Boat Fuel Gas Tank Sender Indicator Sending Unit Gasket Screws 5-Hole Marine Kit Flywheel Housing you'll have to steal some

you'll have to steal some from your original

Just compare against the stamping on yours

8L V6 229 175hp

Item Description Mercury Part Number 20029 Transfer Port Cover

The Part Number of Shifter Lock  is  203596

Boat Fuel Gas Tank Sender Indicator Sending Unit Gasket Screws 5-Hole Marine Kit Flywheel Housing you'll have to steal someMoeller 5 Hole Gasket Kit for use with various Marine Fuel Senders (Electric Mechanical Diesel Reed Switches) using this style bolt pattern gasket. General Application Compatibility Found on pretty much you standard fuel tank that uses a fuel sender. They kind of just used a common gasket between all of them. The screws should work for your application, but in some cases you may need to re use your original screws. Includes some self sealing washers