Per researchers notes cage (1k1f3) is the oem for this item
No other part numbers with same form, fit, and function found.
A fitting that forms an angle of less than 180 degrees (3.142 radians) from the straight flow. It has flange connections on both ends designed to connect with another flange connection, or a compression type mounting pad. It may have side and/or heel inlet(s).
NSN 6130-01-105-4663
NSN 5930-01-250-1549
NSN 6320-01-583-6809
NSN 5960-00-809-6652
NSN 6105-01-462-0140
NSN 5925-00-723-9826
NSN 6105-00-427-9615
NSN 5965-00-153-5216
NSN 5950-01-147-4816
NSN 5910-01-164-1527
NSN 6150-01-129-6489
NSN 6645-00-155-2398