GSC Power Division GSC Exhaust Valve Guides

2007–2016 Mitsubishi Lancer Evolution X / 2008–2015 Mitsubishi Galant 4B11T 5.5mm Valve Stem

Part #: 3011.001-1

Overview

The GSC Power Division GSC Exhaust Valve Guides are high-quality replacement components designed specifically for Mitsubishi engines, including the 4B11T turbocharged powerplants found in the Mitsubishi Lancer Evolution X and Galant models. Crafted from durable manganese bronze, these guides are engineered to restore optimal valve operation, reduce wear, and enhance engine longevity. Whether you're rebuilding your engine, performing maintenance, or seeking to improve reliability, these guides offer a precise fit and superior material properties.

Ideal for performance enthusiasts, professional rebuilders, and DIY mechanics, these valve guides help ensure smooth valve movement, proper sealing, and consistent engine performance. Their robust construction and precise dimensions make them a reliable choice for maintaining or restoring your Mitsubishi's engine integrity, especially in high-performance or high-mileage applications.

Key Features

GSC Power Division's exhaust valve guides are meticulously manufactured to meet or exceed OEM specifications, providing a perfect fit for your Mitsubishi 4B11T engine. Made from manganese bronze, these guides offer excellent wear resistance and thermal stability, which are critical for maintaining proper valve clearance and preventing valve stem wear over time.

• Constructed from high-quality manganese bronze for durability and heat resistance
• Oversize OD (+.001 inch) to accommodate engine rebuilds and ensure proper clearance
• Precisely machined with a total length of 1.735 inches (44.07 mm) and an outer diameter of 0.4351 inches (11.05 mm)
• Designed specifically for Mitsubishi 4B11T engines from 2007 to 2016 Lancer Evolution X and 2008 to 2015 Galant models
• Ensures smooth valve operation, reducing wear and extending engine life
• Manufactured with strict quality control standards for consistent performance
• Easy to install as part of engine rebuild or maintenance procedures
• Backed by GSC Power Division's standard warranty for peace of mind

Construction & Design

The GSC Power Division exhaust valve guides are crafted from manganese bronze, a material renowned for its excellent wear resistance, thermal conductivity, and stability under high temperatures. The guides feature a smooth style finish, which facilitates easy installation and ensures minimal friction during valve movement. Their precise dimensions and oversize outer diameter allow for proper clearance and fitment within the cylinder head, making them suitable for engine rebuilds that require slightly larger guides to compensate for wear or to improve oil control.

The guides are manufactured with tight tolerances and undergo rigorous quality checks to guarantee consistency and reliability. Their durable construction helps withstand the demanding conditions of high-performance engines, reducing the risk of valve stem wear, guide deformation, or oil consumption issues.

Installation & Fitment

Installing the GSC Power Division exhaust valve guides is a straightforward process for experienced mechanics or skilled DIY enthusiasts. These guides are designed for direct replacement in the Mitsubishi 4B11T engine's cylinder head. No modifications, cutting, or drilling are required, and they fit precisely into the OEM guide bores. It is recommended to inspect and replace valve seals and perform a thorough cleaning during installation to ensure optimal operation. Proper lubrication and correct installation torque will help achieve a secure fit and long-lasting performance.

• Direct replacement for OEM guides in Mitsubishi 4B11T engines
• No cutting, drilling, or special tools required
• Ideal for engine rebuilds, maintenance, or performance upgrades

What's Included

• One manganese bronze exhaust valve guide with oversize OD (+.001 inch)
• Manufacturing warranty for quality assurance

Ideal For

This product is perfect for automotive enthusiasts, professional rebuilders, and mechanics working on Mitsubishi 4B11T engines. It is especially suitable for those performing engine overhauls, seeking to restore original performance, or upgrading engine components for enhanced durability and reliability.