Fuel pump replacement aftermarket indmar 556014

So the original was discontinued right?  The new one doesn't have a return line and you bought the "generic" version, instead of Indmar for almost $400 cheaper?  Nice.  I think this trick applies to more boats than you think.  

Yes the original pump was discontinued and they sell a conversion.  The conversion was still being manufactured when I replaced mine.   I would have been down last summer for 3+weeks so I researched the pumps specifics.  The p5000 was same psi and flow, from information I could find, and I figured as long as the pressure regulator could dump back to tank I'd be ok.  

So the return line goes to the pump and not the tank?  For some reason I thought it dumped back into the tank...good to know this works.  I've been keeping an eye on fuel pumps since it seems like it happens all the time to boats of this age.

I know this thread is old, but being someone with experience in automotive racing and boating, I started researching the fuel pump in Indmar’s s495117 conversion kit and found some with the pierburg brand pump and some kits without. They all had the same part number, but the kit that doesn’t use the pierburg brand pump uses the Walbro gsl392 pump. The number is on the pump Indmar sales for over $300, but walbro sales it for $98. Fuel pump pt# gsl392, fitting pt# 128-3041, Order the copper sealing washers with the fitting, $ .99 each. Just have to check the box. Your not supposed to run anything smaller than a 30 micron filter pre pump, but no matter where I look all I can find for our 1/2” fuel lines is 10 micron or 149 micron. I have used the 10 micron wix 33299, or Napa 3299 for 5 years now with no issues. This is my first post and I don’t know if links are allowed, so if it gets deleted I understand. But here is the link to the manufacturers online store for the fuel pump. https://walbrofuelpumps.com/walbro-gsl392-inline-fuel-255lph-pump.html

7 hours ago, Thehappytexan said:

Your not supposed to run anything smaller than a 30 micron filter pre pump, but no matter where I look all I can find for our 1/2” fuel lines is 10 micron or 149 micron. I have used the 10 micron wix 33299, or Napa 3299 for 5 years now with no issues.

Good catch on that pump! 

Me too on the filter, 3 years now on a 10 micron filter and absolutely no issues, but then again the Yahama spin-on filter I use is 10 micron but also 90gph capable.  Just a hunch but I'm guessing that the restriction was for the smaller filters being used and could hinder flow if slightly clogged and/or at high demand and subsequently induce vapor lock on start?  Either way, not an issue at all for me now that I added the secondary fuel pump. 

Kinda of wondering how this would apply to mine boat . Have a 2001 Moomba with the 5.7 Indmar that has the Low pressure and High pressure pumps in the same location . Had a issue this weekend with them thats why im asking ., I have 2 fuel lines one from the low side and high side back to the tank . My brother is suggesting remove the low end side all together ....he stated the low side pumps are garbage and not really needed cause more problems than good . He also suggested buying a Holley Pump and relocating the pump to back by the tank and running new steel line to the motor 

Tylerstrop, on your boat, both pumps are technically low pressure pumps. The short and fat Carter pump is there to supply sufficient fuel volume at around 7 psi to the injection pump which should hold 12 to 15 psi on your TBI engine. One big advantage with running the carter pump is that it’s made to pull fuel, it’s a lift pump. Cummins used that same pump mounted to a billet aluminum plate to lift diesel fuel from semi tanks to the engine for several years. They work very well. If you were to put a 100 micron filter before the lift pump and a 10 micron after it, that would be a nice setup. Just make sure the filters flow at least 2 to 3 gallons per minute. I have a high flow 10 micron filter setup I’m putting together for a fall project coming and will post an update when it’s time. 

@Thehappytexan thank you brother !! Well explained ! Appreciate the info !

On 6/14/2019 at 1:06 AM, Thehappytexan said:

I know this thread is old, but being someone with experience in automotive racing and boating, I started researching the fuel pump in Indmar’s s495117 conversion kit and found some with the pierburg brand pump and some kits without. They all had the same part number, but the kit that doesn’t use the pierburg brand pump uses the Walbro gsl392 pump. The number is on the pump Indmar sales for over $300, but walbro sales it for $98. Fuel pump pt# gsl392, fitting pt# 128-3041, Order the copper sealing washers with the fitting, $ .99 each. Just have to check the box. Your not supposed to run anything smaller than a 30 micron filter pre pump, but no matter where I look all I can find for our 1/2” fuel lines is 10 micron or 149 micron. I have used the 10 micron wix 33299, or Napa 3299 for 5 years now with no issues. This is my first post and I don’t know if links are allowed, so if it gets deleted I understand. But here is the link to the manufacturers online store for the fuel pump. https://walbrofuelpumps.com/walbro-gsl392-inline-fuel-255lph-pump.html

So I want to order this pump as the savings are huge but I am not sure about the 128-3041 fitting.  Its a metric female fitting.  My original pump has an inverter 45° 3/8-tube fitting.  The nominal female thread actually measures to be 5/8-18.  When you installed the metric fitting did you have any problems? Leaks? Thanks!