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Seaflo Macerator Pump for RVs and Boats - 12 GPM - 1-1/2" Inlet - 1" Outlet - 12V

Seaflo Macerator Pump for RVs and Boats - 12 GPM - 1-1/2" Inlet - 1" Outlet - 12V

Item # SE64FR
Our Price: $88.53
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Easily empty your black water tank, fish box, or livewell with this self-priming macerator pump. 4-Blade chopper reduces risk of clogs. Pushes waste through hose (not included) for cleaner dumping. Great Prices for the best rv water pump from Seaflo. Seaflo Macerator Pump for RVs and Boats - 12 GPM - 1-1/2" Inlet - 1" Outlet - 12V part number SE64FR can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (14)
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  • Videos (2)
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Seaflo RV Water Pump - SE64FR

  • Macerator Pump
  • 12V
  • 12.0 gpm
  • Seaflo

Easily empty your black water tank, fish box, or livewell with this self-priming macerator pump. 4-Blade chopper reduces risk of clogs. Pushes waste through hose (not included) for cleaner dumping.


  • Macerator pump lets you easily empty your black water tank, fish box, or livewell
    • Helps prevent smells in your boat's bilge
    • Makes dumping your RV's tank faster and more efficient
  • Stainless steel, 4-blade chopper reduces risk of clogging by grinding waste before pumping overboard
    • Perfect for fish scales and residual gunk
    • Cannot handle rags, feminine products, or hard objects
  • Thermally protected sensor allows the pump to run dry long enough to self-prime
    • Prevents overheating during priming and allows time to determine when the black water tank is empty
  • Capable of 5' lift when wet and 4' lift when dry
    • Does not require a trestle system for gravity drainage
    • Helps keep black water drainage tube clean by pushing waste through
  • Flexible rubber impeller is durable and helps create a pulseless flow
  • Anti-clogging mechanism lets you remove clogs without having to disconnect hoses
    • Rear cover plate removes, revealing a shaft that can be turned with a screwdriver
  • Manual function lets you use pump even if you lose power
  • Quiet operation - rubber feet help prevent vibration
  • Durable, powder coated housing and triple-sealed motor are corrosion resistant
  • Compatible with 12V DC systems
  • Easy, bolt-on installation
    • Mount near the tank for optimum performance


  • Overall dimensions: 11-3/16" long x 5" wide x 3-7/8" tall
  • Base dimensions: 3-1/8" long x 4-11/16" wide
  • Mounting dimensions: 2-5/16" long x 3-3/4" wide
  • Maximum power draw: 12 amps
  • Flow: 12 gallons per minute (GPM)
  • Ports:
    • Inlet: 1-1/2" male NPT and 1-1/2" hose barb
    • Outlet: 1" hose barb
  • 4-Year limited warranty

SFMP1-120-01 Sea Flow Macerator Pump for Boats and RVs - 12 GPM - 1-1/2" Inlet - 1" Outlet - 12V

Video of Seaflo Macerator Pump for RVs and Boats - 12 GPM - 1-1/2" Inlet - 1" Outlet - 12V

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Seaflo Boats and RVs Macerator Pump Review

What's up, everybody, Adam here, we're at the property. This is the lake that I like to fish in, and this is the boat I use the catch my fish. So we had a problem. And the problem is, this deck that we put in isn't really sealed the best. So when it starts raining and stuff, the boat starts to fill up with water. So basically what we had to do is literally back my car down here and pull it up off the shore because the drain plugs at the bottom in the back.

It took a while and I'd rather just not have to do that. So what we did was we put in a bilge pump. So this is the sea flow bilge pump. Basically what we did, we put this in here, grabbed some tubings, some hose clamps and a switch. So we can go from having water in the boat to having no water in the boat.

So let's see how it works. It's a lot easier. And it's actually more satisfying just to sit here and flip a switch and watch all that water go out. So this is just gonna give me to the trails or on the lake a lot faster, which is awesome. So basically work smarter, not harder, right And that's what the bilge pump is gonna do for me.

So you can either use this in a live well, you can use it with just getting water out of your boat. There's a lot of different applications that you can do. It is gonna be sealed. So keeping it out of the elements, isn't really something you need to do. So it's a sealed system and it primes on its own, which is nice.

And that's a decent amount of water flow about 12 gallons per minute. So if this thing's completely full, it'll probably only take a minute or two to get it all pumped out. And that gets me pretty pumped. Notice how we have a decent amount of stuff in our boat. Well, we don't really have to put like a screen on this hose or anything 'cause the inside of the pump has a chopper in there. So it's gonna kind of chop that up. If you're using it for a live well, it's gonna take care of all those fish scales and stuff like that. So you really don't have to protect it. It protects itself from the elements. It's a submersible pump. It really wanted to do it that way. But all in all, it's kind of a easy installation. You don't really have to worry about anything. You just put it where water is and it gets rid of it. Well, just like that. I mean, there's a little bit of water left in there, but that's not gonna make us sink. So that's really awesome. Literally took maybe 50 seconds, a little under a minute to get all that water out and trust me, there's a lot of water in there. So that's really nice. Yeah. So we can get out on the boat. That's literally what it all comes down to. That's why we have a boat. So this way we can just get on and catch some fish a little bit quicker. Our boat is gonna be run by 12 volts. So we wanna make sure that we're not pumping 115 or 120 volts of this thing. So 12 volt DC systems. And it's gonna pump 12 gallons per minute. So what kind of helps that happen is just a big inlet and outlet. So this is gonna wanna just prevent clogging from whatever's in your boat or whatever's in your RV's tank when it comes to your sewage and stuff like that. So we don't really want this thing to clog and it's not going to. It does have a steel blade, which is stainless steel. So it's gonna reduce the risk of that stuff really clumping it up, which is always a plus. And that's basically it. You just gotta bolt it on to install it. You gotta hook it up to a 12 volt DC battery. But one thing I would definitely do is just grab a switch just so you can turn it on and off whenever you want. Well, that's basically it. If you guys are like me and you like to work smarter not harder, grab yourself a pump for your boat so you don't gotta do what I did cause it's all about fishing. So that's what I'm gonna do. If you guys wanna see exactly how I installed it earlier today, you just stick around, we'll show you exactly how we did it. First things first, let's figure out where we're putting this thing. So I might get fancy with it later and actually mount it underneath our deck. But just so you guys can see what's going on, I'm just gonna mount it right here for right now. It does not come with any hardware. So you're gonna have to source that out yourself. Basically what I'm doing is just grabbing some self-tappers to run through. Okay. Nice and square. And just install all four sides. One thing I recommend is putting a switch in line with this. So, pretty much we're gonna go from the positive lead of the battery to one side of our switch and then the positive from our pump. I'll put a little terminal on here. Crimp it down. Just so we don't want this pump to pump all the time. It's just whenever it kind of rains. The deck that we put on this thing, it just doesn't keep all that water out. And the bad thing that we're used to doing is literally just pulling this boat out and then pulling the drain plug away in 10 minutes. I'd rather just get on the boat, flip a switch and let the water go. So that's what we're doing here. So with the switch, we're gonna be able to turn it on and off. I am gonna make this a lot cleaner later on, but just to give you an idea, we're basically going from positive lead of our battery to one side, and then the positive from our pump on the other. And if you are looking for a ring terminal or a switch, we have all that at each area. So we have a lot of different switches. I just went with this one just cause I knew I was gonna put on the outside of this battery box. So let me kind of line this stuff up, put it in, I hope you guys can see, but you get the gist of it. I'm gonna put this in, screw it down, And we're gonna be good to go. Now that the switch is all wired up, and again, I'm gonna make this pretty later. But now since it's off, we can go ahead and kind of connect these. It shouldn't turn on. So we'll see if I did it right or not. I'm confident. There's the negative side. And then for the positive side, it shouldn't turn on when I touch this. All right. So far so good. There we go. And now let's just make sure that it's working properly. Cool. One thing that we do not have for you guys on our website is the tubing. Just because it's a little big for what we usually use with water pumps. So for the outlet, we're gonna have about an inch inner diameter. For the inlet, we're gonna have an inch and a half inner diameter. So just go to your local hardware store and grab whatever pipe is gonna fit you. Depending on where you're putting it, It's gonna depend on how much you're really gonna need. But once you do that, you can get some hose clamps from us and basically just put it on just to make sure it's nice and tight and tighten them all down. Well, problem solved. Now I don't have to pull the boat out and take the drain plug out and it's gonna take about 10 minutes with this. It'll take a flip of the switch and maybe a minute or two to pump all this water out and then I'd get on the water. So that was the goal. And that's basically it for a look at the sea flow bilge pump for your boats, RVs or anything else..

Customer Satisfaction Score:

Customer Reviews

Seaflo Macerator Pump for RVs and Boats - 12 GPM - 1-1/2" Inlet - 1" Outlet - 12V - SE64FR

Average Customer Rating:  5.0 out of 5 stars   (14 Customer Reviews)

Easily empty your black water tank, fish box, or livewell with this self-priming macerator pump. 4-Blade chopper reduces risk of clogs. Pushes waste through hose (not included) for cleaner dumping.


I would recommend this product and etrailer. We needed to replace the macerator pump in our 2015 motorhome. My husband is a DIY so we checked around and found this one to be the best choice at the best price. Delivery was quick and the pump fit perfectly. We've purchased other products from etrailer and have always been more than satisfied. Thank you etrailer!


This pump is great, works as advertised.


The pump is an exact match to what I ordered, the service was great and on time as they told me.




Installation was easy and works great! Thank you!


Good price fast delivery. Everything as described.










See what our Experts say about this Seaflo RV Water Pump

  • What is Lift Height of Seaflo Macerator Pump for Boats and RV's SE64FR
    The Seaflo Macerator Pump for Boats and RVs, # SE64FR offers self-priming to a 5' lift when wet and 4' lift when dry.
    view full answer...
  • How To Hook Up the Seaflo Macerator Pump On An RV
    The Seaflo Macerator Pump for Boats and RVs part # SE64FR is designed for RV use among other things so it will work great for this. It can be installed a few different ways but tapping into the existing waste valve is most common. I can't really comment on the exact parts as this will vary widely by application but you are basically just tee'ing into the waste pipe before the valve. I was able to find some diagrams for this online using a quick google search like "RV Macerator Pump Plumbing". If...
    view full answer...
  • Replacement Macerator Pump
    We currently carry the Seaflo Macerator Pump for Boats and RVs, # SE64FR and while the amp draw and voltage will work for a replacement, I don't know if the physical fitment will based on your statement of tight fit. It is longer but less than an inch. From the specs available to me from an online search, the Pentair Shur-Flo 3200-001 macerator pump for RV's has dimensions of 10.6" x 4.9" x 3.8" while our option has overall dimensions of 11-3/16" long x 5" wide x 3-7/8" tall. So that...
    view full answer...

Do you have a question about this RV Water Pump?

Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Adam E
Installed by:
Adam E
Employee Chris R
Video Edited:
Chris R
Employee Alexander C
Written by:
Alexander C
Employee Sabrina W
Updated by:
Sabrina W

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