Clevite Buick V6 181-204-231-252 1977-90 Con Rod Bearing SetIdeal for rebuilding engines where more demanding use is anticipated, such as heavy duty, motorsports, or street performance. As it is the most versatile replacement, Clevite engine bearing P Series is suitable for most OE applications. Due to the increased load capacity of the TriMetal design, it is a suitable upgrade from BiMetal engine bearings. This Part Fits: Year Make Model Submodel 1980 1981 Buick Century Base 1978 1979,1982 1990 Buick Century