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Ultimate Cylinder Head Sealing for 4G63

Maintaining a perfect seal between your cylinder head and engine block is critical for performance, especially in boosted 4G63 applications. This ARP Head Bolt Kit is the industry-standard upgrade for 1994-1999 Mitsubishi Eclipse and 2003-2006 Lancer Evolution models. These bolts are designed to provide significantly higher clamping force than factory head bolts, preventing head gasket failure under high boost pressures.

Why ARP Head Bolts?

• Fits 4G63 DOHC engines (94-99 Eclipse, 03-06 Lancer Evo)
• Superior 8740 chromoly steel construction
• Ensures consistent gasket compression
• Prevents head lift under high-boost conditions

When you increase the power of your 4G63, the cylinder pressure rises dramatically. Standard head bolts can stretch, leading to a blown head gasket and potential engine damage. ARP bolts are heat-treated to provide the exact tensile strength needed to keep your head firmly seated, regardless of the boost levels you are running. Each kit includes high-quality hardened washers and nuts to ensure even distribution of clamping force. This is a must-have upgrade for any serious engine build, providing the reliability you need to push your car to the next level. Get your engine hardware from GGCRACING.