Engine Cooling Water Pump – Fits Yanmar 6LP Series Marine Engines (Replaces 119773-42502)
Engine Cooling Water Pump – Fits Yanmar 6LP Series Marine Engines (Replaces 119773-42502) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Engine Cooling Water Pump – Fits Yanmar 6LP Series Marine Engines (...
Product Details
This is a direct-fit Engine Cooling Water Pump – Fits Yanmar 6LP Series Marine Engines, designed for reliable raw water circulation in Yanmar 6LP(A)-DTE(P), 6LP(A)-STE(P), 6LPA-STP2, 6LPA-DTZP, and 6LPA-STZP series diesel engines. Its robust bronze construction ensures durability and corrosion resistance in marine environments.
It serves as a direct replacement for Yanmar part numbers 119773-42502, 119773-42501, 119773-42500, and 119773-42650, as well as Johnson equivalents 10-24493-02 and 10-24493.
- Provides a direct bolt-on replacement for simplified installation.
- Features a self-priming design that can pass small solids without clogging.
- Includes the necessary drive gear for a complete swap.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yanmar | 119773-42502 |
| Yanmar | 119773-42501 |
| Yanmar | 119773-42500 |
| Yanmar | 119773-42650 |
| Johnson | 10-24493-02 |
| Johnson | 10-24493 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This pump is designed for specific Yanmar 6LP series marine diesel engines.
| Brand | Model | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|
| Yanmar | 6LP(A)-DTE(P) | 4-Stroke | 119773-42502 | Direct cooling application |
| Yanmar | 6LP(A)-STE(P) | 4-Stroke | 119773-42502 | Direct cooling application |
| Yanmar | 6LPA-STP2 | 4-Stroke | 119773-42502 | Direct cooling application |
| Yanmar | 6LPA-DTZP | 4-Stroke | 119773-42502 | Direct cooling application |
| Yanmar | 6LPA-STZP | 4-Stroke | 119773-42502 | Direct cooling application |
Technical Specs
- Product Type
- Engine Cooling Seawater Pump
- Installation
- Direct bolt-on replacement
- Connection
- Hose ports (inlet and outlet)
- Housing Material
- Bronze
- Housing Color
- Bronze/copper (natural)
- Dimensions
- 29.0 cm L x 19.5 cm W x 20.0 cm H
- Weight
- 4.55 kg (10 lbs)
- Fitting Type
- Hose ports
- Key Feature
- Self-priming, includes drive gear
- Warranty
- 90 days to 1 year (varies by manufacturer)
What’s in the Box
- 1 x Engine Cooling Seawater Pump (119773-42502)
Installation Notes
- Shut off the engine, close the raw water seacock, and let the unit cool completely.
- Place a catch pan under the pump to manage any spilled coolant.
- Loosen the hose clamps and carefully disconnect the inlet and outlet hoses.
- Remove the mounting bolts securing the old pump to the engine block.
- Carefully extract the old pump. You may need to gently pry it loose.
- Thoroughly clean the engine mounting surface, removing any old gasket material or sealant.
- Align the new pump, ensuring the drive gear meshes correctly, and install the new mounting bolts.
- Tighten the bolts to the manufacturer's specified torque.
- Reconnect the hoses and secure them with the clamps.
- Open the raw water seacock.
- Start the engine and immediately check for any leaks around the pump body and hose connections.
- Monitor the engine temperature to ensure proper cooling system operation.
Troubleshooting & FAQ
How do I know if this pump fits my engine?
This pump fits specific Yanmar 6LP series engines. The best way to confirm is to cross-reference your existing pump’s part number with those listed in our Part Number Matrix. Also, verify your engine model is in the compatibility table.
What are the signs of a failing seawater pump?
Common symptoms include engine overheating at idle or low speeds, visible water leaks from the pump seals or housing, a rattling or grinding noise from the pump assembly, or a cracked or damaged pump body. A reduced flow of water from the exhaust outlet is another key indicator.
How often should the impeller be inspected or replaced?
As a general rule, the flexible impeller inside the pump should be inspected annually and replaced every 1 to 2 years, or more frequently depending on usage hours and water conditions (e.g., sandy or silty water).
Can this pump run dry?
No. Seawater pumps use water for lubrication. Running the pump dry, even for a short period, can destroy the flexible impeller and potentially damage the pump seals or housing. Always ensure a steady water supply by opening the seacock before starting the engine.
What is the difference between this and the OEM part?
This is an aftermarket replacement part, not an original equipment manufacturer (OEM) component. It is engineered to meet or exceed OEM specifications for fit, form, and function, using comparable high-quality materials like a bronze housing for excellent corrosion resistance.
Is any special maintenance required?
Beyond regular impeller inspection and replacement, ensure hose connections remain tight and free of leaks. After operating in salt water, it's good practice to flush the engine with fresh water if possible to extend the life of all cooling system components.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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