164 V6 12v/24v exhaust gaskets
In case this helps someone, I have two versions of this gasket. One is an IAP-sourced fiber composition gasket, and one is a solid copper version. Both have three bolt holes.
64155 - IAP label pasted over Fiat/Lancia/Alfa package
0060510816 - original label for fiber composition gasket
0605108160 - Ricambi Originali packaged solid copper gasket
I also have an Alfa Romeo orange-packaged solid copper gasket for the 164L joint between flex tubes and the front of the cat converter. This is 0060510307 and is smaller diameter than the 164S part. I thought I had a 164S part, too, but can't find it. Oh, well. I sure hope this helps someone somewhere somewhen. I stumbled across this thread on a Google search looking for confirmation of some part number to application information. When I discovered that two versions of the rear cat gasket existed made of different materials, I thought someone else might be subject to confusion and I hope to clear that up for whoever it might be.
Michael
Another apples and oranges type story as 164B/L uses one 3-bolt hole usually copper gasket at rear of cat. The LS uses steel donut type gasket for rear of cat same as used on all models for rear muffler connection. The 164S cat has two rear outlets and each one uses different gasket one is a 3-bolt gasket and other one is a sealing ring of some sort.
Alfa ex gasket part numbers from engine to back of car:
60506636 ex manifold to head gasket 164 12v V6 (6 ea)
60510306 ex pipe to manifold gasket (2 each) 164B/L/S
60510307 two pipe cat inlet copper gasket 164B/L
60805010 or 60571802 two pipe cat inlet gasket 164S
60510816 3-bolt hole rear cat outlet gasket 164B/L
82473321 R/R cat outlet gasket 164S
82420455 L/R cat outlet sealing ring 164S
82407147 sealing ring rear muffler to center muffler 164 all and 24v rear cat outlet
60573536 ex manifold to head 24v (6 ea)
60654239 gasket ex pipe to manifold (2 ea) 164LS/Q 24v
60573540 front cat inlet gasket (2 ea) 164LS/Q 24v