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Mitsubishi 4G63 8V Cylinder Head with valve assembled (without cam and rockers) 171213-1

171213-1 https://www.acmeimpex.co.nz/web/image/product.template/14625/image_1920?unique=83c8e2a
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The Mitsubishi 4G63 8V Cylinder Head with Valve Assembled (without Cam and Rockers) is a robust, ready-to-use replacement head suited for when the original head shows wear, cracks, or other damage. Supplied already assembled with valves installed (but without the camshaft and rocker arms), it’s an excellent solution for rebuilds or repairs when you want a solid foundation and flexibility for your own components.

$ 805.57 805.57 NZD $ 805.57

$USD 805.56

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    Our 4G63 8-valve cylinder head assembly is designed to bring the engine back to life when the existing cylinder head is worn out over time, overheating or prolonged wear. The casting matches the original design of the famed 4G63 SOHC platform, once it is installed it aligns correctly and restores the right combustion chamber geometry. The valves are already pre-installed and assembled, which reduces several preparatory steps and helps move straight toward installing and tuning.

    Since this unit is provided without the camshaft and rocker arms, it offers you flexibility: you can reuse quality components from your existing setup or upgrade with aftermarket performance parts tailored to your intended use. That makes this head ideal for workshop rebuilds or custom builds where you want control over which cam profile and rocker setup to run.

    If the original head has warped surfaces, cracks around combustion chambers, or has valve-seat wear causing compression loss, replacing it with this head solves many of those issues. The alignment and port layout are designed to match OEM specifications for naturally aspirated and simpler setups.

    The sealing surface is machined which provides a clean finish and helps with proper gasket sealing also reduces the risk of repeated leaks or head gasket failure issues. When the cylinder head assembly is correctly installed and torqued, the engine should return to steady and give reliable performance.

    What this assembly helps with

    • Full replacement for worn or damaged original cylinder heads on 4G63 8-valve engines
    • Supplied with valves installed and assembled, reducing prep time before installation
    • Suitable for rebuilds, restoration projects, or custom builds where you supply your camshaft and rocker gear
    • Restores compression and sealing when the original head shows cracking or warping
    • Ideal for older naturally aspirated or classic 4G63 applications that need a reliable platform

    The part is a go-to for mechanics and rebuilders aiming for a dependable install without overspending on pre-set cam or rocker configurations. Each head is inspected for casting quality and finish before dispatch, ensuring you get a head that fits properly and gives you a stable base for your top-end rebuild.