Heavy-Duty Composition Head Gasket


  • 4.0″ to 4.125″ cylinder bores
  • Teflon-coated
  • 0.041″ compressed thickness
  • For competition engines
Due to world events we are working with our manufacturers every day to ship and receive parts. If the part you are looking for is time sensitive please give our team a call at 855-806-1147 before ordering to ensure it's availability.
SKU: 10185054 Categories: ,

Heavy-Duty Composition Cylinder Head Gasket

P/N 10185055

– Teflon-coated
– Pre-flattened wire O-rings around each cylinder
– For competition engines with cylinder bores of 4.0″ to 4.125″
– 0.041″ compressed thickness

Note: Drill steam holes when used on 400-ci Small-Blocks. Gasket does not require re-torquing.




Composition Cylinder Head Gasket

10185054 Chevrolet Head Gasket

Heavy Duty

Chevrolet Performance cylinder head gaskets, cylinder head bolts and cylinder head studs are the finest-quality parts available. Their superior construction ensures optimum sealing between cylinder heads and the engine block.

Chevy Gasket packages contain one gasket unless otherwise specified. Head gaskets are available in a variety of materials and thicknesses. GM engineers recommend using the proper gasket to maintain compression ratios and minimum piston-to-cylinder-head clearances.

Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to