SKU: 71655855204

Impeller Kit with 4-Hole Gasket – Fits Volvo Penta Marine Engines

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Description

Impeller Kit with 4-Hole Gasket – Fits Volvo Penta Marine EnginesImpeller Kit with 4 Hole Gasket Fits Volvo Penta Marine Engines (Replaces 875575, 855901) This aftermarket impeller kit is designed for a wide range of Volvo Penta marine engines from the 1970s to the 1990s, including the AQ115 AQ171 series, 230A 251A models, BB115 BB170 series, and MB20 MD21 models. It serves as a direct replacement for several OEM and aftermarket part numbers, ensuring compatibility and reliable performance for your raw water

Impeller Kit with 4-Hole Gasket – Fits Volvo Penta Marine Engines (Replaces 875575, 855901)

This aftermarket impeller kit is designed for a wide range of Volvo Penta marine engines from the 1970s to the 1990s, including the AQ115-AQ171 series, 230A-251A models, BB115-BB170 series, and MB20/MD21 models.

It serves as a direct replacement for several OEM and aftermarket part numbers, ensuring compatibility and reliable performance for your raw water cooling pump.

  • Complete Kit: Includes one neoprene impeller and one 4-hole gasket for a full replacement.
  • Direct Fitment: Engineered to replace Volvo Penta 875575 / 21951350 / 831182 and Sierra 18-3075.
  • Durable Construction: Features a flexible neoprene impeller with 12 blades and a corrosion-resistant brass insert.

Part Number Cross-Reference

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

Brand Part Number
Volvo Penta 875575
Volvo Penta 21951350
Volvo Penta 831182
Sierra 18-3075

Compatible Engine Models

For Volvo Penta Engines:

Confirm your engine model/year in the table below.

Brand Model OEM Part No.
Volvo Penta 230A 875575/21951350
Volvo Penta 230B 875575/21951350
Volvo Penta 250A 875575/21951350
Volvo Penta 250B 875575/21951350
Volvo Penta 251A 875575/21951350
Volvo Penta AQ115A 875575/21951350
Volvo Penta AQ115B 875575/21951350
Volvo Penta AQ120B 875575/21951350
Volvo Penta AQ125A 875575/21951350
Volvo Penta AQ125B 875575/21951350
Volvo Penta AQ130 875575/21951350
Volvo Penta AQ130A 875575/21951350
Volvo Penta AQ130B 875575/21951350
Volvo Penta AQ130C 875575/21951350
Volvo Penta AQ130D 875575/21951350
Volvo Penta AQ131A 875575/21951350
Volvo Penta AQ131B 875575/21951350
Volvo Penta AQ131C 875575/21951350
Volvo Penta AQ131D 875575/21951350
Volvo Penta AQ140A 875575/21951350
Volvo Penta AQ145A 875575/21951350
Volvo Penta AQ145B 875575/21951350
Volvo Penta AQ151A 875575/21951350
Volvo Penta AQ151B 875575/21951350
Volvo Penta AQ151C 875575/21951350
Volvo Penta AQ165A 875575/21951350
Volvo Penta AQ170A 875575/21951350
Volvo Penta AQ170B 875575/21951350
Volvo Penta AQ170C 875575/21951350
Volvo Penta AQ171A 875575/21951350
Volvo Penta AQ171C 875575/21951350
Volvo Penta AQD21A 875575/21951350
Volvo Penta AQD21B 875575/21951350
Volvo Penta BB115A 875575/21951350
Volvo Penta BB115B 875575/21951350
Volvo Penta BB115C 875575/21951350
Volvo Penta BB140A 875575/21951350
Volvo Penta BB145A 875575/21951350
Volvo Penta BB165A 875575/21951350
Volvo Penta BB170A 875575/21951350
Volvo Penta BB170B 875575/21951350
Volvo Penta BB170C 875575/21951350
Volvo Penta MB20A 875575/21951350
Volvo Penta MB20B 875575/21951350
Volvo Penta MB20C 875575/21951350
Volvo Penta MD21A 875575/21951350
Volvo Penta MD21B 875575/21951350

For Johnson Pumps:

The impeller also fits the following Johnson pump models. For Johnson/Evinrude owners, here’s a guide to help you identify your engine’s serial/model: Johnson Serial Number Guide.

Brand Model Notes
Johnson 10-32621-2 Pump model
Johnson 10-32621-3 Pump model

Technical Specifications

Specification Value
Product Type Water Pump Impeller Kit
Installation Location Marine Engine Raw Water Cooling Pump
Impeller Dimensions Diameter: 57mm (2-1/4"), Width: 31.5mm (1-1/4"), Shaft: 16mm (5/8")
Impeller Material Neoprene
Insert Material Brass
Blades 12
Profile K Silhouette
Fitting Type Key Drive (3/16")
Weight 100g (0.22 lbs)

Package Contents

  • 1x Impeller (Replaces 875575/21951350/831182)
  • 1x 4-Hole Gasket (Replaces 855901)

Installation Guide

  1. Safety First: Disconnect the engine's battery and close the raw water intake seacock before beginning work.
  2. Access the Pump: Locate the raw water pump on your engine and remove the screws from the pump's faceplate cover.
  3. Remove Old Impeller: Carefully pull out the old impeller using needle-nose pliers or an impeller puller tool. Note the orientation of the blades for reassembly.
  4. Inspect and Clean: Clean the inside of the pump housing and the cover plate, removing any old gasket material or debris. Inspect the housing for scoring or damage.
  5. Install New Gasket: Place the new 4-hole gasket onto the pump housing, ensuring it is correctly aligned.
  6. Insert New Impeller: Lightly lubricate the new impeller with a water-based lubricant or glycerin. Insert it into the housing, rotating the shaft in the direction of engine operation to bend the blades correctly.
  7. Reassemble: Reinstall the cover plate and tighten the screws evenly in a star pattern to ensure a proper seal. Do not overtighten.
  8. Final Checks: Open the seacock and reconnect the battery. Start the engine and immediately check for any water leaks around the pump housing and verify strong water flow from the exhaust.

Troubleshooting & FAQ

Q: How do I confirm this impeller fits my engine?
A: We recommend cross-referencing your existing impeller’s part number with our list of direct replacements (Volvo Penta 875575, 21951350, 831182, and Sierra 18-3075). You should also verify that your engine model is included in the compatibility list provided on this page.

Q: What are the signs that my impeller needs replacement?
A: Key indicators of a worn or failing impeller include engine temperatures rising above normal, a noticeable reduction in water flow from the exhaust outlet, or finding pieces of old impeller blades in the cooling system. Visible signs on the impeller itself include cracks, tears, missing blades, or a stiff, brittle texture.

Q: How often should I replace my water pump impeller?
A: As a crucial part of your engine's cooling system, the impeller should be inspected at least once a year. We recommend replacing it every one to two seasons of use, or more frequently if you operate your boat in sandy, silty, or debris-heavy waters.

Q: Is this an OEM part?
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.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 71655855204

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Reviewed in the United States on May 22, 2014
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Peter Sorenson
Pawtucket, US
★★★★★ 5
The Innovator's DNA - Disruptive Research - Disruptive Writing
A Politically Correct Status Quo It is politically correct in management circles to say that you are "results oriented" or that you "drive for results" in your organization. The status quo in business schools is to indoctrinate students in the delivery skills of analyzing, planning, detail-oriented implementing, and disciplined executing. This book and the research upon which it is based disrupts that politically correct status quo. Clayton Christensen has spent close to two decades creating the research, conceptual, and application foundation of the disruptive innovation body of knowledge. He has been working for more than 8 years with Jeff Dyer and Hal Gregersen, both gifted researchers, teachers, and consultants in their own right, on this project. These guys are a disruptive "dream team" of contributors. This book articulates an extension of the disruptive innovation body of knowledge that clearly describes an individual profile of the disruptive innovator and an organizational profile of an organization that makes disruptive innovation happen. So what makes this book disruptive? The first thing is timing. It arrives on the scene at a time when innovation is one of the most critical components of a solution to our global financial and organizational mess. If we are to get out of our morass of debt and sluggish growth and respond to the continually emerging challenges of a burgeoning global society it will ride on the backs and wings of innovation. The status quo must be disrupted for us to survive and thrive! Second is the audacity of the core models. The authors claim that innovation can be learned at both the individual and organizational level. Individuals can increase their ability to discover (Discovery Quotient - DQ) and learn to be more innovative. They cite the four specific behavioral skills of asking questions, engaging in observations, networking with people who have a different point of view, and experimenting to figure out what can work as the common elements of what innovators do. They also identify the cognitive skill of associational thinking, the ability to find connections between ideas that do not seem to be related to each other, as the connection between the behavioral skills and the generation of ideas. They extend their claim that the innovation competency can be learned to the organizational domain by saying that organizations can become more innovative through developing and leading people, designing and implementing processes, and advocating and living by philosophies that support innovation. These two arguments stand in stark contrast to the beliefs and practices of a vast majority of leaders and institutions. (For a diagram of the Model see [...]) 'And all of this is built upon the third source of disruption: research. Their work is based on well-founded research into the "DNA" of the world's leading innovators and the world's most innovative organizations. The authors conducted nearly 100 interviews of world class innovators and their colleagues to get at the heart of what innovators do. They also interviewed and surveyed executives who are not innovators. (Their survey data base has over 5000 respondents in it.) So they have been able to compare and contrast the two populations to more clearly see what it takes to effectively innovate. They have also done research on business results attributable to innovation. Collaborating with HOLT (a division of Credit Suisse) they were able to craft a measurement called the "innovation premium." This measure identifies if an organization's market capitalization can be accounted for by existing cash flows or if there is an innovation influence on the stock price. By using this measure, they have been able to clearly and objectively identify which organizations are benefiting from innovation. Yet to Explore The tension in the balance of influence and power between the leaders with predominantly "Discovery" or "Delivery" mindsets is an area that has yet to be explored. If the premises of this book are sound, and I believe they are, we need to figure out how to manage that tension and balance in order to generate, incubate, and strengthen innovative ideas as we bring them to full fruition in the marketplace. Great ideas that are not delivered upon are simply recreational pursuits that do not build great people, great institutions, and great societies. So there is work yet to do. Invest Your Time and Effort This book makes a significant contribution to both the disruptive innovation body of knowledge and the evolving body of practice on innovating disruptively. It is well worth reading, pondering, and acting upon.
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Reviewed in the United States on December 5, 2015
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Stephen Collins
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