Quick view 1991 Buick Century 2.5L Intake Valve IV337ZE2 1991 Buick Century 2.5L Intake Valve Engine Parts # IV337ZE2 Fits: [1990-1993] GM [Nitride Coated; 1 Groove; 43.7mm Head Dia.; 7.96mm Stem Dia.; 116.6mm O.A.L.] / L4 / 2.5L / 151 OHV 8VFitment... MSRP: Was: Now: $8.97 Choose Options