Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C4PM1538 1 found under Trunnion Oil Cooler by Bombardier Aerospace. The National Stock Number assigned to this part is 1560004762610, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C4PM1538 1.