Flexible Rubber Water Pump Impeller 18327-0001 – 12 Blade Neoprene 65 mm Key Drive – Fits JMP 7352-01
Flexible Rubber Water Pump Impeller 18327-0001 – 12 Blade Neoprene 65 mm Key Drive – Fits JMP 7352-01
Flexible Rubber Water Pump Impeller 18327-0001 – 12 Blade Neoprene 65 mm Key Drive – Fits JMP 7352-01
Flexible Rubber Water Pump Impeller 18327-0001 – 12 Blade Neoprene 65 mm Key Drive – Fits JMP 7352-01
Flexible Rubber Water Pump Impeller 18327-0001 – 12 Blade Neoprene 65 mm Key Drive – Fits JMP 7352-01
Flexible Rubber Water Pump Impeller 18327-0001 – 12 Blade Neoprene 65 mm Key Drive – Fits JMP 7352-01
Flexible Rubber Water Pump Impeller 18327-0001 – 12 Blade Neoprene 65 mm Key Drive – Fits JMP 7352-01
Flexible Rubber Water Pump Impeller 18327-0001 – 12 Blade Neoprene 65 mm Key Drive – Fits JMP 7352-01
Flexible Rubber Water Pump Impeller 18327-0001 – 12 Blade Neoprene 65 mm Key Drive – Fits JMP 7352-01
Flexible Rubber Water Pump Impeller 18327-0001 – 12 Blade Neoprene 65 mm Key Drive – Fits JMP 7352-01

Flexible Rubber Water Pump Impeller 18327-0001 – 12 Blade Neoprene 65 mm Key Drive – Fits JMP 7352-01

Vendor: JLM Marine
Availability: In Stock
Product Type: Flexible Rubber Impeller
$33.60
$33.60
Subtotal: $33.60

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Flexible Rubber Water Pump Impeller 18327-0001 – 12 Blade Neoprene 65 mm Key Drive – Fits JMP 7352-01

Flexible Rubber Water Pump Impeller 18327-0001 – 12 Blade Neoprene 65 mm Key Drive – Fits JMP 7352-01

$33.60
Descripción

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 keyed shaft. It replaces the primary original part number Jabsco 18327-0001, and is also supplied against JMP 7352-01, DJ 08-36-1201 and Sherwood 15000.

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, not the 8-blade 4598-0001)
3. Drive type (this listing is a key-drive hub, not a spline)
4. Pump model (cast or labelled on the pump body)

Identify it physically before ordering. This impeller has twelve vanes moulded in black neoprene around a machined brass key-drive insert. JMP 7352-01 is 65 mm diameter, 51 mm width and 15.8 mm (5/8 in.) bore. Count the blades on the old impeller: Jabsco 4598-0001 / DJ 09-46-0801 share the same outer size but have eight blades and are a different part. It is not interchangeable with 8-blade spline 920-0001 or 12-blade 41.5 mm key-drive 18948-0001.

  • ✓ Primary OEM: Jabsco 18327-0001
  • ✓ Product form: 12-blade neoprene impeller, brass key-drive insert, 51 mm width
  • ✓ Fitment: part number, then blade count, then drive type

Part Number Cross-Reference

Use this table to confirm equivalent part numbers. Sherwood 15000K and JMP 7352-01K are kit numbers. This listing is the impeller only. Product photos may show gaskets; those extras are not included.

Type Brand Part Number Notes
OEM Jabsco Pump 18327-0001 Primary reference. 12-blade key drive
OEM Jabsco Pump 4598-0001 Source-sheet number. Same outer size, 8 blades — count blades; not this listing
OEM JMP Pump 7352-01 Bare impeller. JMP 7352-01K is a kit
OEM DJ Pump 08-36-1201 12-blade key-drive equivalent
OEM DJ Pump 09-46-0801 Source-sheet 8-blade number. Same outer size as 4598-0001; not this 12-blade listing
OEM Sherwood Pump 15000 Bare impeller
OEM Sherwood Pump 15000K Source-sheet kit number. This listing does not include gasket or O-ring
OEM Cummins / Onan 3349498, 3393862, 3916720, 47-853126 Source-sheet numbers. Catalog also writes 3349198 for 18327-0001; 47-853126 is Mercruiser on JMP
Other brand Industry interchange J-301 Source-sheet other-brand number
Other brand Industry interchange 888-301 Source-sheet other-brand number for this SKU

Compatible Engine Models

Confirm the original impeller number and count twelve blades on a 51 mm key-drive hub. Do not assume every Cummins 4B or Mercruiser diesel uses this part.

Brand Engine / Pump Model Original Part No. Notes
Jabsco / Sherwood / JMP Pumps specified for 18327-0001, 15000 or 7352-01 18327-0001, 15000, 7352-01 12-blade, key drive, 65 × 51 × 15.8 mm
Cummins Engines whose parts list calls for 3916720 or 3349498 3916720, 3349498 Match the original number. Do not dump 4BT families
Mercury Mercruiser Pumps specified for 47-853126 47-853126 JMP 7352-01 equivalent. Match the original number

Technical Specifications

Specification Value
Part type Flexible rubber impeller, raw water pump
Number of blades 12
Impeller diameter (A) 65 mm (2-9/16 in.)
Impeller width / depth (B) 51 mm (2 in.)
Shaft bore diameter (C) 15.8 mm (5/8 in.)
Insert / drive type Key drive
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 plate gaskets, O-ring and lubricant are not included. JMP 7352-01K and Sherwood 15000K add those service parts. If a photo of this SKU shows gaskets, they are catalog extras, not part of this listing.

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 key 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 keyway in the brass insert with the pump shaft key, 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 18327-0001, JMP 7352-01, DJ 08-36-1201, Sherwood 15000 or Cummins 3916720, and the brass hub is a key drive about 51 mm wide on a 65 mm 12-blade impeller, this part is the correct size.

Is this the same as Jabsco 4598-0001 / DJ 09-46-0801? +

No. Those numbers are on the source sheet because they share the same 65 × 51 mm key-drive envelope, but they are 8-blade impellers. Count the blades before ordering.

Is this the same as Jabsco 18948-0001 / JMP 7300-01? +

No. 18948-0001 is also 12-blade 65 mm key drive, but it is 41.5 mm wide. This listing is 51 mm wide.

Will this fit every Cummins 4B or Mercruiser diesel? +

No. Only engines whose parts list calls for 18327-0001, 7352-01, 3916720 or 47-853126. Match the original number and count twelve blades.

What are the signs that my impeller needs replacing? +

The usual symptoms are a weak or intermittent stream of cooling water, rising engine temperature, and vanes that are cracked, flattened, hardened or missing on inspection. Flexible impellers are a wear item; inspect on a fixed service interval rather than waiting for failure.

Is this a kit or just the impeller? +

This listing is the impeller only. JMP 7352-01K and Sherwood 15000K are kit numbers that add gaskets, an O-ring and lubricant. Photos that show those extras are catalog shots.

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, 65 mm key-drive impeller, 51 mm wide. It will not fit 8-blade 4598-0001, spline 920-0001, or 41.5 mm 18948-0001.
  • 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.
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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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