Valve Stem Complete less Needle and Holder - E1518
These are new old stock and have a bit of rust on them from sitting on a shelf for decades. Comes with a packing from the factory. Fits stoves 3F, 3H, 413B, 413C, 413D, 418, 418B, 419, 420, 371, 371A. Does not come with the needle. If your stove has been updated to a later valve style then this would not fit.
The needle and holder for this is part number 471-2381 HERE.
A whole new valve and gen would be part number 413B6601. That is the valve that fits the 413E and 413G stoves.