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Hook and Keeper

Hook and Keeper for Enclosed Trailer Door - Zinc Plated

Hook and Keeper for Enclosed Trailer Door - Zinc Plated

Item # 383400

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Enclosed Trailer Parts

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Shipping Weight: 0.32 lbs

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Hook and Keeper for Enclosed Trailer Door - Zinc Plated Hook and Keeper 383400
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Call 800-298-8924 to order Polar Hardware enclosed trailer parts part number 383400 or order online at etrailer.com. Free expert support on all Polar Hardware products. Guaranteed Lowest Price and Fastest Shipping for Hook and Keeper for Enclosed Trailer Door - Zinc Plated. Enclosed Trailer Parts reviews from real customers.
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  • Reviews (279)
  • Q & A (22)
  • Videos (2)
  • Photos
  • Why etrailer?

Polar Hardware Enclosed Trailer Parts - 383400

  • Doors
  • Door Hardware
  • Door Holder
  • Hook and Keeper
  • Polar Hardware
  • 4 Inch Hook
  • Steel


The hook and keeper is used to hold doors and windows open on your enclosed trailer.

  • One piece is mounted to the side of the trailer, the other is mounted to the door
  • Mounting hole spacing: 2-5/16" (horizontal) x 1" (vertical) - center to center
  • Zinc plated
  • Hook is 4" long


00009 Enclosed Trailer Door Hook and Keeper







Video of Hook and Keeper for Enclosed Trailer Door - Zinc Plated


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Redline Enclosed Trailer Door Hook and Keeper Installation

Speaker: Today on our enclosed trailer, were going to be installing the Redline Enclosed Trailer Door Hook and Keeper, part number 383400. Were going to be replacing these old broken hook and keepers here on this trailer. They have the old plastic style and they just dont hold up very well. As you can see here, this ones broken completely on the end, so its not even useable. Now, well first need to remove each side, which are held in by these 4 screws, 4 on this one, as well as 4 over here on this side. Ill go ahead and take the screws out first. Now with our 4 screws removed, we can take the old hook portion off the trailer.Now that we have both of the old pieces removed, well go ahead and wipe off the dirt before we install the new ones.

Heres our new keeper portion of the bracket and heres the new hook portion. Well be attaching the keeper to the rear door and the hook portion will go here on the side of the trailer. Were going to go ahead and reuse the screws that we removed from the old brackets.Well go ahead and put our keeper portion on the rear door, again using the same hardware that we removed. Now that we have all of our hardware tightened down, lets go ahead and show you how the hook and keeper work. Go ahead and push the door all the way open.

Well go ahead and take our hook here. Well lift it up, slide it into the keeper, slides down. Now you can see our door cannot come back closed. You can see here our door is secure in the open position. To undo the keeper, you simply slide upward, let it go back down and now your door is able to be closed.Thatll do it for our installation of the Redline Enclosed Trailer Door Hook and Keeper, part number 383400.

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Customer Reviews

Hook and Keeper for Enclosed Trailer Door - Zinc Plated - 383400

Average Customer Rating:  4.8 out of 5 stars   (279 Customer Reviews)


- 383400
by:

Good product. Timely delivery of items. Purchased 4 for 2 trailers to replace the dry-rotted factory plastic ones. 711891



- 383400
by:

Great Quality!!! Fast Shipping!!!!! 636688



- 383400
by:

Holds door open during loading. Just what I wanted. Extra bonus, the moving part of the latch is spring loaded wo it stays flat when not in use and it does not rattle, or get in the way. 212628



- 383400
by:

The initial part I received was broken. I sent an email expressing concern and just received a generic response. It appears that my 1st email went to the wrong address. I received a follow up email and etrailer sent a replacement with no questions asked. I replaced an existing door keeper and this one matched the holes perfectly. I don't know if it is alignment or the angle of the door but sometimes the hook does not want to drop right into the keeper. The part works and I did get great support from etrailer once I got to the right person. 205718



- 383400
by:

Excellent product. Quick delivery. Outstanding tracking site. I have a V-nose trailer so I had to do a simple modification to the hook in order to mount the latch to the trailer. Rivets were used to secure the hardware to the trailer. Excellent product and service. 37591



- 383400
by:

Order parts shipped quickly and I’m very happy as usual with etrailers service 728169



- 383400
by:

Installed and works great. Still strong one year later. 727798



- 383400
by:

These door keepers are exactly what I ordered. They are cad plated and I expect them to last a long time. The hole pattern matches the old crazed plastic ones, so that will save me some time. 720150



- 383400
by:

Super fast delivery! Excellent item (RV door catch) Made of steel & very strong compared to the original plastic one that most RVs come with. Easy to install & looks NICE! 708260



- 383400
by:

Product work great 706358



- 383400
by:

just as the description said and on time. would recommend to others. thx 706151



- 383400
by:

I felt like I got my order in a reasonable time and everything I ordered came. The order was packaged well. I will order from etrailer in the future. 703094



- 383400
by:

The part fit perfectly. 699743



- 383400
by:

Wonderful Price. Great product 697516



- 383400
by:

Fast ship good products 697283



- 383400
by:

Replacing broken plastic with metal 696158



- 383400
by:

works and fuctions better then the original one 695002



- 383400
by:

Excellent product, just what I needed. 691276



- 383400
by:

Perfect fit to replace my rusted 12 year old door hold. I had to bend the arm to match the bend in my OEM parts. 691004



- 383400
by:

great fit for my US cargo trailer> 689932



- 383400
by:

everything fit like a glove 680958



- 383400
by:

These guys are great.package arrived on time and I was able to track my order. 681237



- 383400
by:

Have not installed but looks to be great quality. 668319



- 383400
by:

Fast shipping. Great product. 664654



- 383400
by:

Used product on cargo side door used 3M tape to attached bracket with arm to trailer, the other to door...works very well. 658632



- 383400
by:

Great product and great service. 655810



- 383400
by:

Parts worked like a charm. As always, good reliable products are sold by this business! 650738



- 383400
by:

Great product. Great company...used it to hold outswinging shed door to 2x2 post..works great !!! 650033



- 383400
by:

Good and sturdy as I was hoping it would be. I painted it white to match siding on trailer where I installed it to make it more appealing. It replaced a plastic OEM type that cracked too easily. Yep it did what I wanted it to do. 649538



- 383400
by:

Great product and great service. 649509



- 383400
by:

Perfect match 637226



- 383400
by:

etrailer is one of my favorite companies to deal with. The shipment is always fast and the price is right. Best of all, extensive knowledge base available online makes it very easy to find the right part and the instructions how to install it. This purchase is just another example who etrailer is a great company. 636531



- 383400
by:

This worked out perfectly. Strong and robust. It fits really tight that it takes a little muscle, but all in all, it holds against the wind. 635605



- 383400
by:

Products came fast and were just as des cribed! 633574



- 383400
by:

Good retainer for door. 629016



- 383400
by:

Received parts for my enclosed trailer today. Very prompt. Well packaged. Thanks 609376



- 383400
by:

Yep I got it all good thank you!! 608644



- 383400
by:

Good product 606699



- 383400
by:

It was exactly the part I needed for my trailer. I didn’t need to drill new holes It fit perfectly. It was delivered in a timely fashion. Thanks etrailer. You are my go to every time. 594572



- 383400
by:

It does the job exactly as expected and does not break like the plastic stuff. 586101



- 383400
by:

I was tired of having to use my spare tire, or something else, to keep my trailer door from closing on me when loading or unloading. This will take care of that problem for me. Quality seems to be good and installation was a breeze. 585179



- 383400
by:

Very Good 581944



- 383400
by:

Very sturdy, easy to install. Perfect upgrade. Was able to pick up all the items I needed at etrailer.com. Quick and simple! 576146



- 383400
by:

Received product earlier than expected. Haven’t put latch on trailer yet but it is made of very good quality and I know will be an asset to my enclosed trailer. Will order from this company again! 574234



- 383400
by:

Great product. Perfect fit. Better than orig. 574069



- 383400
by:

Excellent service and rapid delivery. Product as described. 568849



- 383400
by:

Exactly what I needed! Excellent servic e! 567040



- 383400
by:

Three were great and one was very weak. 560781



- 383400
by:

perfect fit 559651



- 383400
by:

Perfect fit replacing my original hook on my horse trailer! 558810


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Ask the Experts about this Polar Hardware Enclosed Trailer Parts

Do you have a question about this Enclosed Trailer Part?


  • Door Keepers for Enclosed Trailer Doors
  • We only have the door keepers available in 4 inch. We have the stainless steel # PLR9-SS, Aluminum # PLR9-A, and Zinc # 383400. We also have some plunger and socket and stem and socket options, but these have less space. I've linked the page to further assist.
    view full answer...

  • Is Paneloc Slam Latch with Cover Available with Keeper
  • The Paneloc Slam Latch with Cover # F709-204P011 that you referenced is not available with a keeper and we don't have one that will work with it. We do have hook and keeper assemblies like the Polar # 383400 that include both components but nothing for a slam latch like this one. I have attached a link that will take you to our complete selection of trailer door parts that you can also look through.
    view full answer...

  • Installing Trailer Door Hook and Keeper # 383400
  • You will usually see the hook portion mounted on the trailer door, with the keeper connected to the side of the trailer, but there is no reason why you could not install it the other way, if you wish. Just to be certain, I checked with the manufacturer who told me the same thing.
    view full answer...

  • Why Doesn't Enclosed Trailer Door Hook and Keeper # 383400 Come with Install Screws
  • The Enclosed Trailer Door Hook and Keeper # 383400 does not come with new screws because different applications will require different fastener styles and lengths. So instead of giving screws that would end up getting misused in some applications they let the customer decide what would be the correct install hardware to use. I attached an install video for you to check out as well.
    view full answer...

  • Hook and Keeper for Haulmark Trailer with Longer Hook
  • The longest hook and keeper setup we have for trailer doors is the part # PLR9-SS which has a 4 inch hook. Most standard sized hooks are 4 inches so this would be longer.
    view full answer...

  • Availability of Brackets that Hold Trailer Doors Open
  • We have brackets that hold trailer doors open like what you mentioned. We have the part # 383400 for a metal bracket style. Or if you wanted a plunger style that would just require you to push the door in place you would want the part # DH39R.
    view full answer...

  • Solution to Hold Swinging Trailer Doors Open
  • What we have is a Hook and Keepr # PLR9-SS in stainless steel, # PLR9-A in aluminum, and # 383400 zinc plated. These are used to hold trailer doors open similarly to how you are using a hook and chain. One piece is conneted to the side of the trailer and the other is connected to the door. The hook slides inside of the keeper when open to hold the door in place.
    view full answer...

  • Replacement Latch Part for 1994 Fleetwood Bounder Motorhome
  • RV makers do not maintain any specs on smaller items like door hardware they install on their motorhomes so we have no way to look that up for you. Since I don't know which particular type of latch you need to find a replacement part you can use the linked pages that display the various door parts we offer, such as Hook and Keeper # 383400. If you like you can email me your photos of the door/compartment for which you need the latch part and I will be glad to help you find the right item.
    view full answer...

  • Hook and Keeper on Side Door of Haulmark Trailer
  • The Zinc Plated Hook and Keeper # 383400 is a universal fit so it will likely work on your Haulmark trailer. It's a 4 inch hook with mounting holes that are spaced 2-5/16 inches horizontally and 1 inch vertically.
    view full answer...

  • Holding Trailer Doors Open Using Plungers or Hook and Keeper Holders
  • Regarding the man door and the awning, is there any way that you can attach the plunger style holder, # DH605, to the support are for the awning that is causing the interference? Otherwise, you could use something like the hook and keeper, # 383400. If they were placed near the door hinges you could probably configure it to hold the door open where it will not interfere or shut. The same thing for the rear barn doors. The stress on the door keepers would be greater the closer they are...
    view full answer...

  • Trailer Door Holder that Won't Accidently Release the Door
  • I do not have a way to test how much force it takes to pull the rubber stem from the socket # DH39R (no force gauge available) but having used this type of door keep before I can tell you that it usually takes a good jerk to free it up. When you want to be positive that the door is going to stay open I recommend using a hook and keeper such as # 383400. I have linked a video review for you.
    view full answer...

  • What are the Dimensions of the Enclosed Trailer Door Hook and Keeper # 383400
  • I went out to the warehouse and pulled Enclosed Trailer Door Hook and Keeper # 383400 to measure it. First, the mounting holes are 2-5/16 inches across on center and 1 inch top to bottom on center. The mounting plates for both pieces are 3 inches by 1-3/4 inches. From the center of the hook piece to the end of the hook is 4 inches. The hook piece sticks up 1/2 inch from the mounting surface. The keeper piece sticks up 3/4 inches from the mounting surface. I have also included...
    view full answer...

  • Latches for Securing Ramp on Open Landscaping Trailer
  • Without knowing the dimensions and weight of your ramp it is hard to make a specific product recommendation but we do offer all sorts of trailer hardware. You might do well with an inexpensive hook and keeper like # 383400 or # PLR9-SS, or a spring latch like # SL716. I recommend using one latch on each side of the ramp.
    view full answer...

  • Bolt Hole Dimensions for the Enclosed Trailer Door Hook and Keeper # 383400
  • I attached a picture that has all of the mounting hole dimensions for the Enclosed Trailer Door Hook and Keeper # 383400 that you referenced. You would need to compare them to what your trailer has to see if it would bolt right up.
    view full answer...

  • Trailer Door Hook and Keeper are Not Lined Up Properly on a Outback Enclosed Trailer
  • So when you open the door and swing the hook part out to meet the keeper the door hits the fender before the 2 can reach each other? If that is the case then I would agree that somewhere along the line a mistake was made. The only hook and keeper we have is # 383400 and the hook is just 4 inches long. The best solution is to move the hook and/or keeper. It sounds like the screws used are Torx style or something similar. A hardware store should have the appropriate tool to remove and...
    view full answer...

  • Recommended Door Holder for Fender Mounting
  • The Plastic Stem and Rubber Socket Door Holder - 2" Long Stem # DH39R can be installed onto your fender if desired to allow your door to be secured open. You can alternatively use a Hook and Keeper for Enclosed Trailer Door # 383400 in another location like mounted to the fender to give you a similar option. There is not an option we carry that is long enough to allow connection to the main trailer wall when the fender is making contact with the door.
    view full answer...

  • Will Enclosed Trailer Door Hook and Keeper 383400 Work on a Heavy Horse Trailer Door
  • Even though the door on your horse trailer is heavy the door keeper # 383400 will still hold it open. Nearly all of the door's weight will be on the hinges and the keeper is just preventing it from closing. The keeper is not really supporting any weight so it will work well for you. I have linked a video showing an example installation.
    view full answer...

  • Recommended Strap Hinges For 4 x 8 Foot Doors for Enclosed Trailer
  • What you're planning sounds like it would work, but you'll need to be sure you have some cross members in the door where each hinge mounts. Since the doors are large and are likely pretty heavy, I'd use the biggest hinges you can. If you were wanting the hinge to swing all the way up against the side of the trailer, I'd recommend using # 2212. A hook and keeper, part # 383400 would hold the door open for you as you load/unload. If you only need the door to swing 180 degrees, use #...
    view full answer...

  • Can a Horse Trailer Back Door be Left Open or Will it Damage the Hinges
  • It really depends on how heavy the door is, how far it sticks out from the hinges, and how big the hinges are. You could technically say the same thing about any door that mounts on hinges. So the doors in your house you would not necessarily be closed all the time. But at the same time the distance between the ground and the bottom of the trailer door is greater than that on a door in your house. In other words, a sagging door in a house would only go so far before being held up by...
    view full answer...

  • Bolt Hole Pattern of Polar Hook and Keeper for Enclosed Trailer Door 383400
  • They are indeed. Vertically, the holes of the # 383400 hook and keeper are 1 inch apart and 2-5/16" apart horizontally as shown in the photo I've edited for you. If you click the provided link, you can see an installation video.
    view full answer...

  • What Position Should the Hook and Keeper for Enclosed Trailer Doors Be Mounted In
  • Correct, the mounting holes on the Hook and Keeper for Enclosed Trailer Doors part # 383400 are 2-5/16" apart top to bottom (vertically) and 1" apart left to right (horizontally). The actual plate measures to be 3" tall x 1-3/4" wide. Therefore, it is taller than it is wider. I have attached a few photos to clarify the above.
    view full answer...

  • Replacement Vent Cover with Continuous Hinge for 2018 Puma
  • Since you have a continuous metal hinge for your 2018 Puma bathroom vent cover we have exactly what you need with part # BV0554-03. I'm not 100% sure what you mean by hook to keep the side door open unless you are referring to something like part # 383400. As far as the back screen vent with windows goes I would need to see a picture of that as well to see if we have anything like that for your application. I have attached a link to the variety of products that we carry for campers...
    view full answer...


Do you have a question about this Enclosed Trailer Part?




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Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Installed by:
Jeff D
Video Edited:
Chris R
Updated by:
Sarah W
Updated by:
Amanda M

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