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home > Brian Crower VALVE GUIDES - 6.6mm EXHAUST (Mitsubishi 4G63/Evo) > Brian Crower VALVE GUIDES - 6.6mm EXHAUST (Mitsubishi 4G63/Evo)
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Brian Crower VALVE GUIDES - 6.6mm EXHAUST (Mitsubishi 4G63/Evo)Brian Crower VALVE GUIDES 6. 6mm EXHAUST Applicable for Mitsubishi 4G63 and Evolution Models Part #: BC3911 Overview The Brian Crower VALVE GUIDES 6. 6mm EXHAUST are precision engineered components designed to enhance the durability and performance of your Mitsubishi 4G63 engine and its Evolution variants. Crafted by Brian Crower, Inc., a trusted name in high performance engine parts, these valve guides are ideal for enthusiasts and professional
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Brian Crower VALVE GUIDES - 6.6mm EXHAUST

Applicable for Mitsubishi 4G63 and Evolution Models

Part #: BC3911

Overview

The Brian Crower VALVE GUIDES - 6.6mm EXHAUST are precision-engineered components designed to enhance the durability and performance of your Mitsubishi 4G63 engine and its Evolution variants. Crafted by Brian Crower, Inc., a trusted name in high-performance engine parts, these valve guides are ideal for enthusiasts and professional rebuilders seeking reliable, high-quality replacements that support increased engine longevity and efficiency.

Whether you're building a high-performance street engine, preparing for a track day, or restoring a classic Mitsubishi, these exhaust valve guides help ensure proper valve seating, reduce oil consumption, and maintain optimal compression. They are engineered to withstand the rigors of spirited driving and aggressive tuning, making them a valuable upgrade for your engine's valve train.

Key Features

Brian Crower’s exhaust valve guides are manufactured with meticulous attention to detail, ensuring a perfect fit and long-lasting performance. Key features include:

  • Precision-machined from high-quality materials to meet or exceed OEM specifications, ensuring durability and reliability under high-stress conditions.
  • Designed with a 6.6mm diameter to match the factory exhaust valve size, providing a seamless fit for Mitsubishi 4G63 and Evolution models.
  • Engineered to improve valve stability and seating, which helps maintain optimal combustion chamber sealing and reduces oil consumption.
  • Constructed to withstand high temperatures and aggressive engine operation, supporting increased horsepower and torque gains.
  • Manufactured by Brian Crower, a leader in performance engine components, ensuring consistent quality and performance.

Construction & Design

These valve guides are crafted from premium materials that offer excellent wear resistance and thermal stability. The guides feature a precise bore diameter and surface finish, ensuring smooth valve movement and minimal friction. Their robust construction helps prevent valve stem wear and deformation, even under high RPM and boost conditions. The guides are designed for easy installation, with a perfect match to OEM specifications, ensuring a secure fit and reliable operation.

Installation & Fitment

Installing these valve guides is a straightforward process for experienced engine builders or professional mechanics. They are designed as direct replacements for the factory exhaust guides on Mitsubishi 4G63 engines and Evolution models. No modifications, cutting, or special tuning are required for proper fitment. It is recommended to have the guides installed with proper valve seat reconditioning to ensure optimal sealing and longevity.

  • Direct replacement for OEM exhaust valve guides on Mitsubishi 4G63 and Evolution models
  • No cutting, drilling, or additional modifications needed
  • Ideal for engine rebuilds, upgrades, or restoring original performance

What's Included

  • One set of Brian Crower exhaust valve guides (6.6mm diameter)

Ideal For

  • High-performance Mitsubishi engine builds
  • Engine rebuilds and restorations
  • Enthusiasts seeking reliable, high-quality valve train components
  • Track and spirited street driving applications

Brian Crower VALVE GUIDES - 6.6mm EXHAUST (Mitsubishi 4G63/Evo)

Item no : 35442869216
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US$ 70.52
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Min. order: 1piece

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