25100-42540 Engine Water Pump is an aftermarket replacement water pump for Mitsubishi engines, including 4D56, 4D55, D4BB and other listed models. The water pump circulates coolant through the engine block and radiator, so the engine keeps its proper operating temperature and avoids overheating. It is supplied by LIONKITS as aftermarket new with a 3-month warranty.
25100-42540 Engine Water Pump Specifications
- Product Type: Engine Water Pump
- Part Number: 25100-42540, 25100-42541
- Compatible Brand: Mitsubishi
- Condition: Aftermarket new
- Product Weight: 2.100 kg/4.62 pounds(1 piece)
- Package Dimensions: 6.69 inch(L) x 6.69 inch(W) x6.30 inch(H)
- Warranty: 3 months
- Brand: LIONKITS
- Country of Origin: China
Mitsubishi Models Compatible with the 25100-42540 Engine Water Pump
- 4D56
- 4D55
- D4BB
Your model is not listed? Contact LIONKITS via live chat or email with your machine model and nameplate photo, and we will confirm compatibility.
What Does an Engine Water Pump Do?
The engine water pump keeps coolant circulating through the engine block, hoses and radiator. Coolant absorbs combustion heat and releases it in the radiator, so a healthy pump prevents engine overheating and protects the cylinder head and gaskets.
Signs the Water Pump Needs Replacing
- Engine overheating: the temperature gauge keeps rising or the high-temperature warning comes on.
- Coolant leaks: coolant puddles or deposits near the pump or its weep hole usually point to a worn shaft seal or gasket.
- Noise or shaft play: whining, grinding or a wobbling pulley can indicate a worn bearing.
- Dropping coolant level: if the system keeps losing coolant after refills, check the pump for a hidden leak.
If you notice any of these signs, inspect the pump promptly, because running an overheating engine can cause expensive damage.
How to Order and Install the 25100-42540 Engine Water Pump
- Confirm your machine model, engine model and the part number on your existing water pump before ordering.
- Send a photo of the machine or engine nameplate if you are not sure; LIONKITS will confirm fitment for you.
- After installation, refill the coolant, run the engine to operating temperature, check for leaks and recheck the coolant level once it has cooled.
- Inspect the drive belt tension and the coolant condition at the same time, because dirty coolant and over-tight belts shorten pump life.
Shipping, Payment and Support
- Dispatch and delivery: Your package will be sent within 2-3 business days, and another 3-7 business days to arrive in your country
- Payment methods: Credit Card, PayPal, T/T, Western Union
- Order tracking: A tracking number with a tracking link is sent by email once the order ships.
- Returns and refunds: If you encounter any issues with the product, please contact us promptly and provide detailed feedback. We will handle the return or exchange promptly
Frequently Asked Questions
What is the 25100-42540 Engine Water Pump?
The 25100-42540 Engine Water Pump is an aftermarket replacement water pump for Mitsubishi engines, supplied as aftermarket new under part numbers 25100-42540, 25100-42541.
Which Mitsubishi models does the 25100-42540 Engine Water Pump fit?
It is listed for 4D56, 4D55, D4BB. If you are unsure, send your machine nameplate to LIONKITS for confirmation.
How do I know my water pump is failing?
Common signs are engine overheating, coolant leaks near the pump, whining or grinding noise from the bearing, and a coolant level that keeps dropping.
What are the warranty and delivery terms for the 25100-42540 Engine Water Pump?
Warranty: 3 months. Your package will be sent within 2-3 business days, and another 3-7 business days to arrive in your country.
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