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Killer B Oil Control Valve Subaru STI | WRX 2002-2021 - OCV1
Attention! This is not a product that would EVER be needed on a street car.

It is a product for racecars, specifically boxer engine cars, able sustain +1.5Gs consistently. If you are unsure if you have a 'racecar' ask yourself some simple questions. Does my car have a true safety cage? Does my car run race slicks? Do I have a competition license? If you do not answer yes to all 3, this product would very likely be utterly useless for you. If you did answer yes to all 3 please read on.

The Subaru boxer platform can have issues with oil surging in the heads. It can be related to the level of performance, driving style, track conditions and so on. This burden is often overwhelming to the PCV's A/O separator or Catch Can system causing them to fill. Filling an A/O separator or catch can causes oil levels to drop increasing the potential for oil starvation. Another condition is if a catch can fills, and overflows onto a hot engine and/or exhaust system creating a fire potential, which has been known you happen. The Oil Control Valve prevents oil flow out of the valve cover ports based on the lateral forces placed on the car. This design has been successfully used in aerobatic aircraft for years and we have adapted the design to be suitable for lateral loading vs inverted flight (which rarely happens in cars). Under straight line acceleration, braking and moderate cornering the PCV vents work just as they normally would; letting blow-by gasses vent from all ports. Under severe lateral loads the port from the surging head (facing the outside of a corner) is closed, not allowing oil to pass into the A/O or catch can setup. The balance ports and remaining head and crankcase ports still operate as normal. This has no negative effect on the engine or engine performance, while assuring blow-by gasses ONLY are permitted through the PCVs ports.

Features:
  • prevents oil flow out of the valve cover ports
  • design has been successfully used and tested
  • Under severe lateral loads the ports close
  • assuring blow-by gasses ONLY are permitted through the PCVs ports
Fitment:
  • Subaru STI 2002-2017
  • Subaru STi 2008-2021
  • Subaru WRX 2002-2017
  • Subaru WRX 2008-2022

Other Part Numbers:
Killer B #klbOCV1

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Killer B Banner

Who is Killer B?

Killer B is an aftermarket company based in Waynesboro Virginia. They are known for producing parts and accessories for the automotive industry, specifically, Subaru made vehicles. The company started out in a small garage equipped with only a handful of tools, passion and enthusiasm for cars. Today, they are one of the go-to Subaru experts in the market.

Hands-On Company

The company has involved itself with various racing teams and ordinary daily drivers to understand what their customers want. By getting information directly from them, they are able to produce parts that satisfy their actual needs. Over the years, they were able to perfect their craft and become experts when it comes to the Subarus.

Quality Products

All of their products are done in-house, from design to actual manufacturing and fabrication. This allows them to have full control over their quality. and at the same time, ensure that their products come out the way they would like it to be. Designed by enthusiasts for fellow enthusiasts, you can be sure that you will only be getting the best value for your money.

Purchase Killer B Products At Vivid Racing

If you own a Subaru and are in the market for high-quality performance parts and accessories for your vehicle, then Killer B is the brand for you. Dealing with Subaru’s, they understand what it takes to improve your vehicle’s visual look and performance. To know more about Killer B, visit Vivid Racing and check out their list of products that fit your specific requirement.





All Killer B Motorsport parts have a Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferable. If the product fails it would need to be determined by Killer B Motorsport that it is due to manufacturing defects in materials or workmanship. This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. Killer B Motorsport will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.).

Warranty claims must be shipped back to Killer B Motorsport for review. You must call or email for return authorization prior to returning the product. For warranty evaluation please return your item to Killer B Motorsport Warranty, 1 Solution Way, Suite 201, Waynesboro, VA 22980.

Warranty claims will not be honored if the product was not purchase through an approved dealer.

Killer B Motorsport does not Warranty Wrapped Headers.
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Things
Sale price None
Wholesale price $291.93
Shipping Weight: 2.20
Length: 9
Width: 9
Height: 7
Product Added At Tuesday 13 December, 2016
Product Modified At Friday 28 March, 2025
Imported By ETLOverride
Last Edited By Turn_API
View In Admin

Emissions Info
Carb Approved Yes
Carb Number -
Epa Status N/A
Prop65 Unknown
Carb Required -
Vendors
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Vendor Inv Cost Retail Jobber MAP Core Updated
Turn 14 $247.40 $329.00 ? $329.00 ? 2025-03-28 10:32:27


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