Jabsco 6400-0004 Bronze Flexible Impeller Pedestal Pump
Jabsco 6400-0004 Bronze Flexible Impeller Pedestal Pump — Product description
The Jabsco 6400-0004 is a pulley-driven bronze flexible impeller pump built for hard marine duty. It moves up to 62 gallons a minute at 1,750 RPM through 1-1/4-inch NPT ports, self-primes, and runs in either direction. Bronze body, 316 stainless shaft, neoprene impeller. Rig it for engine cooling, washdown, bilge duty, or general liquid transfer.
The Jabsco 6400-0004 is a workhorse. It's a bronze flexible impeller pedestal pump, pulley driven, the kind of pump you bolt down and forget about because it just keeps moving water year after year. There's no electric motor built in. You drive it off a belt and pulley from your engine or an external power source, and that's exactly why it holds up to continuous, heavy-duty work that would cook a small 12-volt pump in an afternoon.
At 1,750 RPM it moves up to 62 gallons a minute. Back it down to 1,500 RPM and you're still pushing around 44 gallons a minute. That's real volume. The 1-1/4-inch NPT internal ports feed it and clear it fast, and because it's self-priming it'll pull water up out of the bilge or over the side without you babying it. It draws a lift of about 10 feet, so mounting height isn't much of a worry on most boats. Straight hose runs help it breathe. Tight 90-degree elbows on the discharge will rob you of some flow, so plumb it as directly as you can.
The body is marine-grade bronze. The shaft is 316 stainless steel. Inside is a neoprene flexible impeller riding against a full cam, sealed with a carbon and ceramic mechanical seal. That combination is what lets this pump run in saltwater without corroding out on you, and it's why the 6400 series has been standard equipment on work boats and cruisers for decades. The impeller runs happily from 45 up to 180 degrees F, so warm raw water coming off an engine-cooling loop is no problem at all.
What's it for? Plenty. Engine cooling is the classic job, circulating raw water through a heat exchanger. But this same pump handles washdown duty, bilge pumping, deck wash, live-well circulation, and general liquid transfer around the boat or the dock. Because it runs in either direction, you can plumb the inlet and outlet whichever way your install wants. Shop and farm folks use these for moving water and thin liquids too, but on a boat it's a cooling and washdown pump first.
A couple of things to know before you rig it up. This is a bare pump. It ships as a pedestal-mount pump with an exposed shaft, ready for you to fit a pulley and belt, so you'll need a drive source and a solid mount. Keep continuous operating pressure at or below 30 psi and the pump will last. And like any flexible impeller pump, don't run it dry. The impeller leans on the pumped liquid for lubrication, so a dry run of more than a few seconds will chew it up fast. If you winterize or lay the boat up for the season, back the impeller out or at least crack the cover plate so it doesn't take a set over the off-season.
Service is refreshingly simple. The impeller is a wear item, and when flow drops off it's almost always the impeller. Pop the cover plate, pull the old one, slide a fresh neoprene impeller in with a little glycerin, and you're back in business in about fifteen minutes at the dock. The whole job needs nothing more than a screwdriver and a new impeller kit. Keep a spare impeller and a cover gasket aboard and you'll never be stuck out there.
Who's this for? Anyone repowering or rebuilding a raw-water cooling loop, anyone running a serious washdown setup on a center console or an express cruiser, and anyone who wants a belt-driven pump that outlasts the cheap alternatives. It's overkill for a small day boat, and honestly it should be, because when you need real flow and real durability this is the pump that delivers it. If you're not sure it's the right size for your engine or your washdown plumbing, give us a call. We'll help you match it up.
Key Features
- 62 GPM at 1,750 RPM (44.4 GPM at 1,500 RPM): real volume for engine cooling, washdown, and bilge duty.
- Marine-grade bronze body: stands up to years of saltwater service without corroding out.
- 316 stainless steel shaft: a strong, corrosion-resistant core for the impeller to ride on.
- Neoprene flexible impeller on a full cam: smooth, self-priming flow that pulls water up to a 10-foot lift.
- 1-1/4-inch NPT internal ports: high-flow inlet and outlet that thread straight into standard fittings.
- Carbon and ceramic mechanical seal: keeps the pumped liquid where it belongs and the shaft running clean.
- Runs in either direction: plumb the inlet and outlet whichever way your install needs.
- Pedestal mount with exposed shaft: bolt it down and drive it off a belt and pulley from your engine or power source.
- Self-priming design: no need to flood the pump before every start.
- Impeller rated 45 to 180 degrees F: handles warm raw-water engine-cooling loops with no trouble.
- Field-serviceable impeller: swap the wear part with a screwdriver in about fifteen minutes at the dock.
Why Buy from NVN Marine
- Authorized Jabsco reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | Jabsco 6400-0004 Bronze Flexible Impeller Pedestal Pump |
|---|---|
| Brand | Jabsco |
| Manufacturer Part Number | 6400-0004 |
| UPC | 671880004671 |
| Pump Type | Flexible impeller pedestal pump |
| Drive | Pulley driven (belt drive) |
| Flow Rate | 62 GPM at 1,750 RPM (44.4 GPM at 1,500 RPM) |
| Port Size | 1-1/4 inch NPT internal |
| Body Material | Bronze |
| Shaft Material | 316 stainless steel |
| Impeller Material | Neoprene |
| Cam | Full cam |
| Seal Type | Carbon/ceramic mechanical seal |
| Priming | Self-priming up to 10 ft lift |
| Rotation | Bi-directional |
| Max Continuous Pressure | 30 psi |
| Impeller Temperature Range | 45 to 180 degrees F |
| Mounting | Pedestal mount |
Frequently asked questions
Is the Jabsco 6400-0004 an electric pump?
No. It's a belt-driven pedestal pump. It ships as a bare pump with an exposed shaft, and you drive it off a pulley and belt from your engine or another power source. There's no built-in electric motor, which is a big part of why it holds up to continuous heavy-duty work.
How much water does it move?
Up to 62 gallons a minute at 1,750 RPM. At a slower 1,500 RPM it still pushes around 44 gallons a minute. Actual flow depends on your drive speed, hose routing, and lift.
What size are the ports?
They're 1-1/4-inch NPT internal ports on both the inlet and outlet, so they thread straight into standard 1-1/4-inch NPT fittings.
Is it self-priming?
Yes. It'll pull water up to about a 10-foot vertical lift on its own, so you don't have to flood the pump before starting it.
What's the pump made of?
A marine-grade bronze body with a 316 stainless steel shaft, a neoprene flexible impeller, a full cam, and a carbon and ceramic mechanical seal. That's a saltwater-ready build.
What jobs is it good for?
Engine raw-water cooling is the classic one. It also handles washdown, bilge pumping, deck wash, live-well circulation, and general liquid transfer on the boat or at the dock.
Can I run it in either direction?
Yes. The pump works in both directions, so you can plumb the inlet and outlet whichever way suits your install.
Can it run dry?
No, don't run it dry. The neoprene impeller relies on the pumped liquid for lubrication, and running dry for more than a few seconds will damage it. Make sure it's primed before it turns.
What pressure can it handle?
For continuous operation, keep the discharge pressure at or below 30 psi. Staying under that keeps the impeller and seal healthy for the long haul.
How do I service it?
The impeller is the main wear item. When flow drops, pull the cover plate, remove the old impeller, and slide in a fresh neoprene one with a little glycerin. It's a fifteen-minute job with a screwdriver. Keep a spare impeller and cover gasket aboard.
