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

This water pump impeller kit is designed for specific Onan marine generators, including MCCK 4.0 KW, MCCK 6.5 KW, MDJE 7.5 KW, MDJA, MDJB, and MDJC models equipped with 3-screw cover water pumps.

It serves as a direct replacement for Onan part numbers 131-0160, 131-0165, and 131-0267, as well as Globe Marine 1014.

• Engineered for Onan marine generators with 3-screw cover pumps (Casting #P2563).
• Constructed from durable CR (Chloroprene Rubber) with a brass insert for reliable performance.
• Kit includes one impeller and one gasket for a complete service.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 1 x Impeller (131-0160)
• 1 x Gasket (131-0161)

Installation Guide

1. Turn off the generator and disconnect the power source.
2. Close the raw water intake seacock.
3. Place an absorbent towel under the pump to catch any spilled water.
4. Remove the three screws securing the water pump cover.
5. Carefully remove the old impeller. You may need pliers to grip the hub.
6. Clean the inside of the pump housing and cover plate, removing any old gasket material or debris.
7. Lightly lubricate the new impeller and the inside of the housing with a suitable marine lubricant.
8. Install the new impeller, turning the shaft to bend the blades in the correct rotational direction.
9. Install the new gasket on the cover plate.
10. Reinstall the cover and tighten the screws evenly.
11. Open the seacock, restart the generator, and check for leaks.

Troubleshooting & FAQ

How do I confirm this impeller fits my Onan generator?
Confirm your generator model is listed (e.g., MCCK, MDJE). Most importantly, verify that your water pump has a 3-screw cover, as this kit is not compatible with 4-screw models. Cross-referencing the pump casting number P2563 is also a reliable method.

What is the most important installation detail?
Ensure you are replacing an impeller in a 3-screw cover pump. This kit will not fit or function in a 4-screw cover pump. Attempting to install it in the wrong pump can lead to damage and overheating.

What is the impeller made of?
The impeller is made from high-quality CR (Chloroprene Rubber), known for its durability and resistance to the marine environment. The central hub is a brass insert for a secure fit on the D-shaped shaft.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.