Feature●Kenworth & Peterbilt Radiator Cap●Pressure Rating: 10 lbs.●Depth: 1.14" Diameter: 2.81" Plunger Diameter: 2.05"●Kenworth: T400, T600, T800, W900 Peterbilt: 377 & 379●Replaces: RC1040 & 10283Description Belgrade Parts & Service, Inc. Kenworth & Peterbilt Radiator Cap Replaces: RC1040 10283