Seal combustion pressure in the cylinders and keep coolant and oil in their own passages with the APEX Cylinder Head Gasket AHG143. It is a head gasket Honda Civic 2003 owners can use as a direct-fit replacement on the listed application: the 2001-2005 Honda Civic with the L4-1.7L engine.
As an engine cylinder head gasket, it sits between the cylinder head and the engine block. It is designed to seal the combustion chambers and to keep the coolant and oil passages that pass between the two separated from each other and from the cylinders.
- Part: Cylinder head gasket, APEX part number AHG143.
- Fitment: 2001-2005 Honda Civic, L4-1.7L.
- Quantity per application: One head gasket on the listed engine.
- Service: Fitted during reassembly after the cylinder head is removed for repair or rebuild.
Signs a head gasket may need replacing: coolant loss with no visible external leak, white exhaust smoke, overheating, milky or contaminated oil, bubbles in the coolant reservoir, or misfires and low compression readings. Other faults can cause these symptoms, so diagnose the cause before replacing parts. If a failed head gasket is the cause, this cylinder head gasket for the 2001-2005 Honda Civic 1.7L replaces it.
Check the vehicle service information for the correct head bolts and whether they may be reused. Follow it for the tightening sequence, the torque values, and the inspection of the cylinder head and block sealing surfaces.
