Kenworth T680 Air Valve OEM# G90 1266 121 A in Des Moines, IA $302.00 T25,G1,G2 Exhaust Valve (31.2x8) 1.5D (CK), 1.6D (CR,CS,JX,CY), 1.7D Valve Exhaust 4WD Partshop Toyota Avalon Exhaust Gas Recirculation (EGR) Cooler 2568036012 Exhaust Valve VE0129 ET ENGINETEAM RF5C 12121, RF2A 12121, R6416. One New Aftermarket Replacement Exhaust Valve Fits International Harvester (IH) Fits FARMALL Fits Cub Tractors This exhaust valve is a direct aftermarket replacement for the Fits International Harvester C 60 engine found in Fits FARMALL Fits Cub and Fits Cub Lo Boy tractors. Used four per engine, this valve is a key component of the cylinder head assembly and is commonly replaced during engine rebuilds and valve jobs. Important: This valve is NOT compatible with engines equipped with exhaust valve rotators (Rotocaps). Verify your engine configuration before ordering. Specifications Head Diameter: 0. 902 in. Overall Length: 3. 390 in. Valve Face Angle: 45 degrees Quantity: 1 valve (4 required per engine) Engine: Fits International Harvester C 60 Compatible Models Fits International Harvester (IH) Fits FARMALL: Fits Cub, Fits Cub Lo Boy, Fits Cub 154 Lo Boy, Fits Cub 184 Lo Boy, Fits Cub 185 Lo Boy Replaces Part Number(s): 251261R2, 251261R3, 357547R1, A1955 New aftermarket replacement part not remanufactured, not used.