Jabsco Impeller Kit, Neoprene, 12-Blade, Key Drive, 2-9/16 x 1-5/8 x 5/8 in, Brass Insert
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Overview
The Jabsco 18948-0001-P is a replacement impeller kit for flexible impeller pumps used for engine cooling water, bilge, transfer, and other general-purpose marine pump duties. It uses a 12-blade neoprene impeller with a key-drive hub, a 2-9/16 in diameter, a 1-5/8 in width, a 5/8 in shaft diameter, and a brass insert, so the fit needs to match the pump and the impeller you are taking out.
On a boat, this is the kind of service part that matters most when raw-water flow starts to drop or when you are doing scheduled maintenance before the season. Neoprene suits engine cooling and general water-handling duties, and the keyed drive matters because it locks the impeller to the shaft rather than relying on friction alone.
For buyers replacing an existing impeller, the safest check is to match the blade count, outside diameter, width, shaft size, and drive style to the old part and pump model before ordering. Keeping a spare on board also makes sense for boats that run long distances, fish offshore, or depend on an engine cooling pump away from the dock.
Key features
- 12-blade neoprene impeller for raw-water engine cooling and other flexible impeller pump service where neoprene is the correct material
- Key-drive hub, which matters for pumps that require a keyed shaft connection
- 2-9/16 in outside diameter, 1-5/8 in width, and 5/8 in shaft diameter for fit checks before installation
- Brass insert in the hub
- Works as a replacement service part for many bronze flexible impeller pumps used on boats
- Useful as both planned maintenance stock and an onboard spare for emergency impeller changes
Compatibility and fit
This kit is a fit-driven purchase, not a universal impeller. Before installing it, compare the dimensions and the keyed hub to your current impeller, and confirm the pump is set up for a 12-blade neoprene impeller in this size. That matters more than brand names on the pump body, especially on older boats where pumps may have been changed at some point in the boat's life.
It is a practical match for owners servicing raw-water cooling pumps on inboard engines and for anyone maintaining flexible impeller pumps used for bilge, transfer, or general water movement where this size and material are specified. The right buyer is someone replacing the same impeller pattern already in service and wanting to restore pump output without changing the pump itself.
Installation and service
When changing an impeller, remove the end cover and pull the old impeller from the hub rather than prying against the pump body. Greasing the new impeller before installation helps it slide into the bore and gives added protection during the first prime. Once the cover seal is back in place and the cover is reinstalled, the pump is ready to go back into service.
Flexible impellers are wear items, so regular inspection is worth doing on any boat that sees heat, sand, silt, dry starts, or long engine hours. Replacing them on a schedule is usually easier than dealing with a loss of cooling water flow underway.
Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.
Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.
Delivery and tracking
Deliveries are handled by trusted carriers such as USPS, UPS, FedEx, and DHL. Estimated arrival times appear at checkout and depend on your location and the service you choose. These are estimates and can be affected by customs or carrier disruptions. A shipping confirmation with a tracking link is emailed when your order ships, and tracking may take up to 24 hours to update. You can also view tracking in your account.
Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.
Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.
Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.
To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.
We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.