Search  for anything...

Seachoice Universal Boat Motor Flusher, Muff Style

  • Based on 70 reviews
Condition: New
Checking for the best price...
$10.24 Why this price?
Save $26.75 was $36.99

Buy Now, Pay Later


As low as $2 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Sep 29 – Sep 30
Order within 11 hours and 39 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Style: Universal Round


Features

  • UNIVERSAL ROUND CUP DESIGN Fits a wide range of outboard motors with round water inlets; secure earmuff-style fit channels water directly into intake ports for thorough, effective flushing.
  • FLUSH AFTER EVERY TRIP ALL SEASON LONG Every saltwater outing deposits corrosive particles inside your engine cooling passages. Flush immediately after each use not just before storage to stop internal corrosion before it takes hold and extends the life of every component in the cooling system.
  • GARDEN HOSE READY ANYWHERE YOU PARK Flush at the dock, in your driveway, or at the ramp any standard garden hose connects directly to make post-trip flushing part of your routine every single time you come off the water.
  • STAINLESS STEEL CLAMPS INCLUDED Four stainless steel hose clamps and an extended wire guide keep earmuffs locked in position during the entire flush no hand-holding required.
  • NO TOOLS REQUIRED Attaches quickly by hand in seconds simply position the earmuffs over the water inlets, secure with the included stainless steel hose clamps, connect your garden hose, and you're ready to flush. No wrenches, no hardware, no hassle.
  • EASY INSTALL SLIDES OVER RECTANGULAR WATER INLETS Simply slide the earmuffs over the rectangular water inlets no fussing, no force. Perfect for thoroughly flushing saltwater, sand, and silt from lower unit water passages to keep your engine clean and corrosion-free after every trip.
  • FITS ALL SIDE WATER INLET ENGINES Compatible with all side water inlet engine configurations simply position the earmuffs over the side inlets for a secure, leak-resistant seal and a complete flush, making this one of the most versatile motor flushers available.

Item Package Dimensions L x W x H: ‎10.36 x 4.65 x 3.23 inches


Package Weight: ‎0.29 kg


Brand Name: ‎SEACHOICE


Warranty Description: ‎Limited 1 Year


Model Name: ‎Motor Flusher


Color: ‎Black


Suggested Users: ‎unisex-adult


Manufacturer: ‎Seachoice


Part Number: ‎50-18303


Style: ‎Universal Round


Included Components: ‎End Product & Information


Date First Available: June 10, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 29 – Sep 30

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Works great with Suzuki DF60A
Style: Universal Round
If you own a Suzuki DF60A, these are the muffs you want. I tried flushing my motor with the rectangle ones and I almost burned my impeller up. These muffs work excellent with no issues.
Reviewed in the United States on June 4, 2026 by Ian G.

  • These work for a mercury 2stroke 40HP.
Style: Universal Round
Ive been using the rectangular ones on my motor for 3 years, and lately i just figured id see if the round muffs worked any better. Well, sure enough, ill never go back to the rectangular ones. These make the motor shoot water from the motor with force! Mercury(tracker) 2 stroke, 2 cylinder, 40hp.
Reviewed in the United States on August 25, 2026 by blue bird

  • Works wonderful
Style: Universal Round
Great
Reviewed in the United States on March 16, 2026 by jess

  • Great for starting up your motor at the house
Style: Universal Round
Cheap, easy to use and doesn’t job! All I needed.
Reviewed in the United States on September 6, 2026 by Dakota

  • Better than the double water entry rectangular muffs
Style: Universal Round
This little cheap device does a lot more than the more expensive double sided rectangular one. I see the water pump out the tell tale immediately after I turn on the water. The more expensive model I’ve seen work on other motors but not on my Evinrudes. Came to a point where I was using my garbage cans to run my motors with water. I highly recommend this product. ... show more
Reviewed in the United States on November 22, 2025 by Marco H.

  • Works great
Style: Universal Round
Works like it’s supposed to
Reviewed in the United States on August 17, 2026 by Brian Ross

  • Works very well on my boat motor.
Style: Universal Round
Worked as described, fit my motor nice and secure. Allowed me to check my motor function at my house with a regular hose attached. As long as you start running your water through the motor before starting, and just let it idle, it should be fine.
Reviewed in the United States on June 7, 2026 by Randy A. Smith

  • Great fit
Style: Universal Round
Works great, tight fit on 175 outboard
Reviewed in the United States on July 1, 2026 by Bobby

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...