High Performance engines rely on three elements to keep and maintain the optimum temperature window. Air, Coolant, and, vitally, oil. Too cool and the engine will prematurely wear, too hot and the oil viscosity breaks down, in extreme cases boiling the oil pushing it's lubrication properties into negative territory (just about useless!).
The oil cooler assembly and the ancillary components need to be in perfect functional condition. If you are overhauling the assembly then this component and possibly some of those listed below maybe required:
B671347000
9011006346
2CR1346400
2CR1346500
2CR1315100
9011006341
2CR1315200
B671378200
9582706040
B671346300
27D1132800
9038706098
9011006400
5SL1267100
2CR1338100
Holding the oil temperature window at the ultimate parameters is vital for engine longevity. Add as many items as you wish to the same shopping cart, new grommets 9048015363, washers 90201063J2 and O-rings 9321013657 for example, and still only pay the same single fixed price shipping cost. This component may have other applications within the Yamaha model range.