Corsa Marine 4" Thru hull Exhaust tips Mercruiser Mercury
http://www.ebay.com/itm/131174863408...84.m1555.l2649
These are a very good quality Stainless Steel 4" Exhaust tips. They are all stainless steel with a high temp rubber coated flapper that makes them quite and provides a better seal.
They are sold by the pair
I recommend using a and set of inline flapper on all thru hull applications such as
http://www.ebay.com/itm/131174780276...84.m1555.l2649
You can call me direct if you like 860 five one six 3141
David