Yanmar 119574-42502-J Sea Water Cooling Pump for 6LY2
The Yanmar 119574-42502-J is the genuine sea water cooling pump for 6LY2 Series engines. It is the pump that pulls raw water in through the seacock and strainer and drives it through the heat exchanger and out with the exhaust, which is the whole basis of how the engine keeps its temperature under control.
There comes a point where rebuilding stops making sense. A pump body that has corroded and pitted around the impeller bore will not seal against a new impeller anywhere; a shaft that is scored where the seal runs will cut a new seal in hours; and a bearing that has taken salt water is on borrowed time whatever else is done. When two or three of those are true at once, a complete pump is the honest answer and it goes back on the engine in an afternoon.
Key Features
- Genuine Yanmar replacement sea water cooling pump
- Fits 6LY2 Series engines
- Engine driven, no separate power supply needed
- Restores full raw water flow to the cooling circuit
- One per pump
- Direct fit replacement using the original mounting
Applications
- 6LY2 Series engines
- Replacing a pump with a corroded or pitted body
- Repairing a pump whose bearing has taken salt water
- Restoring cooling after repeated overheat alarms
- Repower and engine refit work
- Keeping a complete spare aboard for long passages
Specifications
- Brand: Yanmar
- Manufacturer: Yanmar Marine
- Manufacturer Part Number: 119574-42502-J
- Part Type: Sea Water Cooling Pump
- Fits: 6LY2 Series engines
- Quantity Used: One per pump
- Condition: New
Frequently Asked Questions
Q: How do I know the pump needs replacing rather than rebuilding?
When more than one thing is wrong at once - a pitted body, a scored shaft and a rough bearing together. Any one of those is a repair; all three mean the pump has reached the end of its service life.
Q: What are the warning signs before it fails?
A weak exhaust stream, salt crusting or a weep at the pump drain, a rumble or growl that changes with engine speed, and temperatures that creep up under load.
Q: Should I replace the gasket when fitting it?
Always. The mounting joint has been disturbed, the old gasket has taken a set, and a leak there is both a coolant loss and a corrosion problem.
Q: Is a spare pump worth carrying?
On a boat that goes offshore, yes. A pump can be changed at sea in reasonable conditions, while a body that has failed cannot be repaired with what is aboard.
Not sure this is the right part? Send us a Picture of the Pump Plate on your pump and the CLR Marine team will confirm the correct sea water cooling pump.
CLRMarine
