Precision Works Oil Control Valve Subaru 2008-2014 WRX & 2008-2014 STi EJ25
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
Engineered and machined in-house at PLM using our latest Haas 5-axis CNC machines, this High Performance Oil Control Valve is designed to solve one of the biggest weaknesses of the Subaru boxer platform—oil surge in the cylinder heads under hard cornering. When lateral G-forces push oil into the valve cover ports, traditional PCV, A/O separator, and catch-can systems can quickly become overwhelmed. This leads to falling oil levels, increased risk of oil starvation, and in extreme cases, overflow onto hot engine components.
Adapted from a proven design long used in aerobatic aircraft, our Oil Control Valve automatically prevents oil from exiting the head ports during high lateral loads while still allowing full crankcase ventilation under normal driving, acceleration, and braking. The system closes only the affected head port during severe cornering while all other ports continue to operate normally—maintaining proper blow-by evacuation with no negative impact on engine performance. The result is a safer, cleaner, and more reliable setup for track enthusiasts who push their Subaru to the limit.
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.