Fuel pump cross reference for Auto

oceaninabox

Seaman Apprentice
Joined
Sep 26, 2009
Messages
32
I have a '73 120hp 2.5L 4cyl engine. It takes a OMC 985603 Fuel pump or a Sierra# 18-7278. Does anyone know if there is a cross reference to be able to buy this at Napa or Autozone? Im sure it would be cheaper.
 

Fishermark

Vice Admiral
Joined
Oct 19, 2003
Messages
5,617
Re: Fuel pump cross reference for Auto

You can probably buy it at Napa - but buy the right marine pump - not an automotive one.

You might try here as well.
 

zbnutcase

Commander
Joined
Sep 19, 2009
Messages
2,055
Re: Fuel pump cross reference for Auto

Gotta be a marine pump! And Napa should be able to get you the Sierra one.
 

HT32BSX115

Supreme Mariner
Joined
Dec 8, 2005
Messages
10,083
Re: Fuel pump cross reference for Auto

You can also go to Autozone and/or Schucks/Kragen/Checker/Oreilly and ask to see their AIRTEX or MASTER catalog.
Airtex is the OEM for Mercruiser and just about ALL the marine fuel pumps and all the above can order them.
 

Aloysius

Chief Petty Officer
Joined
Aug 21, 2010
Messages
484
Re: Fuel pump cross reference for Auto

The marine pump will have a fitting to prevent fuel from a ruptured pump diaphragm from leaking into the bilge. DO NOT use an automotive pump!
 

boat127

Petty Officer 2nd Class
Joined
Apr 18, 2010
Messages
196
Re: Fuel pump cross reference for Auto

do not use an automotive pump as mentioned ablove or you could go kaboom and be killed or kill your family or boaters beside you and insurance willl NOT pay
 

thumpar

Admiral
Joined
Jun 21, 2007
Messages
6,138
Re: Fuel pump cross reference for Auto

Go to Napa. I will no longer shop at Autozone or Schucks after getting the run around all over town when they tell me the other store carries it. Always end up at Napa and they have it or will have in a a day or 2.
 

oceaninabox

Seaman Apprentice
Joined
Sep 26, 2009
Messages
32
Re: Fuel pump cross reference for Auto

Would I just tell Napa the Sierra/OMC part number? Thats what confused me a bit. When I called Autozone they didnt have a clue and I gave them the OMC/Merc/Sierra/Carter number and they still couldnt tell me if they could get it.
 

thumpar

Admiral
Joined
Jun 21, 2007
Messages
6,138
Re: Fuel pump cross reference for Auto

Napa part numbers are the same as sierra numbers. They just put the Napa name on it.
 
Top