Impeller Assembly - 350B

Product No. PRIM350B


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Impeller Assembly for the Penguin® 350B.
Impeller Assembly - 350B is rated 4.1 out of 5 by 31.
Rated 1 out of 5 by from marine impeller It was a good price for there part, but shipping almost $9 that was crazy.
Date published: 2017-09-23
Rated 4 out of 5 by from Fast shipping Needed new Impala for my 350 filter. Very fast shipping
Date published: 2017-08-23
Rated 1 out of 5 by from Sadly Disappointed I used to have the Emperor 400, 2 actually, and was extremely satisfied them. They were quiet, and the bio-wheels never stopped turning. They were so good, that I was able to stock my 120 gallon tank with 127 fish. I purchased the 350's, again 2, May 10, 2016. Both impellers and impeller shafts are deplorable worn. I've always had issues with the bio-wheels turning.I have 2 air-stones, in under-gravel filter lift tubes. Each stone is 24" away from the intakes. I have examined the filters, looking for sand, gravel, carbon, debris, and even checked for snails. No foreign matter found, but that's when I noticed that the shaft and sleeve were badly worn. The bio-wheels, I have done the same, checking for foreign matter, snails etc. Nothing found. I have had this issue with new filter cartridges, high water levels, and even checked the flow without the strainer on the intake without the covers on either. The bio-wheels will turn more often than not without my media in the filters.Not what I had expected :(
Date published: 2017-05-12
Rated 1 out of 5 by from terrible loud rattly extremely loud from day one the most annoying filter ive ever had I hear good things about penguin and emporer so i but oneterrible mistake hope you dont plan on sleeping by your tankclank rattle bang annoying as can be
Date published: 2017-04-02
Rated 5 out of 5 by from Nice to have replacement parts! It was nice to be able to get replacement parts when I needed them.
Date published: 2016-10-17
Rated 5 out of 5 by from Parts needed Easily accessible process and availability of parts, plus timely shipping.
Date published: 2016-09-20
Rated 4 out of 5 by from Much quieter now The old one was a bit rusty and Vaseline didn't help. Nice and quiet after replacing. Shipping cost is quite ridiculous, though.
Date published: 2016-08-05
Rated 5 out of 5 by from Was exactly what I needed Had two penguin 350 filters and both Impellers were broken because of heavy wear and tear. The filters were very loud or sometimes stopped working. I ordered two new impellers this spring and replaced them very easily and it worked like a charm. The filters are now so silent. Very happy with the product and the quick delivery.
Date published: 2016-06-27
Rated 5 out of 5 by from Great Service! Received the part we needed in great timing. Very happy with Marlineland
Date published: 2016-04-25
Rated 4 out of 5 by from Great features Thank you for your quick servece I was very happy to get impellers I use sand they wear out often
Date published: 2016-04-19
Rated 5 out of 5 by from Exact replacement for my 350 bio filter This is an exact replacement for my penguin 350 power filter
Date published: 2015-06-05
Rated 1 out of 5 by from Made Noise Problem Worse- Poor design I ordered this, thinking it would fix the noise problem I began to get on my filter. It actually made it WORSE. It seems the new impeller design is worse than the old one.
Date published: 2015-04-29
Rated 5 out of 5 by from Perfect replacement Looked everywere locally for a replacement part. For the peace, quiet and not having to hear my wife give me that look again was worth the shipping and handling.
Date published: 2014-06-27
Rated 5 out of 5 by from The Product is a perfect fit and exactly what I needed. it was also easy to find on teh web page This product was delivered extremely fast and has worked great since I installed the two Impellers. I will order from Marineland if I need any other replacement parts.
Date published: 2014-03-11
Rated 5 out of 5 by from superb My goldfish spit sand into the filter intake and it got into the impeller making a crackeling noise and was really loud this made it really quite again I'm so happy I got this.
Date published: 2014-03-08
Rated 5 out of 5 by from Works for Penguin 300 I have an OLD (at least 30 years old) Penguin 300 filter and this replacement impeller works perfectly. Highly recommended!
Date published: 2014-02-03
Rated 4 out of 5 by from Product was exactly what I needed! I ordered the impeller -350B for my filter. It is exactly what I needed to repair the filter as the old one was not functioning correctly. It did however, last a long time for the actual work it preforms. I would recommend the Marineland site to anyone needing to replace factory parts for any Marineland product. The shipping was cheap and quick without any problems.
Date published: 2014-01-12
Rated 5 out of 5 by from OEM replacement impeller. My old impeller was making noise when it was running. It was several years old and I have a sandy mix tank bottom. So I purchased this new impeller for the 350- B and my filter is running like new again. A+++++
Date published: 2013-12-12
Rated 5 out of 5 by from impeller Fantastic part. Stoppes that nasty rattle from old impeller
Date published: 2013-12-02
Rated 5 out of 5 by from The replacement impeller fixed the rattling problem. The replacement impeller fixed the rattling problem with the filter. It now runs smooth, quiet & efficient.
Date published: 2013-11-27
Rated 5 out of 5 by from This product is of great quality It was the exact product needed and arrived in good condition, in a timely manner.
Date published: 2013-09-11
Rated 5 out of 5 by from impeller You folks are great company... And a pleasure to deal with. Will be usingMore often.
Date published: 2013-09-03
Rated 5 out of 5 by from parts it was the replacement part i needed, thanx alot !!!
Date published: 2013-07-10
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fits bio-wheel 350 ?

Asked by: jennypeters
This impeller fits the Penguin 350, yes. BREX
Answered by: BREX
Date published: 2017-10-06

will this impeller assembly fit a350b

Asked by: orville wright
Yes, it will. BREX
Answered by: BREX
Date published: 2017-07-18

My 350 Penguin won't run again if power goes off. I had to lift a little part of the impeller housing in order to start again. Just a few days ago it happen again but this time won't run anymore. Impeller shaft broke in two and magnet got deformed. 

Asked by: Eamv2017
Sounds like you need a new impeller assembly and a power strip with surge protection. Also, be sure to clean the impeller very well every month or two. BREX
Answered by: BREX
Date published: 2017-06-16

Impeller shaft in my 350 penguin bizarrely got stretched and thinned! Magnet also changed form and looks kind of triangular now. No idea what happen there!

Asked by: Eamv2017
This would be due to some sort of debris being caught in the well of the motor and wearing the shaft down. The most common culprit is sand. BREX
Answered by: BREX
Date published: 2017-06-15

I have a Marineland Magnum 350 set up. This LOOKS like the right Impeller assembly. Could you verify that before I order it. Thanks

Asked by: Bozo123
Hi Bozo123, This is definitely NOT the correct one as this one fits the Penguin 350. You need: and if the magnet is also bad, you need: BREX
Answered by: BREX
Date published: 2017-05-23

Hi, was wondering if this also fits the 330 model? 

Asked by: Amyrose
No, it doesn't, unfortunately, and that impeller is discontinued and no longer available. BREX
Answered by: BREX
Date published: 2017-02-22

Hi,wanted to know if you can remove the impeller from the lift tube? or is it one piece? This is on the penguin 350 hob

Asked by: Helnaak
It comes out. Remove the intake tube, then pull up the impeller housing. Once the housing is out, you will see the impeller attached to the underside of it. Just pull it out. BREX
Answered by: BREX
Date published: 2017-02-07

when will this impeller be back in stock?

Asked by: TinaD
Thank you for your inquiry. We have an ETA of late December. You may also want to purchase it through,, or One of them should have it in stock for sure. BREX
Answered by: BREX
Date published: 2016-11-28

I only need the 2 rubber pieces that fit on the ends of my penguin 350 filter impeller, they have cracked. Can I buy those separately?

Asked by: hondakawi
Unfortunately, no, you have to purchase the impeller assembly itself. BREX
Answered by: BREX
Date published: 2016-11-24

I just got a new bio wheel 350 and I have sand in my tank. It keeps making a horrible noise. How do I stop the sand from messing up the impeller

Asked by: Cc1413
Good afternoon, Sorry for the delay in response to your question. However, yould be able to use anything that has a smaller porous surface area that has been approved for aquarium use or food grade. Therefore a cheese cloth would work (rubber band it around the strainer), or filter floss. MINI
Answered by: MINI
Date published: 2016-07-12

 Is this the correct impeller For pump e160703?   If not can you give me the model number of what I am looking to purchase please? 

Asked by: Bob needs assistance
Unfortunately, the number you provided is just a raw material number, and does not provide any information as to what pump you own. If this is for a filter, the filter model/name will be on the cover. If this is a submersible pump, there should be a model name molded into the pump. BREX
Answered by: BREX
Date published: 2016-05-13

will this work on the 330

Asked by: rutnroy
No, it will not fit it correctly. BREX
Answered by: BREX
Date published: 2017-02-22

I took out my impeller to clean it off and remove some pieces off the blades etc...I'm only wondering which way the impeller should face when going back in. Does the side with the magnet go down toward the water or up toward the filter, thanks.

Asked by: xInhuman
Thank you for your inquiry. However, the magnet will need to go into the filter housing first, with the fan blades pointing up towards your ceiling. MINI
Answered by: MINI
Date published: 2016-02-24

Help with the noise plz

I bought a penguin 350 on black Friday and it worked great for about 1 week, then it started making a very loud grinding noise. Customer service sent me another one and it was running for about 2 weeks and now it's doing the exact same thing. I've taken them both apart, cleaned them even though they weren't dirty. I've checked the impellers and they look normal. I put it back together and it was quiet for about 5 minutes. I don't know what I'm doing wrong. Should I buy another impeller? Also I do have sand in the bottom of my tank, is that causing the problem? If so, how do I fix it besides taking out the sand? Any suggestions would be very appreciated. I'm at my wits end with all the noise, and not being able to use my filter. It filters very well except for the noise.
Asked by: Sherra
The sand is the issue. Sand will always find its way into any filter system and make the impeller noisy. You need to make sure there is no sand lodged under the magnet or the blades or in the bottom of the little reservoir in which the impeller resides. Use a toothpick to remove any sand packed in there. Once you have removed that, you can either place filter floss inside your strainers, or there is a little sponge accessory you can buy for a couple of dollars to slide over the strainer, just for this purpose. Preventing sand from getting into the filter is key to a quiet and well functioning filter. BREX
Answered by: BREX
Date published: 2016-01-07

Can I just order the purple impeller piece (plastic fins)? Everything else works fine.

Asked by: mddjr5
You can order the impeller assembly, yes, but not just the blades. They come as part of the assembly. BREX
Answered by: BREX
Date published: 2015-10-26

will impeller for penguin 350B fit an old penguin bio wheel 350?

i have an OLD penguin 350 bio wheel. the rubber mount on the end of the impeller is damaged. i am looking to replace either the rubber mount or the impeller.
Asked by: mike748
The impeller for the Penguin 350B is the same for the Penguin 350. PRIM350B is the correct item number for both versions. MINI.
Answered by: MINI
Date published: 2015-12-16

Filter is not pumping water

I have a 350
Asked by: Acosta
If the filter is no longer pumping water into and from your tank, then we would recommend that you try to clean the impeller with white distilled vinegar first. If this does not solve the issue, you would need to see if the impeller is moving inside of the housing, just not strong enough to create the system. If that is the case, then you will need a replacement impeller. MINI
Answered by: MINI
Date published: 2015-08-19


Will this fit a 200B filter
Asked by: Bhill
No, this is for the 350 and would be too big. You need PRIM200B. BREX
Answered by: BREX
Date published: 2015-07-20

will this impeller fit a 330b

Asked by: tomfmcs
No, it will not. We no longer have an impeller for that filter. BREX
Answered by: BREX
Date published: 2015-07-08

will a broken magnet on a propeller stop the filter from working?

I have three or four of the penguin bio wheel 350 and they all stopped working. When i took out the propeller assembly i noticed that the magnet on both was broken in half. Will replacing the propeller assembly fix that?
Asked by: DLRH
Yes, new impellers will fix that problem, but you want to determine why they are breaking as that is not a common issue at all. Something must be getting into the impeller area or you are getting a lot of build up of hard water and need to soak the impellers in vinegar more often. BREX
Answered by: BREX
Date published: 2015-05-12

is this the correct impellar for a Penguin 350 Power filter

Asked by: PopPop7
Yes, it sure is! BREX
Answered by: BREX
Date published: 2015-03-26

Do you have the rubber ends for the impellers available for sale? This is the part(s) that I need the most.

Asked by: Ed13
No, those are not available separately. If you are wearing through them, be sure to take the impeller out monthly and soak in distilled white vinegar for about 10 minutes during your routine maintenance, as you may have hard water. Also, sand can be an issue. If you have sand in the aquarium, put some filter floss inside the strainer. BREX
Answered by: BREX
Date published: 2015-02-13

Impeller installation

i need a new impeller for my marineland penguin 350 filter. how should i install the impeller? Should i connect it to the housing unit then put it in the filter ?? or should i put the impeller separately in the hole where it fits then put the housing over it which would connect the two? just want the best way to install the new impeller properly.
Asked by: JohnnyG306
Always connect the impeller to the impeller housing prior to inserting it. BREX
Answered by: BREX
Date published: 2015-01-28

does impeller for 350B fit the 350 itself?

Asked by: BbPp
Yes, the impller item #PRIM350B fits the Penguin Bio-Wheel 350 filter. ML2
Answered by: BREX
Date published: 2015-02-15

Does the 350 impeller fit the 330 model?

Asked by: Thien
Unfortunately, no, it does not. BREX
Answered by: BREX
Date published: 2014-12-29

Model 330 IMpeller

Can I order new impeller for a model 330? If so, what is the p/n
Asked by: skips
Unfortunately, those are no longer available. BREX
Answered by: BREX
Date published: 2014-09-08

Will this work with the 200B?

Asked by: Vyno
No, you need number PRIM200B. This one is too big. BREX
Answered by: BREX
Date published: 2014-07-11

Will this impeller work on the discontinued Penguin 330

Asked by: grr808
Unfortunately, no. BREX
Answered by: BREX
Date published: 2014-06-02

Will this impeller assembly fit a Aqua Tech 30-60 filter?

Asked by: Sharkbait
Only if you have the very old style filter where the impeller connects to an impeller housing, not an intake tube. If you have the newer style, just give us a call and we will send you one. BREX
Answered by: BREX
Date published: 2014-05-29

Correct impeller???

I am trying to find the correct impeller for a Penguin 300 filter. Can you direct me towards the part?
Asked by: Khillssss
Use the Impeller Assembly - 350B for the Penguin 300. I also have a 300 and it works perfectly.
Answered by: Geezerman
Date published: 2014-06-07
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