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Replacement Plastic Dome Assembly for Ventline Vanair Trailer Roof Vent

Replacement Plastic Dome Assembly for Ventline Vanair Trailer Roof Vent

Item # BVA0502-03
Our Price: $30.94
You Save: 16%
RV Vents and Fans
Shipping Weight: 0.38 lbs
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Replaces a broken plastic dome assembly on your Ventline Vanair roof vent for motor homes and enclosed trailers. The dome assembly seals the vent when it is closed. Great Prices for the best rv vents and fans from Ventline. Replacement Plastic Dome Assembly for Ventline Vanair Trailer Roof Vent part number BVA0502-03 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (113)
  • Q & A (0)
  • Videos (1)
  • Photos

Ventline RV Vents and Fans - BVA0502-03

  • Replacement Lid
  • Roof Vent
  • Black
  • Ventline
  • Plastic

Replaces a broken plastic dome assembly on your Ventline Vanair roof vent for motor homes and enclosed trailers. The dome assembly seals the vent when it is closed.


  • Replaces dome assembly
  • Works with Ventline Vanair roof vent model VP-543
  • Smoke color
  • Measures 8-1/2" overall
  • Measures 1-3/4" high
  • Made in the USA

diagram of placement of replacement dome

BVA0502-03 Ventline Smoke Plastic Dome Assembly for VP-543 Vanair Roof Vent

Video of Replacement Plastic Dome Assembly for Ventline Vanair Trailer Roof Vent

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

Video Transcript for Ventline RV Vents and Fans - Roof Vent - BVA0502-03 Review

Speaker 1: Today we're taking a look at the Replacement Plastic Dome Assembly for Ventline Vanair Trailer Roof Vents. This replaces a broken assembly for your roof vent. It works with Ventline Vanair roof vent model VP-543. The dome assembly seals the vent when it is in the closed position. It's smoke in color, and it does come with the foam gasket pre-installed here at the base, and it comes with the necessary mounting hardware.A few measurements to go over with real quick, starting with the overall diameter. Outer edge to outer edge measures 8 and 1/2 inches.

The overall height is at 1 and 3/4 inches tall. You'll notice that is has two mount holes. Those mount holes are separated on center by about 6 and 1/2 inches, and the product is made in the USA. That's going to do it for today's look at the Replacement Plastic Dome Assembly for Ventline Vanair Trailer Roof Vents.

Customer Satisfaction Score:

Customer Reviews

Replacement Plastic Dome Assembly for Ventline Vanair Trailer Roof Vent - BVA0502-03

Average Customer Rating:  4.9 out of 5 stars   (113 Customer Reviews)

Replaces a broken plastic dome assembly on your Ventline Vanair roof vent for motor homes and enclosed trailers. The dome assembly seals the vent when it is closed.


James was great to work with over the phone. He knew his stuff and very nice to work with. He assisted me in making sure that the roof vent cover was the correct fit (and it was). It was an easy install and will keep the rain out during our wet Northwest winter.



It continues to work well after more than a year in use.


Exact replacement of the original plastic dome of my Escape 17B travel trailer’s bathroom exhaust fan. The original plastic dome was probably damaged by a hailstorm two winters ago. I saw two huge holes on top of that dome when I had a chance to inspect and wax my trailer this summer. I am so glad that there is an available replacement part from Thank you!

Tony R.


Still good!


The caps that I received were original replacement caps. Installation was fast with only two screws on each cap. Vents were close to the edge of the roof of my Airstream so I could replace them from the ladder. I was done in less than 30 minutes. The customer service was terrific and I got the caps in two days. With the new caps and gaskets, I am hopeful that our bathroom and shower will be drip-free.

John C.


Vent Covers are working great, Gaskets holding up better than original vents.


The part is exactly what I was looking for. In fact, etrailer almost always has what I am looking for but your prices are 30% above the norm. Hence, I try not to use etrailer and that is unfortunate. Camping World is similar, good products at exceptionally high prices.


Fits perfectly


Exact replacement .. two screws out and in .....the new vent cap was on and off camping in the Great Yukon Wilderness with no leaks.


Cover fit the "privacy room" vent of my 1985 UHaul VT travel travel perfectly. Price for item was competitive, delivery charge was very fair, and delivery was super fast!
Another great experience with!


Just installed the new vent caps, fit was perfect and installation easy.



The vent caps are holding up to being outside full time with no issues after one year.


Perfect fit for broken vent hood damaged by tree branches. Easy install with included hardware. Thank You


Perfect replacement part for my disintegrated roof vent on my 2013 Airstream Interstate Class B RV! Ordering was simple and I received the part within just a couple days. This was the ONLY place I could find this particular part.


Needed a replacement cover to replace a damaged one, and etrailer was the best place online to get one.


Had a bit of a rough time locating a replacement for our 2010 Airstream vent. My wife discovered it on etrailer and voila . . . perfect fit. Great service also.

Fun S.


The vent is performing just fine. No problems.


Parts fit as advertised. Easy DIY


Reasonable price, fast delivery, perfect fit


This replacement part was perfect for our Airstream, matched the original and took about 5 minutes to install. Also this is the second time I have ordered from etrailer and they were great to deal with. First order had issues because of a manufacturing defect on a 2" receiver hitch, but they took care of the problem and send a replacement very fast....great company to deal with.


This cover fit perfectly! I used it to replace an old broken one on my 1979 Dodge/Higgins Delta. I wish it was available in white (original color), but the color matched my trim nicely. I replaced both top covers to match & it was just a matter of time before the other cracked. Now that my RV is in a garage, it should outlast me. Thanx for the great service!


Arrived quickly and in good condition. Installed easily. So far I really like the extra couple inches of length over the old factory mirrors.



After a year it is still working perfectly. Keeps its setting even on very rough roads. Couldn’t be happier.


Perfect fit. Received a day early


This was quick and easy to install on top of my 1978 Airstream Ambassador, and it works great! For aesthetic purposes, I tried hard to find a chrome one, to no avail, so I 'settled' for black. However, I can hardly see it from the ground, AND it matches some black parts on my TV antenna-so it doesn't look out of place at all!

Also, every other website I looked at wanted to sell me the whole fan assembly for a minimum of $65. etrailer was the only site I could find that sells individual parts. Thank you, etrailer, I'll be back!


I was having a hard time finding this item in Canada and when I did find a vendor, they wanted [much more] I found what I needed at etrailer and for [much less] including shipping! And I received it in 9 days! Great service at a great price! Just wondering when you might be opening a Canadian Division because you would clean-up on any other online RV vendors here in Canada! Thank you!


Exactly what I was looking for at the right price. A crack in the original vent cover was the source of a leak. Step 1) duct tape. Step 2) Find a replacement. It was trickier than you would think. The price on etrailer was less than half of what it was Am***n. It pays to shop around and the shopping experience is personalized with real people following up on your purchase.


We have a colorado family vacation planned for the end of this month And my trailer went through a hail storm and had some vents hmmbroken out I really didn't think I had time to order parts and make needed repairs but etrailer got me the needed parts in no time and repairs were made with time to spare. Great job. Gil in tx.


was shipped quickly ,great price,exactly what I wanted,description and availability perfect, was same as original part,same manufacturer,will buy from again. Ventline Vanair Trailer Roof Vent - BVA0502-03


After searching everywhere for this vent cap replacement for my RV, I had finally found the 'exact' replacement at (identical to the original). Their price was lower than others that had advertised it; and many shipping options to fit your budget and speed. Many times, has come through for me for those 'hard to find' replacement parts for my RV.


This replacement vent fits perfectly! Best price out there!!

Show More Reviews

See what our Experts say about this Ventline RV Vents and Fans

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    I believe the part you're referring to on our site is the Replacement Plastic Dome Assembly for Ventline Vanair Trailer Roof Vent # BVA0502-03. I'm not finding a Ventline VC-467 model vent but this still may fit. The vent lid measures 8-1/2" overall, is 1-3/4" high, and the mounting holes measure 6-1/2" apart on center (see attached). If all of these specs match your current setup then this will work for you! Attached is a review video for you to check out as well.
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  • Replacement Ventline Plastic Dome Assembly for Vent Light and Fan about 8 Inches
    The closest size cover we have is 8-1/2 inches. It is the Replacement Plastic Dome Assembly for Ventline Vanair Trailer Roof Vent # BVA0502-03. I've attached a video to assist.
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  • Does the Replacement Plastic Dome Assembly Include the Foam Gasket
    On the replacement plastic dome assembly, # BVA0502-03, the foam gasket is included. I have included a picture showing it. The foam is not really a gasket, it is a strip of foam adhered to the dome. You can see in the picture where the two ends of the strip come together. The foam is not available by itself.
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  • Determining if Ventline Plastic Dome Assembly # BVA0502-03 Will Fit 2006 Airstream Motorhome
    The Plastic Dome Assembly # BVA0502-03 referenced in your question is designed to replace the dome on the Ventline Vanair Roof Vent model VP-543. If this is what is on your Airstream then this replacement dome will work perfectly. There should hopefully be a model/part number printed somewhere on the vent itself that you can look for to verify if this will work. I have attached a short video demonstration on this part that you can also check out. Unfortunately RV/trailer manufacturers...
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  • Will BVA0502-03 Replace Ventline 0503-1010
    From the research I did on the Ventline part # 0503-1010 the part # BVA0502-03 appears to be the exact same. They are both black and are replacements for the Van Air roof vents.
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  • Replacement Roof Vent Lid For 6" Ventline Fan Blade And Round Lid
    I wasn't able to find much information on the exact replacement for your Ventline AS-13 M-VA 203 roof vent. The only information I found said it had an overall width of 8-1/2" and uses a 6" fan. It sounds like you will need the Replacement Plastic Dome Assembly for Ventline Vanair Trailer Roof Vent # BVA0502-03. You can confirm if this is the correct lid for your fan by taking some measurements. First this lid is 8-1/2" wide with the 2 screw holes being 6-1/2" on center. The lid is 1-3/4"...
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  • Will A Ventline Replacement Lid Work With A MaxxAir MaxxFan Dome Roof Vent
    Hi Barb, Replacement lids like the # BVA0502-03 are unfortunately brand specific so it would not be a fit with your MaxxFan Dome Roof Vent # MA00-03812B. We don't currently offer the replacement lid for this model so I recommend reaching out to MaxxAir directly and I'm sure they'd be happy to send you a replacement. If not then you'd be looking at buying a replacement secondhand or completely replacing the vent. I'm also not quite sure if anything else might be damaged with your vent to...
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  • Replacement Foam Ring for Ventline Vanair Trailer Roof Vent Part # VP-543SP
    The foam ring on the Ventline Vanair Trailer Roof Vent part # VP-543SP is a weather seal that is used to help seal the dome on the fan assembly. If you continue to use the fan without the foam ring you would be subjected to leaks which could then short out the motor. If I had to guess I would say that the wax paper was not fully removed from the ring which then caused adhesion problems. Unfortunately, we do not offer the foam ring separately but we do offer the Replacement Plastic Dome...
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  • Replacement Vent Lid For an Unknown Vent
    Thank you for the photos. Because there are no markings on the vent, your best bet will be to use the MaxxAir UniMaxx Universal Replacement Lid # MA00-335002. This lid has a universal-fit hinge and hardware to fit Elixir, Ventline, Jensen, Hengs, and other roof vents. This is the best option for ensuring that you get a compatible lid.
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  • Replacement Cover And Motor For Ventline VP Vent Fan On 1992 Airstream
    We offer one round vent, part # VP-543SP for a camper. The opening for this vent is 6-1/4 inches. The replacement lid for this vent is part # BVA0502-03, and the replacement motor kit that is designed to fit Ventadome or Vanair roof vents is part # BVD0218-00.
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  • Potential Replacement Lid Options for a Bathroom Vent on a 2019 Forest River Sonoma Mountain Edition
    We carry replacement lids for RV roof/bathroom vents. Unfortunately your RV information does not tell me what vent that you have on your 2019 Forest River Sonoma Mountain Edition travel trailer. Often times the bathroom vent is a round vent, but it could also be a square vent. The correct replacement lid would depend on the model of vent you have. For instance the Replacement Plastic Dome Assembly for Ventline Vanair Trailer Roof Vent # BVA0502-03 fits the Ventline Vanair Trailer Roof...
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Info for this part was:

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