SKU: 71200060428

Water Pump Impeller Kit – Fits Mercury Marine 25-30 HP & Tohatsu/Nissan 25-40 HP (Replaces 853792A07, 361873220)

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Description

Water Pump Impeller Kit – Fits Mercury Marine 25-30 HP & Tohatsu/Nissan 25-40 HP (Replaces 853792A07, 361873220)Water Pump Impeller Kit Fits Mercury Marine 25 30 HP & Tohatsu Nissan 25 40 HP This comprehensive water pump repair kit is designed for a direct fit on Mercury Marine 25 30 HP 4 Stroke EFI engines (2002 and up). It also provides broad coverage for various Tohatsu and Nissan 25 40 HP 2 Stroke engines (1996 2005) and 25 30 HP 4 Stroke engines (2002 2017), restoring cooling system performance and reliability. This kit serves as a direct replacement for

Water Pump Impeller Kit – Fits Mercury Marine 25-30 HP & Tohatsu/Nissan 25-40 HP

This comprehensive water pump repair kit is designed for a direct fit on Mercury Marine 25-30 HP 4-Stroke EFI engines (2002 and up). It also provides broad coverage for various Tohatsu and Nissan 25-40 HP 2-Stroke engines (1996-2005) and 25-30 HP 4-Stroke engines (2002-2017), restoring cooling system performance and reliability.

This kit serves as a direct replacement for Mercury part numbers 853792A07, 853792A1, and 853792T01, as well as Tohatsu/Nissan parts 361-87322-0, 361873220M, and 361873220.

  • Installation Type: Direct OEM-style replacement.
  • Complete Assembly: Includes a new impeller, gaskets, wear plate, insert cup, and hardware.
  • Quality Construction: Made with a durable neoprene rubber impeller and marine-grade stainless steel components.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number
Mercury Marine 853792A07
Mercury Marine 853792A1
Mercury Marine 853792T01
Tohatsu / Nissan 361-87322-0
Tohatsu / Nissan 361873220M
Tohatsu / Nissan 361873220

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Confirm your engine model/year in the table below.

Mercury Marine

Brand Model Rated HP Stroke Years OEM Part No. Notes
Mercury Sea Pro 25 4-Stroke 0R051710 & Up 853792A07 -
Mercury EFI Standard 25 4-Stroke 0R106999 & Up 853792A07 -
Mercury EFI JET 25 4-Stroke 0R165086 & Up 853792A07 -
Mercury EFI Standard 30 4-Stroke 0R106999 & Up 853792A07 -

Tohatsu & Nissan

Brand Model Rated HP Stroke Years OEM Part No. Notes
Tohatsu M25C2 25 2-Stroke 1996-2005 361-87322-0 -
Tohatsu M25C3 25 2-Stroke 2002-2005 361-87322-0 -
Tohatsu M30A3 30 2-Stroke 1996-2002 361-87322-0 -
Tohatsu M30A4 30 2-Stroke 2002-2005 361-87322-0 -
Tohatsu M35C 35 2-Stroke 2002 361-87322-0 -
Tohatsu M40C 40 2-Stroke 1996-2004 361-87322-0 -
Nissan NS25C2 25 2-Stroke 1996-2002 361-87322-0 -
Nissan NS25C3 25 2-Stroke 2002-2005 361-87322-0 -
Nissan NS30A3 30 2-Stroke 1996-2002 361-87322-0 -
Nissan NS30A4 30 2-Stroke 2002-2005 361-87322-0 -
Nissan NS35C 35 2-Stroke 2002 361-87322-0 -
Nissan NS40C 40 2-Stroke 1996-2004 361-87322-0 -
Nissan NS40C2 40 2-Stroke 2002-2004 361-87322-0 -
Tohatsu/Nissan 4-Stroke Models 25-30 4-Stroke 2002-2017 361-87322-0 Specific models not detailed

Technical Specifications

Product Type Water Pump Impeller Repair Kit
Installation Direct OEM Replacement
Fuel Type Gasoline
Housing Material Marine-grade Neoprene Rubber Impeller, Non-asbestos Gasket, Stainless Steel Hardware
Housing Color Black (Impeller), Silver (Metal Components)
Weight 130 g (4.6 oz)
Warranty 1-year Manufacturer Warranty (Aftermarket)
Other Technical Attributes Produced in ISO9002-certified factory

Package Contents

  • 1 x Water Pump Impeller (345-65021-0/47-16154-1/161541)
  • 1 x Impeller Key (28-161582/348-65018)
  • 1 x Gasket (278-161602/348-65029-1)
  • 1 x Gasket (27-161582/348-65018-0)
  • 1 x Insert Cup (161572/348-65011-0)
  • 1 x Wear Plate (161592/348-65025-0)
  • 4 x Bolts & Washers (910103-565)

Installation Guide

  1. Safety First: Disconnect the battery and disable the ignition system before beginning.
  2. Access the Pump: Remove the lower unit (gearcase) from the outboard motor to access the water pump assembly.
  3. Disassemble Housing: Unbolt and remove the water pump housing, taking note of how the components are assembled.
  4. Remove Old Parts: Take out the old impeller, gaskets, wear plate, and insert cup. Clean all mating surfaces thoroughly.
  5. Install New Components: Install the new gasket, wear plate, and insert cup into the housing.
  6. Install Impeller: Slide the new impeller onto the driveshaft. Turn the shaft clockwise while pushing down to correctly orient the impeller vanes.
  7. Reassemble Housing: Reinstall the water pump housing and tighten the bolts to the manufacturer's specified torque.
  8. Reinstall Lower Unit: Reattach the lower unit to the engine, ensuring the driveshaft and shift shaft align correctly.
  9. Test Operation: Reconnect the battery. Start the engine in a water supply (using flushing muffs or in the water) and confirm that water is exiting the tell-tale port.

Troubleshooting & FAQ

How do I confirm this fits my engine?
The most reliable method is to match your engine's model and serial number against our compatibility tables. For Mercury engines, year ranges are often given by serial number breaks (e.g., "0R106999 & Up"). Cross-reference the OEM part number stamped on your old parts with those listed in our cross-reference table.

What are the signs of a failing water pump impeller?
Common signs include a weak or non-existent water stream from the "tell-tale" outlet, engine overheating alarms, or visible cracks, stiffness, or missing blades on the old impeller upon inspection.

How often should I replace the water pump impeller?
As a critical preventative maintenance item, most manufacturers recommend replacing the impeller every 1-2 years or every 100-200 hours of operation, whichever comes first. This interval can be shorter if you frequently operate in sandy, silty, or saltwater conditions.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (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 (unused & 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.
  • 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.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 71200060428

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Crystal
New York, US
★★★★★ 5
Great product
Color: Black, Size: 4 Panel-88''
Love this
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Reviewed in the United States on April 23, 2026
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Behind the Dream
Port Orchard, US
★★★★★ 5
Five Stars. Exactly what I needed for my space
Color: Black
I live in a small NYC apartment, so creating separation without making things feel cramped is always a challenge. This divider did the job perfectly. It was easy to set up right out of the box. No complicated instructions, just unfold and place it where you need it. The size is great. It actually gives real coverage and privacy without looking bulky. The fabric looks clean and professional, and the black color blends well with everything. I’ve used it to separate my workspace from my living area, and it instantly made my place feel more organized. It’s also lightweight enough to move around, but still sturdy enough to stay in place. If you need a simple, affordable way to create privacy or sections in a small space, this is a solid choice.
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Reviewed in the United States on March 28, 2026
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Rob Cardwell
San Leandro, US
★★★★★ 5
Works for a smaller area
Color: Black
Easy to assemble. Fast delivery
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Reviewed in the United States on June 1, 2026
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Joseph Mowery
Battle Creek, US
★★★★★ 3
Below expectation
Color: Black
Not quite what I was expecting but it can be used
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Reviewed in the United States on May 6, 2026
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Christopher Atchison
Omaha, US
★★★★★ 4
Good
Color: Grey
Works as it should, but one of the brackets on the leg broke while setting up. Super glue is holding it in just fine.
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Reviewed in the United States on March 5, 2026

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