Tohatsu Nissan 25C-40C Water Pump Kit 361-87322-0 Mercury 853792A07
361-87322-0
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25C–40C Water Pump Kit
Tohatsu 361-87322-0 | Mercury 853792A07
Complete aftermarket water-pump service kit for outboard lower units that use the Tohatsu 361-87322-0 / 361873220M component set. It restores the impeller, wear surfaces and sealing parts used to circulate cooling water.
Key Features
- ✔ Complete pump repair component set as pictured
- ✔ Replacement for Tohatsu/Nissan 361-87322-0 family
- ✔ Cross-reference for selected Mercury/Mariner 853792A07 applications
- ✔ Includes impeller, wear components, gaskets, key and fasteners shown
- ✔ Aftermarket service kit; not genuine Tohatsu or Mercury
Technical Specs
| Part type | Water pump repair kit |
| Tohatsu family | 361-87322-0 / 361873220M |
| Mercury family | 853792A1 / 853792A07 / 853792T01 |
| Engine systems | Specified 2-stroke and 4-stroke families |
| Supply type | Aftermarket replacement |
| 4Boats SKU | 361-87322-0 |
Compatibility / Fitment Guide
| Brand / engine | Verified model or serial family | Engine type |
|---|---|---|
| Tohatsu | M25C2, M25C3; M30A3, M30A4; M40C | 2-stroke |
| Nissan Marine | NS25C2/NS25C3; NS30A3/NS30A4; NS40C where the catalogue lists 361873220M | 2-stroke |
| Mercury / Mariner 25 SeaPro | 0R051710 and up | Tohatsu-built 4-stroke |
| Mercury 25 EFI / 30 EFI | 0R106999 and up | Tohatsu-built 4-stroke |
| Mercury 25 EFI Jet | 0R165086 and up | Tohatsu-built 4-stroke |
Final fitment test: confirm 361-87322-0/361873220M or 853792A07 in the serial-specific gear-housing diagram and compare every included gasket, plate, key and fastener with the removed parts.
Exclusions: do not infer fitment for every 25–40HP Tohatsu, Nissan, Mercury or Mariner. Later MFS25/MFS30 designs and unrelated Mercury-built lower units can use different kits.
Part Number Cross Reference
| Tohatsu / Nissan | 361-87322-0; 361873220M |
| Mercury / Mariner | 853792A1; 853792A07; 853792T01 |
| 4Boats SKU | 361-87322-0 |
Cross-reference is valid only where the engine parts catalogue lists this pump family; horsepower alone is insufficient.
Frequently Asked Questions
Is this a genuine OEM kit?
No. It is an aftermarket replacement kit.
Does it fit Tohatsu M25C3 and M30A4?
Yes, those two-stroke models are catalogue applications for 361873220M.
Why are Mercury four-strokes listed with Tohatsu two-strokes?
Selected Mercury 25/30HP four-strokes use a Tohatsu-built gearcase and cross-reference the same pump kit.
Is the complete housing included?
Only the parts visible in the product image are supplied. Compare the image with the parts required for your service.
Note: Use the engine service manual for lower-unit removal, impeller direction and tightening torques; test the cooling tell-tale immediately after installation.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
