Great bulkhead fitting replacement
340893
These are great, they replaced leaky bulkhead fittings and haven't had a leak since. They take some doing to get them together, but are great once they are there. Make sure you drill the correct size hole, they may seem tight but that is why they work.
3041406
Perfect bulkhead for my aquarium. Look under bulkreefsupply.com for the hole size needed for this to fit in. I believe it was a 35mm hole. So far it's holding up and doing its job!
4809752
Good bye old plastic fins on our old Aprilaire filter. This retro fit worked great and now have a 13 MERV filter that's easy to replace. We but the replacement filter on Amazon subscription so we do not even need to remember to order or replace it. We did not need the Styrofoam spacer (supplied) for our set up. The filter goes edge to edge and we got rid of the old fiberglass gasket that was filthy and non replaceable on the access door for the old 2200 plastic box housed the media filter. Much cleaner setup. Very pleased with this upgrade kit and would recommend it for model 2200.
43952
Fit right in place, seemed to be less restrictive - the fan ran smoother and quieter.  Wasn't as thick as the original one but it made things a lot better just the same and cost way better than the suggested "get a whole new exhaust unit the local nitwitted "big box" sales people said was the only thing to do fro "such and old" design as my thing (Nautilus stove hood exhaust).
1021947
This was a perfect fit for the 59-CF Woods mower deck I have on my Farmall Cub. The hex head bolts were a little annoying to deal with, since you can't get a socket on them, but were fine with an open ended wrench. The originals used allen-head fasteners, which were much harder to deal with and torque down properly. The bolts appeared to be grade 5 or better, which was nice. The taper lock bushing has a full length slot, which made placement on the shaft easier than the original part.

The casting and machining is top-shelf.

Diameter is very slightly larger than the original for the 59-CF.

Uncoated and unpainted, which would have been nice.
2836313
Great replacement.  Our old cover was not a Kohler and this fit perfectly anyway.
3578025
I bought this for my 1992 Coachman truck Camper which has a Norcold refrigerator and it fits perfectly. Good quality, maybe a hair thinner than the original, but still good workmanship. My original Norcold vent model was stamped  #615791 and this is a exact replacement. It came with new screws for installation too.
2997440
Makes a considerable difference when you have a particularly deep tank. Fits on securely without losing any of the intake
1681130
This replacement shroud went on flawlessly.  I used the old bolts with the new stainless washers.  The holes matched up perfectly and took very little time to replace.
1416300
Has worked well for four 1/8" bulkheads.  Much strong than a dual I bought from another vendor. I wish general tools had a two blade offering on Amazon.
2894276
Excellent replacement for stock gear. Great price better than lhs. Very strong and never stripped out on me. Quality part.
2168946
Two of the bulkheads have screwed up threads - I have had trouble getting replacements, will try again later this week
1328790
Perfect fit for my Ball gallon vessel.  Replaced another spigot that wasn't stainless steel.
2653985
Perfect replacement for the low volume original on my tank, this was a great deal for a quality product. Provides outstanding support for my 20+ CFM compressor pump.
2656937
Perfect fit for my tankless water heater upgrade project
274083
This is a perfect replacement for the impeller found in the Bosch AQ1 power vent (for some of their older tankless water heaters). The dimensions and overall size are an exact match, and it slides perfectly onto the motor shaft.

I'm fairly certain the Bosch AQ1 is just a rebranded Tjernlund unit.

I could not find any parts listed for the AQ1 power vent anywhere on the web, and that whole system has long since been replaced by a new model (which I'm told isn't compatible with my water heater).

The AQ1 manual did not list any part numbers at all.  But the wiring diagram referred to "Tjernlund relays", which steered my search a bit.  After some more searching of the web, I found the dimensions of this impeller and they matched the dimensions of the old rusted and busted one I needed to replace.

It took me 5 minutes to install this in my AQ1 unit (after getting the old one out, of course).  The set screw is included and was already threaded into the hole, so I just had to slide the impeller on to the motor shaft and tighten the set screw.  Voila.

This has saved me so much money.  I was either looking at buying a differently designed power vent kit and trying to retrofit it to my water heater or getting a whole new water heater if that wasn't possible.  Either way I probably would have been paying a professional, so I could have hot water back in my house in a reasonable timeframe.
2838017
Not an OEM part but a perfect fit and a good value. Pretty simple to replace depending on your model. Many videos can be found online to show you how easy it is to replace this part. I read other reviews that indicated the original grommet on reservoir was better than the one that came with the replacement pump. I did not check at the grommet that came with the replacement pump but used original grommet since it was still in place. Perfect fit. One star off since the pressure/output is considerably less than the original pump. But all in all, for the price of the replacement pump and money I saved installing myself, still happy with the purchase. Only been installed a couple of weeks and working fine. Don't know how long it'll last. The original part lasted 11 years.  If this one makes it a couple of years I would consider it money well spent.