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Replacing Cylinder Head Fastening Bolts

Model: BMW Serie 3 E46 - Years 1998-2006
Part: Engine

Before repositioning the new cylinder head gasket, clean the threads of the cylinder head fastening holes using the appropriate tap, taking care not to let any debris fall into the cylinders. Once this operation is complete, apply sealant to the threads and the heads of the bolts, then position the new gasket and the cylinder head, tightening the fastening bolts in a crisscross pattern using both the angle wrench and the torque wrench to ensure a perfect seal of the head to the cylinder block and the integrity of the gasket.

Updated on 12 February 2026 by ScegliAuto

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Installation of Upgraded Intercooler Radiator with Pipes

Lift the vehicle on suitable axle stands, remove the front wheels, and then the front bumper and grille. Proceed to remove the front headlights; drain the coolant, remove the intercooler radiator and the hoses connecting it to the intake system. Position the new intercooler radiator in the grille, temporarily securing it with cable ties, and mark with a marker the part of the metal that needs to be removed to allow the new hoses to pass through. Cut the marked portion of metal and apply a gasket to the edge. Remove the inner cover of the bumper and position it near the radiator to identify any interfering parts to eliminate: again, apply a gasket to the edge of the cut. Create brackets for securing the new radiator and proceed with the installation of the connecting pipes from the radiator to the intake, shaping and connecting them appropriately. Finally, reassemble the bumper, headlights, and grille.

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