Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 902.108 found under Valve Positive Crankcase Ventila by Acme North America Corp. The National Stock Number assigned to this part is 2990012436393, and the Federal Supply Class is 2990 Miscellaneous Engine Accessories Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 902.108.