some of my old valves were bent. The packing was awesome. The price is fair, and the attention to detail on each valve is amazing the swirl is perfect.

    Loading...
    I recommend this product
    Was this helpful?
    Review posted
    Reviewed by CFlash, from United States
    Rated 5 out of 5

    The best do the price

    First-rate material, my machine shop praised the material a lot. Fits perfectly

    Loading...
    I recommend this product
    Was this helpful?

    Thanks for subscribing!

    This email has been registered!

    Shop the look

    Choose Options

    Edit Option
    is added to your shopping cart.

    Choose Options

    this is just a warning
    Login