Nissan 14004-F4504 Exhaust Manifold

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Run the engine and check for exhaust leaks.

Remove the bolts retaining the lower heat shield to the exhaust manifold.

For the left manifold, remove the air intake duct and the top half of air cleaner housing as an assembly from the throttle body. Disconnect the EGR flare tube from the exhaust manifold. Remove the bracket holding the engine oil dipstick. Remove the heat shield from the manifold to provide access to the manifold fasteners, and remove the upper row of manifold nuts. Work from the ends toward the middle when removing the manifold fasteners. Working from below, remove the lower row of manifold fasteners and remove the manifold from the engine.

Raise the front of the vehicle and support it securely on jackstands.

Position the new exhaust manifold gaskets over the studs on the cylinder head.

For the left manifold, remove the air intake duct and the top half of air cleaner housing as an assembly from the throttle body. Disconnect the EGR flare tube from the exhaust manifold. Remove the bracket holding the engine oil dipstick. Remove the heat shield from the manifold to provide access to the manifold fasteners, and remove the upper row of manifold nuts. Work from the ends toward the middle when removing the manifold fasteners. Working from below, remove the lower row of manifold fasteners and remove the manifold from the engine.