SKU: 84597047674

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

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Description

Water Pump Repair Kit – Fits Mercury/Tohatsu/Nissan 25-40 HP (Replaces 361873220, 853792A07)Water Pump Repair Kit Fits Mercury Tohatsu Nissan 25 40 HP (Replaces 361873220, 853792A07) This water pump repair kit is designed for Mercury Marine 25 30 HP 4 Stroke EFI engines (2002 and up). It also fits a range of Tohatsu and Nissan 25 40 HP 2 Stroke engines (1996 2005) and 25 30 HP 4 Stroke engines (2002 2017). This kit serves as a direct replacement for Mercury part numbers 853792A07, 853792A1, and 853792T01. For Tohatsu and Nissan, it replaces

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

This water pump repair kit is designed for Mercury Marine 25-30 HP 4-Stroke EFI engines (2002 and up). It also fits a range of Tohatsu and Nissan 25-40 HP 2-Stroke engines (1996-2005) and 25-30 HP 4-Stroke engines (2002-2017).

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

  • Installation: Direct OEM Replacement
  • Material: Manufactured with marine-grade materials to meet OEM specifications.
  • Quality: Produced in an ISO9002 certified factory to ensure reliable performance.

Part Number Cross-Reference

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

Brand Part Number
Mercury 853792A07
Mercury 853792A1
Mercury 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/Nissan M25C2, NS25C2 25 2-Stroke 1996-2005 361-87322-0 -
Tohatsu/Nissan M25C3, NS25C3 25 2-Stroke 2002-2005 361-87322-0 -
Tohatsu/Nissan M30A3, NS30A3 30 2-Stroke 1996-2002 361-87322-0 -
Tohatsu/Nissan NS35C, M35 35 2-Stroke 2002 361-87322-0 -
Tohatsu/Nissan NS40C, NS40C2, M40C 40 2-Stroke 1996-2004 361-87322-0 -
Tohatsu/Nissan 4-Stroke Models 25-30 4-Stroke 2002-2017 361-87322-0 -

Technical Specifications

Specification Value
Product Type Water Pump Repair Kit
Installation Direct OEM Replacement
Fuel Type Gasoline
Housing Material Marine-grade Materials (OEM Specification)
Warranty Standard Manufacturer Warranty
Other Technical Attributes Produced in ISO9002 certified factory

Package Contents

  • Water Pump Housing
  • Impeller
  • Gaskets
  • O-rings
  • Hardware/Fasteners

Explosion Diagram

Installation Guide

Always consult your engine's service manual before beginning work. Professional installation is recommended.

  1. Disconnect the negative battery cable to prevent accidental starting.
  2. Place a drain pan under the lower unit and remove the gearcase lubricant drain screw to drain the oil.
  3. Remove the bolts securing the lower unit (gearcase) to the outboard's upper housing.
  4. Carefully disconnect the shift shaft linkage if it does not separate automatically.
  5. Lower and remove the gearcase from the driveshaft housing to access the water pump.
  6. Unbolt and remove the old water pump housing, impeller, and wear plate. Note the orientation of the impeller fins.
  7. Thoroughly clean all mating surfaces, removing any old gasket material or sealant.
  8. Install the new gaskets, wear plate, key, and impeller. Turn the driveshaft clockwise to seat the impeller fins correctly inside the new housing.
  9. Secure the new water pump housing with the provided hardware, tightening bolts to the manufacturer's specified torque.
  10. Raise the lower unit back into position, aligning the driveshaft, water tube, and shift shaft. Reconnect the shift linkage.
  11. Reinstall the mounting bolts and torque them to specification. Refill the gearcase with the correct marine lubricant.
  12. Reconnect the battery. Test the engine in water, ensuring a steady stream of water from the tell-tale port.

Troubleshooting & FAQ

Q: How can I be sure this kit will fit my specific engine?
A: Please review the compatible engine tables on this page. For Mercury engines, it is critical to verify your engine's serial number starts with the ranges listed (e.g., 0R106999 & Up). For Tohatsu/Nissan, match your model and year. Cross-referencing your existing part number with our list is the best way to guarantee a match.

Q: What are the common symptoms of a failing water pump that would require this kit?
A: The most common sign is engine overheating at idle or low speeds. You may also notice a weak or non-existent stream of water from the "tell-tale" indicator port on your outboard.

Q: How often should I replace my water pump impeller and components?
A: As a general rule, the impeller should be inspected annually and replaced every 1-2 seasons or every 100-200 hours of use, depending on operating conditions (e.g., saltwater vs. freshwater). Refer to your owner's manual for specific maintenance intervals.

Q: OEM vs. Aftermarket?
A: 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.

Q: How fast do you ship and how much does it cost?
A: 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.

Q: What is your warranty and return policy?
A: 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: 84597047674

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