MerCruiser EFI Mpi Electric Fuel Pump 305 350 377 454 502 V8 861156A1

So far so good. This high pressure fuel pump was a exact match as far as I could tell. I'm writing this after using the boat multiple times and it is still running strong. I think the one I replace was gummed up after sitting all winter with ethanol gas in it. I started using the ethanol free gas to help this from happening again. There are some blogs and thread write-ups about how to loosen up a gummed fuel pump. The price was good on this, the dealer wanted $300. I put mine in a 2003 Tige 21i, with the 350 V8. I also had to replace the low pressure pump as well. The only reason I gave it 4 stars is I haven't used it enough to say you'll have years of problem free boating.

Plug and play. Works as described. We are now having issues with it. We can only part throttle, otherwise it leans out and backfires through the throttle body. I have changed everything around it, and no luck. I'm not getting the 40+ psi needed for tbi

Direct replacement for fuel pump on 2000 Mercruiser 454 7.4l EFI, direct fit and works as designed.

The hole in the brass outlet isn’t even centered on the fitting. Manufacturer defect right out the box

NLA from Mercruiser, this is perfect replacement

Speedy Delivery and Cheerful Return !! My Boat required a different Fuel Pump and they were very gracious !! Well I don't think they Laughed at Me !

How much psi does it put out

pump wasn't threaded so you could attach the fuel line. Beware buyers.