Whisper Motor Upgrade Kit 12 Volts w/ 1 1/2" Duck Bill Valves

$456.05 $387.95
(You save $68.10)
(21 reviews) Write a Review
ASD121, 385311423A
IN Stock

Are you tired of hearing that clicking noise everytime your VacuFlush® toilet is flushed? SeaLand / Dometic®  had their engineers come up with the answer that will make your VacuFlush® Sanitation even Better!


Included in Kit: Bellows, Bellows clamps, O'Rings & Whisper Motor w/mounting hardware, (4) 1 1/2" Duck Bill Valves



  • Creates 50% less sound than previous motors, makes for a much quieter operation

  • Flexible Coupling - isolates motor from drive shaft to eliminate "knock"

  • Industrial Grade Gears - precision machined gearing results in minimum noise and maximum load-carrying capability

  • Faster Vacuum Recovery - 7% increase in motor RPM regenerates vacuum faster

  • Integral Thermal Switch - shuts down pump to avoid overheating, Includes automatic restart

  • Retrofit Kit Available - 12vt & 24vt models Applies to all VacuFlush® system applications*


21 Reviews Hide Reviews Show Reviews

  • 5
    Customer service

    Posted by Tony Zuccaro on 1st Nov 2021

    Excellently Customer Service

  • 5
    quick shipping easy installation (considering)

    Posted by Lucky Dog on 16th Jul 2021

    Now the vacuum is so quiet it's hard to hear.
    Found a $20 in the duck consing the leak

  • 5
    Perfect upgrade, solved an age-old problems

    Posted by Dave P on 11th Jun 2021

    I have a 1999 SeaRay, and the head system was original. For years I had all kinds of issues with the vacuum not shutting off. I swapped Ducks a couple times, bellows, and the switch. Finally the pump started slowing down enough for me to realize it was the culprit . Ordered this kit, it was an easy install, and Seacoast Services was awesome - box showed up in 2 days.

  • 5
    Whistler motor upgrade kit-Vacuflush

    Posted by Jonathan Ross on 8th Oct 2020

    The kit was complete and easy to install. Works very well. Only change was the position of the motor made it a very tight squeeze in our 34 SeaRay Sundancer. Works perfectly!

  • 4
    Whisper motor upgrade

    Posted by Steve Bode on 14th Jan 2020

    I installed it and everything worked fine

  • 5
    Whisper motor upgrade kit

    Posted by Jeff Lyne on 21st Oct 2019

    I needed to replace the motor on my 2003 VacuFlush system and decided to also replace the bellows, duckbill valves and seals with this kit. The replacement was simple and all parts fitted the original, now 16 year old vacuum generator. My call for advice from George Melton at Seacoast was promptly returned and was very useful.
    The unit is now back in the boat and running perfectly with the added advantage that the unit pumps much quieter than the original.

  • 5
    works great

    Posted by keith on 23rd Jun 2019

    Fixed all of my problems with 1 kit

  • 4
    Replacement works well

    Posted by Bill Woods on 18th Feb 2019

    My original pump was no longer available and the folks at Seacoast helped me find the correct replacement. Price was fair, shipping was fast and it does bolt on and works well. But like most things on a Boat it is difficult to access all the hardware for removal and install.

  • 5
    everything fit great

    Posted by jeff morley on 14th Jun 2018

    not a two minute job, but well worth it