The outer shell rear threads are too large and will ...
352922
The outer shell rear threads are too large and will not allow the outer shell to tighten down against the mounting panel. Luckily I had the parts from the old unit and it's outer shell worked OK. So, this unit probably won't work for you.
2080951
Looks great but the outer shell does not stay on.
2126007
This product cannot function as intended due to too-shallow threads that prevent threading into a standard pipe fitting.  It appears that either the threads were improperly cut or it was plated too heavily or both.  I returned the part to Amazon via their very efficient process.
3516612
The threads were too loose and wide. Can be used for some things that are not too heavy or thick.
751815
Needed slight modification to fit. The rubber boots make it sit too high, and the intakeand outtake hose port extends too far to properly connect with unmodified hose, causing a kink in the hoses.
1731605
Slot is too wide for the Marlin 336 hammer in both length and width.  Doesn't fit newer Marlins with cross bolt safety without alteration -- the installation instructions say so, but the Amazon listing does not.  With a little more attention to detail this could be a great product, but in it's current state it's hard to recommenced.
2211186
Wrong fitting sizes just as others have described I should have read the reviews even though the part numbers matched I had to force thread a 1/4 compression fitting in to make it work cost me another $6 for 2 fittings and the thread isn't just 1/4 it's metric thread so the standard thread cross threads but I forced it into the soft plastic and it works
2219333
The two carriage bolts are the wrong size, and there should be a second set of mounting holes and bolts to keep the brackets from vibrating over. I will have to buy hardware, and drill extra holes.
261576
Does not fit properly on Town and Country models with rear air  conditioning, even though they claim it does fit.  The bracket touches the ac line, which will eventually cause the line to rupture.
4884143
Product quality is very good, But it does not fit as it is too wide. (will need to cut the welded bracket that holds the tips together to install) Poor oversight on design.
4791040
I like it but the thread size wasn't exact. almost had to force it a little. And the curved clamping surface against the flat bolt is kind of a bastard. It'd be nice if they included Bellevue washers to fit the curve perfectly
3861873
Was too long and slightly different shape than my stock hose.  I had to cut it and it still didn't fit quite right, but I made it work.
2316443
The thread pitch on the mounting/pivot bolt is different from the stock bolt. Be prepared with updated mounting plate or to cut new threads in your old plate. I did the latter.
2197611
I looked the part number up in the parts manual.  this is the one listed. Its an inch too long for rear wheel drive.  i tied 3 knots to reduce the length. It took a couple hours of iterating. Works with mods.
678136
It would have been better if there were specifications.  The threads as metric rather than SAE so they don't fit the application.
2488032
Overall I got what I asked for. The grill looks great, the only downside is the size. I ordered two of these (140mm each) to cover a 280mm space unfortunately while the bolt pattern in this product is 140mm the outer edge (circle) around the image is larger. This means that if they're stacked right next to each other the fit is not clean but instead requires them to be overlapped. I considered cutting or sanding the upper and lower edges to refine the fit but I didn't want to damage the pieces. It is a workable issue (for me) and not a big deal but others may find it unsatisfactory so I figured it's worth noting.
751560
I found some wear and collapse on the threads. It's difficult to make it fit at the initial inserting becaus of the collapsed threads.