Water Pump Impeller Kit – Fits Onan 4.0 KW, 6.5 KW, 7.5 KW Generator (Replaces 131-0160, 131-0165, 131-0267)
Water Pump Impeller Kit – Fits Onan 4.0 KW, 6.5 KW, 7.5 KW Generator (Replaces 131-0160, 131-0165, 131-0267) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
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Water Pump Impeller Kit – Fits Onan 4.0 KW, 6.5 KW, 7.5 KW Generato...
Water Pump Impeller Kit – Fits Onan 4.0 KW, 6.5 KW, 7.5 KW Generator (Replaces 131-0160, 131-0165, 131-0267) is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Impeller Kit is engineered for Onan marine generators, including MCCK 4.0 KW, MCCK 6.5 KW, MDJE 7.5 KW, MDJA, MDJB, and MDJC models that are equipped with a 3-screw cover water pump. It provides a reliable solution for maintaining optimal engine cooling performance.
This kit serves as a direct replacement for Onan part numbers 131-0160, 131-0165, and 131-0267, as well as Globe Marine 1014.
- Engineered specifically as a replacement for 3-screw cover water pumps.
- Constructed from durable CR (Chloroprene Rubber) for longevity in marine environments.
- Includes one impeller and one gasket for a complete installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number |
|---|---|
| Onan | 131-0160, 131-0165, 131-0267 |
| Globe Marine | 1014 |
Engine & Model Compatibility
Confirm your engine model in the table below to ensure accurate fitment.
Onan Marine Generators: Designed for models using pump casting #P2563. Check your pump housing to verify compatibility, as this impeller will not fit 4-screw cover pumps.
| Brand | Model | Rated KW | OEM Part No. | Notes |
|---|---|---|---|---|
| Onan | MCCK | 4.0 | 131-0165, 131-0267 | Pump Casting #P2563 |
| Onan | MCCK | 6.5 | 131-0165, 131-0267 | Pump Casting #P2563 |
| Onan | MDJE | 7.5 | 131-0165, 131-0267 | Pump Casting #P2563 |
| Onan | MDJA | 131-0165, 131-0267 | Pump Casting #P2563 | |
| Onan | MDJB | 131-0165, 131-0267 | Pump Casting #P2563 | |
| Onan | MDJC | 131-0165, 131-0267 | Pump Casting #P2563 |
Technical Specs
- Product Type
- Water Pump Impeller Kit
- Installation
- Replacement for 3-screw cover water pumps only
- Impeller Material
- CR (Chloroprene Rubber) with Brass Insert
- Shaft Type
- D Shaft
- Impeller Blades
- 6
- Dimensions
- Shaft Width: 5/16" (8mm), Impeller Width: 3/4" (19mm), Overall Diameter: 1-9/16" (39mm)
- Weight
- 1.76 ounces (49.9g)
- Compatibility
- Onan Marine Generators with 3-screw cover water pumps
- Notes
- Not compatible with 4-screw cover model pumps
What’s in the Box
- 1 x Impeller (replaces 131-0160)
- 1 x Gasket (replaces 131-0161)
Installation Notes
For a safe installation, first disconnect the generator's power supply and close the raw water intake seacock. Next, remove the three screws on the water pump cover plate. Carefully extract the old impeller, taking note of the blade direction. Lubricate the new impeller with a water-based lubricant, install it with a twisting motion in the direction of engine rotation, and replace the cover with the new gasket. Open the seacock and check for leaks after starting the generator.
Troubleshooting & FAQ
How do I know if this impeller fits my Onan generator?
This impeller is designed for Onan generators with a 3-screw water pump cover. Please verify your pump model and compare it to the compatible models listed (MCCK, MDJA, MDJB, MDJC, MDJE). It is not compatible with 4-screw cover pumps.
What are the signs of a failing impeller?
Common symptoms include the generator overheating, reduced water flow from the exhaust port, and visible signs of wear such as cracked, stiff, or missing impeller blades upon inspection.
How often should I replace the impeller?
For preventative maintenance, it is recommended to inspect the impeller annually and replace it every one to two years, depending on operating hours, water conditions (salt vs. fresh), and periods of disuse.
Is the pump cover gasket included?
Yes, a new gasket (equivalent to Onan 131-0161) is included in the kit to ensure a proper seal upon reassembly.
What is the difference between an OEM part and a Sea Sierra aftermarket part?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials and manufactured in an ISO 9002 facility, where it is batch-inspected for consistency and quality.
How fast is shipping?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free for most orders, and expedited options are available at checkout where applicable.
What is the warranty and return policy?
This product is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for unused parts in their original condition. See our policy page or reach out for instructions.
Safety & Important Info
- Verify images and specifications against 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 quality control.
Payment & Security
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