SKU: 20615265787

Water Pump Impeller Kit – Fits Mercury/MerCruiser 35-300 HP (Replaces 47-8M0100526, 47-43026Q06)

Sale price$27.90 Regular price$31.00
Save 10%

Pay in installments of $7.75 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 17 - Aug 22

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Water Pump Impeller Kit – Fits Mercury/MerCruiser 35-300 HP (Replaces 47-8M0100526, 47-43026Q06)Water Pump Impeller Kit Fits Mercury MerCruiser 35 300 HP This water pump impeller service kit is designed for a wide range of Mercury Mariner outboards from 35 HP to 300 HP and MerCruiser Alpha One Gen 2 sterndrives with serial numbers 0D469859 and above. It provides a reliable, direct fit solution for maintaining your engines cooling system. This kit is a direct replacement for Mercury Quicksilver part numbers 8M0100526 and 47 43026Q06, as well as

Water Pump Impeller Kit – Fits Mercury/MerCruiser 35-300 HP

This water pump impeller service kit is designed for a wide range of Mercury/Mariner outboards from 35 HP to 300 HP and MerCruiser Alpha One Gen 2 sterndrives with serial numbers 0D469859 and above. It provides a reliable, direct-fit solution for maintaining your engine’s cooling system.

This kit is a direct replacement for Mercury/Quicksilver part numbers 8M0100526 and 47-43026Q06, as well as Sierra 18-3265 and UANOFCN 8M0100526.

  • Engineered for improved water flow and cooling efficiency.
  • Constructed with a durable Neoprene marine rubber impeller, stainless steel faceplate, and non-asbestos gaskets.
  • Includes all necessary gaskets, seals, and O-rings for a complete water pump rebuild.

Part Number Cross-Reference

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

Brand Part Number
Mercury/Quicksilver 8M0100526
Mercury/Quicksilver 47-43026Q06
Sierra 18-3265
UANOFCN 8M0100526

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Mercury/Mariner Outboard

Brand Model Rated HP Stroke OEM Part No. Notes
Mercury BigFoot/Command Thrust 40-60 4-Stroke 8M0100526, 47-43026Q06
Mercury BigFoot 60 2-Stroke 8M0100526, 47-43026Q06 Serial #0D000750 and above
Mercury FourStroke 75-115 4-Stroke 8M0100526, 47-43026Q06 All models
Mercury FourStroke 150 4-Stroke 8M0100526, 47-43026Q06 All models
Mercury Standard 70-90 2-Stroke 8M0100526, 47-43026Q06 Serial #0A996142 and above
Mercury Standard 100-125 2-Stroke 8M0100526, 47-43026Q06 4 cylinder models with pump cover screws without insulators
Mercury OptiMax 200/225/250 2-Stroke 8M0100526, 47-43026Q06 3.0L V6 models
Mercury Verado 4-Stroke 8M0100526, 47-43026Q06 L4 & L6 models with 4.80" & 5.44" diameter gearcases
Mercury Various Outboard Models 35-300 2-Stroke & 4-Stroke 8M0100526, 47-43026Q06 Model specific - verify application

MerCruiser Sterndrive

Brand Model OEM Part No. Notes
MerCruiser Alpha One Gen 2 8M0100526, 47-43026Q06 Serial #0D469859 and above
MerCruiser Gear Housing Drive-2.33:1 8M0100526, 47-43026Q06 USA-0T625304/BEL-0P216185 and up

Technical Specifications

Specification Value
Product Type Water Pump Impeller Kit
Installation Direct replacement
Housing Material Non-asbestos gasket, Neoprene Marine Rubber Impeller and O-Ring, Stainless Steel Plate
Housing Color Black/Silver
Other Technical Attributes Designed for improved water flow rate and cooling efficiency

Package Contents

  • 1 x Water Pump Impeller (8M0025709)
  • 1 x Water Pump Faceplate (8172761)
  • 1 x Face Seal (8M2014338)
  • 1 x Quad Ring (455771)
  • 1 x Impeller Gasket (8M0050720)
  • 1 x Impeller Key (8M0032833)
  • 1 x Seal Ring Gasket (8172771)
  • 1 x Drain Screw Gasket (830749)
  • 2 x O-Ring (0.796 in. x 0.139 in.) (21836)
  • 1 x O-Ring (0.921 in. x 0.139 in.) (90196)
  • 1 x Face Seal Setting Tool (818769)

Explosion Diagram

Installation Guide

  1. Disconnect Power: Disconnect the battery and shift the outboard into neutral.
  2. Access the Lower Unit: Remove the bolts securing the lower unit (gearcase) to the upper leg of the outboard.
  3. Remove the Old Pump: Carefully lower the gearcase. The water pump housing is located on top of the gearcase. Remove the bolts securing the water pump housing.
  4. Inspect and Clean: Remove the old impeller and gaskets. Clean the housing and faceplate surfaces thoroughly, ensuring they are free of old gasket material and corrosion.
  5. Install New Components: Lightly grease the new impeller and insert it into the housing, rotating the driveshaft clockwise to seat the vanes correctly. Install the new key, gaskets, and seals.
  6. Reassemble Pump Housing: Secure the new faceplate and housing with the provided bolts, tightening them to the manufacturer's specified torque.
  7. Reattach Lower Unit: Re-install the lower unit, ensuring the driveshaft, shift shaft, and water tube align correctly. Secure with bolts.
  8. Test Operation: Reconnect the battery and start the engine using a water supply (flushing muffs) to verify proper water flow from the tell-tale outlet.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my specific engine?
A: The best way is to check the part number on your original water pump or in your service manual. Compare it to the cross-reference list provided (8M0100526, 47-43026Q06). You should also verify your engine model and serial number against the compatibility tables above.

Q: What are the signs of a failing water pump impeller?
A: Common signs include the engine overheating at idle or low speeds, a weak or non-existent water stream from the "tell-tale" outlet, or a cracked and brittle appearance on the old impeller's vanes during inspection.

Q: How often should I replace my water pump impeller?
A: For preventative maintenance, it is recommended to inspect the impeller annually and replace it every 1-2 years, or every 100-200 hours of use, depending on operating conditions (especially in saltwater or sandy/silty water).

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: 20615265787

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 16 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
J
Verified Purchase
Jay H. Fine
Phoenix, US
★★★★★ 5
Love These Balls
Color: H) 2.5" 3-Pack (Beef), Color: H) 2.5" 3-Pack (Beef)
These are great balls. My Border Collie can destroy a tennis ball in a couple of hours and the Kong brand ball is heavier than I like to play with in the house. These balls hold up to her biting and chewing but are lite weight and softer for bouncing off the walls.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
J
Verified Purchase
JEN
Louisville, US
★★★★★ 3
Seems durable - but the scent is not the best
Color: B) 3" 2-Pack (Bacon)
I don't know if I'd call the scent of this "bacon," more like rubber with a hint of bacon. It's very strong. I gave my dog one of the balls & put one in a cabinet where I keep his treats & a few other unrelated odds & ends. I now hold my breath when I open that cabinet b/c good lord, the smell. I'm tempted to just give that one to the dog too, just because it'll air out eventually & then everything else in that cabinet won't smell bad. My dog feels so-so about it. He'll briefly chase after it & chew on it, but loses interest in it pretty fast. My rather hyperactive cat also plays with it from time to time, as he seems to have more interest in most dog toys than the dog these days, so there's that. (Then again, he thinks a wide variety of random items around the house are loads of fun to toss about, so it's possible his opinion is to be taken with a grain of salt. Between the brief periods of one of these balls being chewed on & clawed at, it's stayed completely intact. I think if you have a dog who simply likes to play fetch or chew on rubber balls in general, this one would stand up to the task. But if you're expecting it to be greeted with the enthusiasm as a bacon grease covered ball might be - I'd adjust your expectations.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 19, 2023
S
Verified Purchase
SAM
New York, US
★★★★★ 5
My dogs favorite toy so far in two years
Color: C) 4" 2-Pack (Bacon)
I use this with my medium sized dog. These are large for him but that's what I want so I don't ever have to think about them being too small or a swallow hazard. He has been through A LOT OF TOYS in the last couple years, but nothing, NOTHING has he loved as much as these. His favorite used to be squeaker balls. Then his favorite was crackle balls. But he will gladly ignore both for this one. I don't know if it's the bacon flavor or what, but he go nuts for it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
M
Verified Purchase
Matt B
San Leandro, US
★★★★★ 5
Bacon? IDK but good stuff either way
Color: C) 4" 2-Pack (Bacon)
What is there to say? they're giant 4" rubber balls from the Chew King brand which is very durable brand. The best part is they don't roll under couches, side boards, etc cause they're just big enough.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
T
Verified Purchase
Tina
West Palm Beach, US
★★★★★ 5
Durable, bright and bouncy
Color: H) 2.5" 3-Pack (Beef)
Love these. Color is bright so I can find it in grass and dirt. Quality is good! Works well in a Chuck it. Love these holes for whistle sound as it’s in the air. No scent cost is awesome for all 3 in pack
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025

recommand products