Fuel Pump 4.3GL High Pressure or Low Pressure

[dtescher]

I need a new fuel pump. Volvo Penta 4.3GL PLKD #4110144649

Napa has Low Pressure and a High Pressure Fuel Pumps listed with the same cross reference Volvo Penta part #3858261.
The high pressure is much cheaper than the low pressure. Which is the right one for my motor?

 

[Don S]

Re: Fuel Pump 4.3GL High Pressure or Low Pressure

3858261 is the proper Volvo part number for the pump. Not sure how Napa can have the same pn for a high and low. The volvo pump is low pressure. 5-8 psi.

 

[dtescher]

Re: Fuel Pump 4.3GL High Pressure or Low Pressure

I thought so. Thanks Don S. Unfortunately the low pressure is the moe expensive one.
But, I dont want to get the wrong one. Thanks again.

 

[dtescher]

Re: Fuel Pump 4.3GL High Pressure or Low Pressure

Update! I replaced the fuel pump with a low pressure Volvo Penta #3858261. It completely transformed the way my boat runs. I have been
searching the forums to find out why my boat backfires. Lately it has been surging and backfiring at WOT. Running rough at idle, Low power hole shot. Info I received on the forums was to check fuel filter, possible water in the fuel, a restriction in the fuel lines, carb issues. But, this was the fix and my motor has never run better. Hole shot amazing! In fact the first time after installing the pump I hit the throttle like I always did. It felt like the boat was going to flip over backwards. Awesome fix for around $150

 

[Don S]

Re: Fuel Pump 4.3GL High Pressure or Low Pressure

Did you look at the inlet screen of the old pump to see if it was plugged up?

 

[dtescher]

Re: Fuel Pump 4.3GL High Pressure or Low Pressure

Yes. It wasn't plugged. Also, it was getting power but not working to capacity.