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Flexible Rubber Water Pump Impeller 17370-0001 – 12 Blade Neoprene 95 mm Double Flat – Fits CAT 3N4859

Vendor: JLM Marine
Availability: In Stock
Product Type: Flexible Rubber Impeller
$69.60
$69.60
Subtotal: $69.60

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Flexible Rubber Water Pump Impeller 17370-0001 – 12 Blade Neoprene 95 mm Double Flat – Fits CAT 3N4859

Flexible Rubber Water Pump Impeller 17370-0001 – 12 Blade Neoprene 95 mm Double Flat – Fits CAT 3N4859

$69.60

How to Match This Part

This is a flexible rubber raw water pump impeller. It sits inside the pump housing behind the cover plate and is driven by a double-flat shaft. It replaces the primary original part number Jabsco 17370-0001, and is also supplied against JMP 8300-01, DJ 088-1201 and CAT 3N4859 / 3N1888 / FP3N4859.

Match this part by checking your engine in this order:
1. Original impeller part number (stamped on the old impeller or listed in the pump section of your parts catalog)
2. Blade count (this listing is 12 blades)
3. Drive type (this listing is a double-flat hub, 25 mm bore — not the 12-spline 8301-01)
4. Width (this listing is about 89 mm wide, not the 63 mm 95 mm-diameter family)

Identify it physically before ordering. This impeller has twelve vanes moulded in black neoprene around a machined brass double-flat insert. JMP 8300-01 is 95 mm diameter, 88.8 mm width and 25 mm bore. It is not interchangeable with spline-drive 8301-01 / 17936-0001 of the same envelope, or with 63 mm-wide 8101-01 of the same diameter.

  • ✓ Primary OEM: Jabsco 17370-0001
  • ✓ Product form: 12-blade neoprene impeller, brass double-flat insert, 88.8 mm width, 25 mm bore
  • ✓ Fitment: part number, then drive type, then width

Part Number Cross-Reference

Use this table to confirm equivalent part numbers. JMP 8300-01K is a kit number. This listing is the impeller only.

Type Brand Part Number Notes
OEM Jabsco Pump 17370-0001 Primary reference. 12-blade neoprene, double-flat
OEM JMP Pump 8300-01 JMP 12-blade double-flat equivalent
OEM DJ Pump 088-1201 12-blade double-flat equivalent
OEM Cummins Onan 217308 Cummins / Onan raw-water pump impeller
OEM Cummins Onan 3008503 Source-sheet Cummins equivalent
OEM Caterpillar 3N4859 CAT raw-water pump impeller
OEM Caterpillar 3N1888 CAT equivalent
OEM Caterpillar FP3N4859 Source-sheet CAT number
Other brand Industry interchange 206-1 Source-sheet other-brand number
Other brand Industry interchange 888-206M Source-sheet other-brand number for this SKU

Compatible Engine Models

Confirm the original impeller number and count twelve blades on a 25 mm double-flat hub about 89 mm wide. Do not assume every CAT 3406, Cummins V903 or Detroit Diesel uses this part.

Brand Engine / Pump Model Original Part No. Notes
Jabsco / JMP / DJ Pumps specified for 17370-0001, 8300-01 or 088-1201 17370-0001, 8300-01, 088-1201 12-blade, double-flat, 95 × 88.8 × 25 mm
Cummins Onan Engines whose parts list calls for 217308 or 3008503 217308, 3008503 Match the original number rather than a V903 dump
Caterpillar Engines whose parts list calls for 3N4859, 3N1888 or FP3N4859 3N4859, 3N1888, FP3N4859 Match the original number rather than a 3406 family dump

Technical Specifications

Specification Value
Part type Flexible rubber impeller, raw water pump
Number of blades 12
Impeller diameter (A) 95 mm
Impeller width / depth (B) 88.8 mm
Shaft bore diameter (C) 25 mm
Insert / drive type Double-flat
Insert material Machined brass
Vane material Neoprene rubber

Package Contents

This listing is for the impeller only, as shown in the impeller in the product images. Please refer to the part number cross-reference table to confirm component details.

Cover gasket, O-ring and lubricant are not included. JMP 8300-01K adds gasket GAK0008, O-ring ORG0015 and lubricant; kit extras are not included.

Installation Guide

  1. 1 Stop the engine, let it cool, and close the raw water seacock so water cannot enter the boat while the pump is open.
  2. 2 Remove the cover plate screws and lift off the cover. Keep the screws and the old gasket together so you can compare the seal size when reassembling.
  3. 3 Note the double-flat orientation, then grip the brass insert and pull the old impeller straight off. Recover any broken vane pieces from the downstream cooling circuit before continuing.
  4. 4 Clean the housing bore and the wear plate, and inspect them for scoring. Apply a marine-grade impeller lubricant, glycerine or soapy water to the bore and the new vanes. Do not use petroleum-based grease, which attacks neoprene.
  5. 5 Align the double flats in the brass insert with the pump shaft, then press the impeller in while turning the shaft in the normal direction of rotation so all twelve vanes lay over the same way.
  6. 6 Refit the cover plate with a serviceable gasket, tighten the screws evenly in a crisscross pattern, open the seacock, then start the engine and confirm a solid stream of cooling water and no leaks at the cover.

Note: Professional installation is recommended to ensure safety and optimal performance.

Troubleshooting & FAQ

How do I confirm this fits my engine? +

Start from the original impeller number. If the old part is Jabsco 17370-0001, JMP 8300-01, DJ 088-1201, Cummins 217308 / 3008503, or CAT 3N4859 / 3N1888 / FP3N4859, and the brass hub is a 25 mm double-flat about 89 mm wide on a 95 mm 12-blade impeller, this part is the correct size.

Is this the same as 17936-0001 / 8301-01? +

No. Those numbers are 12-blade impellers of the same 95 × 88.8 mm envelope with a 12-spline hub. This listing is double-flat. Match the drive type before ordering.

Is this the same as 8201-01? +

No. 8201-01 is a 9-blade double-flat impeller of the same envelope. This listing is 12 blades. Count blades before ordering.

Will this fit every CAT 3406, Cummins V903 or Detroit Diesel 8V92? +

No. Only pumps whose parts list calls for 17370-0001, 8300-01, 3N4859 or 217308. Match the original number rather than an engine family.

Is this a kit or just the impeller? +

This listing is the impeller only. JMP 8300-01K is a kit number that adds a gasket and O-ring. Photos of this SKU show the impeller on its own.

Is this an OEM or aftermarket part? +

This listing is an aftermarket replacement part and is not an OEM component. We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost? +

We offer fast global shipping, typically 5–15 days worldwide, and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy? +

This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window for unused items in original condition; please see our policy page or reach out for instructions.

Important Notes

  • Verify that the product images and specifications match your original part. If discrepancies exist, even if your model is listed, do not proceed with the purchase.
  • This product is an aftermarket replacement part and is not an OEM component.
  • The impeller is supplied on its own. Cover seals and lubricant must be ordered separately if your service procedure requires them.
  • This is a 12-blade, 95 mm double-flat impeller, 88.8 mm wide with a 25 mm bore. It will not fit spline-drive 8301-01 or 9-blade 8201-01 of the same envelope.
  • Never run the pump dry. Even a few seconds without water will damage the neoprene vanes.
  • Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

  • Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
  • Fast Global Shipping: Free delivery worldwide in 5–15 days.
  • Direct from Manufacturer: Competitive pricing without compromising quality.

Podemos enviar a prácticamente cualquier dirección del mundo con envío gratuito disponible para la mayoría de las regiones.

Para nuestros clientes típicos de EE. UU. y Canadá , nuestros plazos de envío son los siguientes:

  • Amazon FBA : los pedidos se entregarán dentro de 1-5 días hábiles después de realizar el pedido (durante ciertos períodos especiales como promociones importantes, Navidad, etc., el tiempo de entrega de Amazon FBA puede verse afectado).
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Al realizar un pedido, estimaremos las fechas de envío y entrega según la disponibilidad de sus artículos y las opciones de envío que elija. Dependiendo del proveedor de envío que elija, las fechas de envío estimadas podrían aparecer en la página de presupuestos de envío.

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Como proveedor directo, evitamos intermediarios, lo que nos permite ofrecer precios competitivos sin comprometer la calidad. Este enfoque no solo promueve la rentabilidad, sino que también garantiza que nuestros clientes reciban el mejor valor directamente del proveedor.

Estamos entusiasmados de ampliar nuestro alcance a través de canales minoristas, llevando nuestra experiencia y compromiso con la calidad directamente a los propietarios de embarcaciones y entusiastas de todo el mundo.

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