| Year | Make | Model |
|---|---|---|
| 1994 - 2002 | Audi | A8 Quattro |
| 2004 - 2006 | Saab | 9-2X |
| 2002 - 2008 | Subaru | Forester |
| 1992 - 2011 | Subaru | Impreza |
| 1989 - 2009 | Subaru | Legacy |
| 1993 - 1998 | Subaru | Legacy Touring Wagon BG |
| 2003 - 2015 | Subaru | Outback |
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Manley 36mm Stainless Race Flo Valve | Subaru WRX (00-03) / STI (04) (11138-1)
Manley 36mm Stainless Race Flo Valve | Subaru WRX (00-03) / STI (04) (11138-1)
SKU:11138-1
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Regular price
$24.40 USD
Regular price
$31.42 USD
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$24.40 USD
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▶ Vehicle Fitments
The Manley Race Series Valve for Subaru WRX (2000-2003) EJ20 engines and 2004 STI models is a high-performance intake valve designed to withstand demanding racing conditions. Crafted from durable stainless steel, this 36mm valve features precise engineering to optimize airflow and combustion efficiency. It is engineered for engines operating under 8000 RPM, making it ideal for bracket, drag, and oval track racing. The valve's robust construction ensures longevity and consistent performance under high-stress conditions, providing racers with a reliable upgrade to enhance engine responsiveness and power output.
This valve is a direct replacement for stock components on Subaru WRX and STI models from 2000 to 2004. It fits engines with the EJ20 configuration and is suitable for various racing applications, including street, track, and competition use. Installation involves standard valve replacement procedures, and the kit includes a single stainless steel intake valve. Designed for performance enthusiasts seeking durability and increased airflow, this valve helps maximize engine efficiency and power in high-performance racing environments.
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Overview
Overview
Manley Performance Intake Valves
Fits Subaru WRX 2000–2003 and STi 2004
Part #: 11138-1
Overview
The Manley Race Series intake valves are precision-engineered components designed for high-performance Subaru engines. Crafted from high-quality stainless steel, these valves are built to withstand the demanding conditions of racing and high-rev applications. Whether you’re involved in bracket racing, drag racing, or oval track competitions, these valves provide the durability and reliability needed to support your engine’s performance under intense conditions. They are ideal for enthusiasts and professional racers seeking to optimize airflow and engine response at elevated RPMs, helping to maximize power output and engine efficiency.Key Features
Designed with meticulous attention to detail, these valves feature a stainless steel construction that offers excellent strength and corrosion resistance. The 36mm diameter ensures optimal airflow, supporting increased combustion efficiency. The Race Flo design minimizes flow restrictions and promotes better fuel atomization, contributing to improved throttle response and power delivery. Engineered for engines operating up to 8000 RPM, these valves are a reliable upgrade for high-performance builds. Their robust construction helps maintain valve integrity during aggressive racing conditions, ensuring consistent performance and longevity.Construction & Design
Manufactured from premium stainless steel, these valves are machined to precise specifications for perfect fitment and durability. The Race Flo design incorporates optimized port shapes to enhance airflow and reduce turbulence, supporting high-RPM operation and efficient combustion.Performance & Response
These intake valves are intended to support engines running at high RPMs, helping to improve airflow and combustion efficiency. They contribute to a more responsive throttle feel and increased power potential, making them an excellent choice for racing applications.Installation & Fitment
Designed specifically for Subaru WRX models from 2000 to 2003 and the 2004 STi, these valves are direct replacements for stock components. Proper installation requires standard engine service procedures and should be performed by qualified technicians.What’s Included
This package includes one stainless steel intake valve with a 36mm diameter, engineered for high-performance racing use. Additional hardware or components are not included.
