Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 312001 REV A IT. NO. 6 found under Manifold Air Exhaust Emission by Tri Tec Manufacturing Llc. The National Stock Number assigned to this part is 2990016657232, 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 312001 REV A IT. NO. 6.