The 4G63 Billet Upper Water Neck is a high-quality cooling system upgrade designed for Mitsubishi Lancer Evolution 6, 7, 8, and 9 models. Engineered for the legendary 4G63 engine, this billet water neck provides a strong and reliable replacement for the factory component while offering improved durability for high-performance and motorsport applications.

Key Features

• Fits: Mitsubishi Evolution 6, 7, 8 & 9
• Engine: Mitsubishi 4G63
• Precision-machined billet construction
• Stronger and more durable than the factory water neck
• Designed for high-performance and modified 4G63 engines
• Helps maintain reliable coolant flow
• Resistant to corrosion and harsh engine-bay conditions
• Ideal for street, track, drag, and motorsport builds
• Direct replacement-style design for easy installation

Billet Construction

Manufactured from high-quality billet material, the upper water neck is designed to withstand the increased heat and pressure commonly experienced by modified 4G63 engines. Its robust construction provides a durable solution for Evo owners looking to replace or upgrade the factory water outlet.

Built for High-Performance 4G63 Engines

The billet upper water neck is an excellent addition to upgraded Evo 6–9 cooling systems, particularly on engines equipped with increased boost, larger turbochargers, upgraded radiators, or other performance modifications.

Application

Vehicle: Mitsubishi Lancer Evolution 6 / 7 / 8 / 9
Engine: 4G63
Product Type: Billet Upper Water Neck
Application: Cooling System / Performance Upgrade
Use: Street / Track / Drag / Motorsport