Everyone routinely checks the aircraft fire-wall gascolator fuel screen or filter but the p/n: P15974 Carburetor Inlet Screen generally gets ignored! If your carburetor inlet screen has never been removed it is possible that the screen may be damaged or destroyed during the removal. Dissimilar metal corrosion of the screen bronze boss to the aluminum carburetor body can cause the screen bosses to seize in the carburetor if left in place over extended periods of time. If your carburetor’s screen has never been checked you would be wise to obtain a replacement screen prior to removing yours! As the gasket “is not a crush gasket” , I am also including the special Stromberg p/n: 174S22 Gasket with the screen assembly. The Pratt & Whitney engine maintenance manual calls for carburetor screen inspections to be done on a 50 hour basis making the inspection part of any 100 hour inspection!

Pratt & Whitney R-1340 engines are typically equipped with Bendix-Stromberg NAY9E1 float type carburetors which have the inlet screen constructed of a fine mesh bronze screen element soldered to bronze bosses. One boss on the screen assembly is threaded and equipped with a square head to facilitate removal by use of an 11/16 inch wrench or square head socket. The screen traps contaminants from the aircraft fuel system and engine driven pump, deteriorating hoses, etc. on the inner diameter of the screen.

The photograph (found on the internet) below shows P15974 Inlet Screen and Gasket in NAY9E1 carburetor.

Listing price is for one each P15974 Fuel Strainer/Screen assembly and one each 174S22 special Gasket in new surplus condition.

Even though it is in new condition, buyer is responsible to make sure that this part will work for their applications as there is no warranty or guarantee expressed or implied.

Please Note: Shipping Charges are non-refundable. Items are subject to a 20% restocking fee, on a case to case basis. If you purchase more than one item please wait for an updated invoice with adjusted shipping charges.

Thank You