Impeller Kit for Volvo Penta D4 Diesel Engines – Fits Multiple Marine Applications (Replaces 3588475, 877061-2)

Impeller Kit for Volvo Penta D4 Diesel Engines – Fits Multiple Marine Applications (Replaces 3588475, 877061-2)

This flexible impeller kit is an essential cooling system component designed for a wide range of Volvo Penta D4 diesel engines. It is compatible with the D4-180, D4-210, D4-225, D4-260, and D4-300 series engines, ensuring reliable performance for various marine applications.

As a direct replacement for multiple OEM part numbers, this kit provides a straightforward installation. It cross-references with Volvo Penta 3588475, 877061-2, 825941, and 801277, as well as parts from Jabsco, Caterpillar, Detroit Diesel, Mercruiser, Perkins, Yanmar, and Vetus.

• Complete Kit: Includes a 10-blade flexible impeller with a spline drive, plus the necessary gasket and O-rings for a full replacement.
• Durable Material: The impeller is made from high-quality neoprene, known for its robustness in marine environments.
• Installation Method: Designed for direct OEM replacement, facilitating a smooth maintenance process.

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.

JMP Marine Pump Applications

Technical Specifications

Package Contents

• 1 x Impeller (7426-01/17937-0001)
• 1 x Gasket (GAK0016)
• 1 x O-Ring (ORG0013)
• 1 x O-Ring (ORG0071)
• 2 x Screws (included with Volvo kit)

Installation Guide

1. Safety First: Ensure the engine is turned off and completely cool before starting. Close the seacock to prevent water from entering the boat.
2. Locate the Pump: Find the raw water pump on your engine. Its location can vary, so consult your engine manual if needed.
3. Access the Impeller: Remove the pump cover plate by unscrewing the retaining screws. Keep track of the screws and any associated washers.
4. Remove the Old Impeller: Using impeller pulling tools or two flat-head screwdrivers, carefully pry the old impeller out of the pump housing. Note the direction of the blades as you remove it.
5. Clean the Housing: Inspect the pump housing for debris, cracks, or wear. Clean it thoroughly to ensure a good seal.
6. Install the New Impeller: Lightly lubricate the inside of the pump housing and the new impeller with a water-based lubricant or glycerine. Insert the new impeller with a rotating motion, ensuring the blades bend in the correct direction (matching the old one).
7. Replace Gasket and O-Rings: Install the new gasket and any O-rings included in the kit onto the cover plate.
8. Reassemble: Secure the cover plate back onto the pump housing with the screws. Tighten them evenly in a crisscross pattern to ensure a proper seal.
9. Final Check: Re-open the seacock. Start the engine and immediately check for any leaks around the pump cover. Confirm that water is flowing correctly through the cooling system.

Troubleshooting & FAQ

Q: How do I confirm this impeller kit fits my Volvo Penta D4 engine?
A: The best way is to cross-reference your existing part number with the numbers listed in our "Part Number Cross-Reference" table. You can also verify fitment by checking your engine model and series against our "Compatible Engine Models" list. This kit fits D4-180 through D4-320 models.

Q: How often should I replace the engine's water pump impeller?
A: For most marine engines, it is recommended to inspect the impeller annually and replace it every 1-2 years, or after a specific number of engine hours as suggested by your engine manufacturer. Frequent use in sandy or silty water may require more frequent replacement.

Q: What are the signs of a failing impeller?
A: Common signs of a failing impeller include engine overheating, a reduced flow of water from the exhaust outlet, visible cracks or missing blades on the impeller itself, and a stiff or brittle texture. If you notice any of these, the impeller should be replaced immediately to prevent engine damage.

Q: OEM vs. Aftermarket?
A: 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.

Q: How fast do you ship and how much does it cost?
A: 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.

Q: What is your warranty and return policy?
A: 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.