For #505 I have a 2GM ...no idea what a 2QM is.
6-days before the last weekend regatta of the season I replaced the whole exhaust assembly. (Takes 35 min of motoring to get out to the Gulf. In Newport I used to sail on/off mooring.)
In Florida fortunately UPS Ground is next day delivery.
Here are the complete assembly part numbers:
1 of 104214-13521 Mixing Elbow @ $105
1 of 128270-13610 Elbow @ 116
1 of 104214-13580 Nipple (Left/Right hand) @ $30
1 of 124000-13201 Exhaust Gasket @$5
Above from Yanmar but I still had to get a
1 Brass street elbow 3/8 @ $4.50
1 Brass 1/2 in hose barb x 3/8 @$3 from Ace.
Yanmar now has territory selling restrictions so I couldn't use my supplier up in RI.
Vic
#505