Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S6135-64041 found under Cooler Lubricating Oil Engine by Sikorsky Aircraft Corporation. The National Stock Number assigned to this part is 2935007050560, and the Federal Supply Class is 2935 Engine System Cooling Components Aircraft Prime Moving. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S6135-64041.