Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 172-170 found under Cylinder Assembly H by Delco Moraine Div Of General. The National Stock Number assigned to this part is 2520004888063, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 172-170.