Olds 403 fuel pump is different to all others. The pump with gasket for the 6.6 ltr Oldsmobile 403 found in many 1977-79 Pontiac's.

It is Located on the USA passenger side.

You want a quality FUEL PUMP.. these are Normally GM AC Delco brand..nothing we can get it more original or known higher quality. They cost about 20% more then some we find but know the reliability and stick with it in preference.

???? How to ID if you have a 403 Olds or Pontiac 301/ 350/ 400/ 455 or Chevy V8 engine.. simple..easy to remember too....

• Pontiac & Olds.. both have the starter motor is on the LHS.. 
• Fuel pump for the OLDS 403 is on the RHS (US passenger side) for all 403 Olds engines...
• Fuel pump on the Pontiac V8.. is on the LHS.. then its a Pontiac engine ok....!  Pontiac Starters are on the LHS also
• Chevy's .. have BOTH the starter AND Fuel pump on the ..RHS. the USA Passenger side.