| Engine Block Coolant Drain Plug | 22 |
| Engine Block Oil Gallery Plug | 22 |
| Cylinder Bore Diameter | 3.8 |
| Out-Of-Round Maximum | 0.001 |
| Taper | 0.001 |
Cylinder Bore Data/Specifications
Need a step-by-step guide?
Get an AI-powered repair guide with parts lists, cost estimates, and clear instructions for your 1999 Buick.