Jabsco Impeller Kit, 3-3/4 in Diameter x 2-1/2 in Depth, 1 in Shaft Diameter, Nitrile, 9-Blade, Single Flat Drive, Brass Insert

Overview

The Jabsco 836-0003-P is a nitrile replacement impeller for flexible impeller pumps that use a 9-blade rotor measuring 3-3/4 in (95 mm) in diameter, 2-1/2 in (63.5 mm) wide, with a 1 in (25.4 mm) shaft diameter and a brass insert. It is the size many owners need when servicing bronze flexible impeller pumps used for engine cooling, bilge duty, transfer work, and other general-purpose pumping jobs on board.

The nitrile compound matters when the pump handles water that may carry oil or diesel residue, or other heavily contaminated liquids. That makes this version more relevant where the fluid is not consistently clean, as long as the pump calls for this exact impeller size and material.

Key features

• 9-blade impeller with a 3-3/4 in outside diameter, 2-1/2 in width, and 1 in shaft diameter
• Nitrile construction for pumps that handle water, oily liquids, or contaminated water
• Brass insert at the hub
• Fits many bronze flexible impeller pumps when the blade count, diameter, width, shaft size, and hub details match the original impeller
• Useful as a scheduled service spare for pumps in engine cooling, bilge, transfer, and general onboard pumping service

Compatibility and fit

Before ordering, match the old impeller or pump data to the 9-blade layout, 3-3/4 in outside diameter, 2-1/2 in width, and 1 in shaft diameter. Those measurements are the quickest way to confirm fit, especially when several impellers look similar at a glance but use a different depth or hub arrangement.

This impeller is a good match for owners replacing the same nitrile configuration already specified in their pump, particularly on boats where bilge or transfer water may include oil contamination. For raw-water systems and other clean-water service, the right compound should still be confirmed against the pump requirement before installation.

Installation and maintenance

When it is time to replace the impeller, remove the end cover screws and pull the old impeller by the hub with an impeller puller or pliers. Avoid using screwdrivers against the pump body, since that can mark the housing face and create leak paths at the cover.

Greasing the new impeller before installation helps it slide into the bore and gives it protection during initial prime. Keeping a spare on board is sensible maintenance for any boat that depends on a flexible impeller pump for cooling or fluid transfer.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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