Clevite STD Size P Series Main Bearings for B Series, B18, B18A, B18B, B18C, B16, B20, etc

Clevite P Series Main Bearings for Honda / Acura B Series Engines including Integra GSR, Type R, Civic Si, Honda CRV: B18A, B18B, B18C, B18C1, B18C5, B17A, B17A1, B16A, B16A2, B16A3, B20B, B20Z 

And Honda/Acura K Series Engines including K20, K20A, K20A2, K20Z, K24, K24A2, etc

P-Series bearings are the oldest members of the Clevite 77 performance-bearing family.
They're intended for high-revving engines, especially those where the high rpm cause the rod bores to narrow. To compensate for this distortion, they have higher eccentricity and a high crush factor. P-Series bearings are built on hardened-steel backings with extra-thin overlays.