Fuel Filter Thumb Screw - 37H7920
Threaded OD: .30" Sells with rubber washer 37H7921
For use in bottom cup 37H8797
Part Number 27 & 28 in Diagram
Found normally in the following tractors. Check you application as fuel filter systems can be swapped around.
Leyland 344 384 255 262 462 270 272 472 282 482
Leyland Golden Harvest 502 602 604 702 704 802 804