Crusader 21140 replacement parts

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Fuel Pump - 18-7270 - Sierra
Limited Sale Price: $229.90
Save: $102.25
(30% Off $332.15)
Part # 18-7270 ValueShip™ Eligible
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Includes mounting gasket

Replaces OEM part #
  • CRUSADER 21140

( Flange I.D. # 41417, M73019 )
For: GM ( V-8 ) 305, 350, 400 ( 5.75 - 7 PSI )

How much of a difference will it make using a sierra 18-7268 fuel pump rated at 5.25 - 6.5 psi compared to using a Sierra -18-7270 fuel pump rated on a GM 350 crusader marine engine? will it effect overal speed and operational performance?
the technicians at Sierra have said that the two will perform exactly the same, there are no performance differences.
Will this fuel pump work on a Cursader165 3.8 v6?
Hi Bryan- we have contacted Sierra and have been told that this fuel pump part #18-7270 will work with Crusader 165 3.8 v6 engine.
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