Jabsco Impeller Kit, 12 Blade, Neoprene, Key Drive, 2-7/16 in Diameter, 5/8 in Shaft Diameter
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Overview
The Jabsco 18838-0001-P is a 12-blade neoprene replacement impeller kit for keyed-drive bronze flexible impeller pumps. It measures 2-7/16 in in diameter, 1-1/4 in in depth, uses a 5/8 in shaft diameter, and has a brass insert at the hub, so it should be matched to the impeller already in your pump rather than ordered by diameter alone.
This size is used in marine engine-cooling pumps and in some bilge, transfer, and general water-service pumps that use a bronze flexible impeller design. On a boat, it is the kind of service part that makes sense to replace on schedule and keep aboard as a spare, because a damaged impeller can cut water flow quickly and turn into a cooling problem just as fast.
Key features
- 12-blade neoprene impeller for keyed-drive bronze flexible impeller pumps
- Fit-critical dimensions: 2-7/16 in outside diameter, 1-1/4 in depth, and 5/8 in shaft diameter
- Brass insert at the hub
- Used in many marine pump applications including engine cooling, bilge duty, transfer duty, and general onboard water movement where this size is specified
- A practical spare to carry aboard when uninterrupted raw-water flow matters
Compatibility and fit
Fit comes down to four checks: outside diameter, impeller depth, shaft size, and drive style. This impeller uses a keyed drive, so it is not a substitute for spline-drive or pin-drive versions even when the outside diameter looks close.
Before ordering, compare the old impeller or the pump service data with the 2-7/16 in diameter, 1-1/4 in depth, 5/8 in shaft diameter, and 12-blade layout. That is the safest way to confirm the impeller will seat correctly in the housing and prime the pump as expected.
Installation and maintenance
When you change the impeller, pull the old one by the hub with the proper removal tool or with pliers that will not mark the pump body. Screwdrivers can scar the pump face and create leak paths at the cover.
Grease the new impeller lightly before installation so it slides into the bore more easily and has some protection during initial prime. After the cover is back on, check for normal prime and water flow right away. For boats that rely on raw-water cooling, replacing the impeller on a regular schedule is a lot easier than dealing with a failure underway.
Use on board
This part suits owners maintaining raw-water engine-cooling pumps and other bronze flexible impeller pumps that already call for this size and keyed hub pattern. It also makes sense as a spare for coastal cruising, fishing boats, and longer runs where loss of pump output can stop the day quickly.
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.
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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.