Part Type: Piston Ring. Bore (in): 4.000 in. Top Ring Included: Yes. Top Ring Thickness: 1.5mm. Second Ring Included: Yes. Second Ring Thickness: 1.5mm. Oil Ring Included: Yes. Oil Ring Thickness: 3.0mm.
Dorman M39968 Brake Master Cylinder for 1990-1991 Honda Civic Bore: 15/16 In.
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Skunk2 Thick Head Gasket 87.00MM/3.425" Max Bore 1.35MM/0.053" / 366-05-4000
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Tilton Brake Master Cylinder, 15/16" Bore Diameter BODY ONLY A55