Jabsco 11818-0003 Replacement Pump Head for 11810 Series Pumps
When a hardworking utility pump starts losing pressure or leaking around the shaft, the problem is usually the pump head, not the motor. The Jabsco 11818-0003 is a complete bronze replacement pump head built specifically for the 11810 Series of self-priming utility pumps, giving owners a way to restore full performance without buying an entirely new unit. It arrives with a Nitrile impeller, a lip-type shaft seal, and a replaceable wearplate already fitted, so the swap is straightforward for anyone comfortable with basic hand tools.
This isn't just a marine part. The 11810 Series shows up wherever someone needs a portable, self-priming pump that can shrug off small debris and keep flowing without pulsing — bait tank circulation on a boat, coolant recirculation on a machine shop floor, drum filling at a food or beverage facility, or draining a flooded basement at home. Because the pump head bolts directly onto the existing motor, the 11818-0003 lets that same pump keep earning its keep across marine, industrial, agricultural, and household jobs for years longer.
Choosing a Nitrile impeller version matters if the pump is moving anything oil-based, since Nitrile holds up better against petroleum products than a standard neoprene impeller. Combined with a bronze body that resists corrosion and a lip seal that keeps the motor shaft dry, this replacement head is built to bring an aging or worn 11810 Series pump back to like-new output.
Key Features:
- Complete bronze pump head assembly, sold without motor
- Nitrile impeller for compatibility with oil-based liquids
- Lip-type shaft seal to protect the motor from moisture intrusion
- Replaceable wearplate for long-term serviceability
- Non-pulsating, self-priming flow design
- Handles hard and soft solids without clogging
- Direct bolt-on fit for compatible 11810 Series pump units
Applications:
- Marine: bait tank circulation, oil transfer, wash-down, utility dock pumping
- Industrial: coolant circulation on machine tools, filling systems, utility shop pumping
- Food, beverage, and dairy: cooling water circulation, refrigeration coil defrosting, drum filling, equipment wash-down
- Home and property: emptying tubs, pools, or basements, garden and lawn watering, water softener recharge
- Agriculture and contracting: general liquid transfer and portable pumping tasks
Specifications:
- Part Number: 11818-0003
- Compatible With: Jabsco 11810 Series pumps (including 11810-0003, 11810-0013, and related variants)
- Body Material: Bronze
- Impeller Material: Nitrile
- Shaft Seal: Lip type
- Wearplate: Replaceable
- Port Size: 1/2" NPT internal thread, 3/4" garden hose external thread
- Motor Included: No — pump head only
FAQs
Q: Does the Jabsco 11818-0003 include a motor?
No. The 11818-0003 is a pump head only. It's designed to bolt onto the existing motor of a compatible 11810 Series pump, so the motor itself is not included.
Q: What impeller comes installed on the 11818-0003?
It comes fitted with a Nitrile impeller, which is a better match than neoprene for pumping oil-based liquids and holds up well across a broad temperature range.
Q: Can this pump head be used outside of marine applications?
Yes. The 11810 Series pump head is used across industrial, food and beverage, agricultural, and residential settings wherever a portable, self-priming utility pump is needed.
Q: Is the 11818-0003 compatible with every 11810 Series pump?
It's built to fit the standard 11810 Series lineup, but exact fitment can vary by sub-model, so it's worth confirming the specific model number on the existing pump before ordering.
Q: What does replacing the pump head fix compared to replacing the whole pump?
Replacing the pump head restores flow, seals, and impeller performance while reusing the existing motor, which is typically the more durable and expensive component — making it a lower-cost way to extend the life of the pump.
CLRMarine
