Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 704 81197 found under Sensor Engine Coolant Temperature Emission Control by M B Companies Inc. The National Stock Number assigned to this part is 2990013005209, 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 704 81197.