Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 18H150SH TYPE EFI found under Pulley Timing Belt by Martin Sprocket And Gear Inc. The National Stock Number assigned to this part is 3020015280407, and the Federal Supply Class is 3020 Gear Pulley Sprocket And Transmission Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 18H150SH TYPE EFI.