Cylinder Sleeve, Standard Bore


  • Standard-bore steel cylinder sleeve
  • 3.980″ bore; can be overbored to 4.135″
  • For late-design aluminum Small-Block V-8
  • For 90° V-6 aluminum blocks
SKU: 12480004 Categories: ,

Standard Bore Cylinder Sleeve

P/N 12480004

Standard-bore steel cylinder sleeve for late-design aluminum Small-Block V-8 and 90° V-6 aluminum blocks, including P/N 10134400, P/N 10134351, P/N 10185075, and P/N 10134371

Note: Sleeve has 3.980″ bore; can be overbored to 4.135″.


Cylinder Sleeve

12480004 Chevrolet Cylinder Block Components

Standard Bore

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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