This is an NOS AC-Delco fuel vapor canister. These canisters just don't seem to turn up NOS much anymore. I purchased it for my 1979 Riviera many years ago, and wound up never using it. I believe it will also fit other years of Riviera and Buick of the 1979-1986 vintage. This canister is NOT available in the aftermarket, and this AC-Delco part number was obsoleted many years ago. I found it on the shelf of a Buick dealer many years ago, and put it away for future use. This NOS canister is in its original box. The heavy plastic shrink wrap is still on the canister....only the top of the wrap has been peeled back, so I could take a picture of the top hose connections. You'll want to look at the top of your current canister carefully, and check to make sure the hose connections are identical. This NOS canister I have is set up like this: Left hose connection is marked "Purge" on the top of the canister. The center hose connection is marked "Fuel Tank". The right connection is really a valve, with two hose connections (small hose and larger hose) on it. This valve is marked "Carb Bowl" on the top of the canister. The price for this NOS, in-the-box AC-Delco fuel vapor canister is $95, plus the shipping. This is a good part to have on the shelf, if you plan to keep and drive your car for some years. Your personal or business check, or a money order are all fine for payment. Thanks. John
