Waterproofing MFT, rambox, and Diamondback cover

[RAMTrkGN]

I just installed the Diamondback SE on 2021 1500 with rambox and MFT. The cover is tough, secure. However, there are two large gaps on either side where the cover, the tailgate, and the rambox meet. Does anyone have a good way to seal these gaps?

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[RAMTrkGN]

Passenger side

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[zj4x4]

Interesting, my Lomax came with little flaps which somewhat help. I'm considering upgrading to the Diamondback so this is good info. I wonder if you can get replacement flaps from Lomax (or Weathertech, who OEMs the Lomax cover).

 

[zj4x4]

BTW - if you have pics I'd love to see them. It looks like you and I have the same color trucks.

 

[stronbl]

I just installed the Diamondback SE on 2021 1500 with rambox and MFT. The cover is tough, secure. However, there are two large gaps on either side where the cover, the tailgate, and the rambox meet. Does anyone have a good way to seal these gaps?

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If you have not already done so, you might call the folks at Diamondback covers. I have a Ram 1500 with MFT and no Rambox so I can't really help, but I talked the the Diamondback folks and they really seemed keen to help me resolve my issue. They have some other weather stripping materials on hand which may be of help. Could be worth a phone call and your pics. Good luck!

 

[RAMTrkGN]

If you have not already done so, you might call the folks at Diamondback covers. I have a Ram 1500 with MFT and no Rambox so I can't really help, but I talked the the Diamondback folks and they really seemed keen to help me resolve my issue. They have some other weather stripping materials on hand which may be of help. Could be worth a phone call and your pics. Good luck!

Great idea!

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[RAMTrkGN]

BTW - if you have pics I'd love to see them. It looks like you and I have the same color trucks.

Here's my Pearlie!

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[Ellisstrong]

Get this seal from eBay or Amazon. Let me figure out where I ordered it

ESI Front Rail Seal XL 5 1/2'... https://www.amazon.com/dp/B07147Y43J?ref=ppx_pop_mob_ap_share

 

[Venom700]

I also second ESI. https://extrudedsolutions.com/

They now make a kit for the MFT/Rambox.

 

[zj4x4]

Good tip, here's a link I found: https://www.amazon.com/dp/B08L21DGNB/ref=cm_sw_r_cp_api_glc_fabc_NmO4FbF08GHVP?pldnSite=1

 

[mikeru82]

Good tip, here's a link I found: https://www.amazon.com/dp/B08L21DGNB/ref=cm_sw_r_cp_api_glc_fabc_NmO4FbF08GHVP?pldnSite=1

That's what I used on my last truck. Sorry, no pics. I haven't added that to my new truck yet. It seemed to work well.

 

[WilburNJ]

I have exactly the same setup: DB cover on 1500 with ramboxes and MFTG. I used this from amazon and it fills in the space fairly well.

Amazon.com: ESI Front Rail Seal XL 5 1/2' EPDM Rubber for Truck Caps : Automotive

Buy ESI Front Rail Seal XL 5 1/2' EPDM Rubber for Truck Caps: Cargo Bed Cover Accessories - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

 

[Zeeya]

We guys have been working on this a while. We all have a little bit different material, but basically work towards the same goal. Keeping as much water out of the bed as possible. It seems like I have tried everything, but I know there are some more ideas coming in with the fresh group of eyes looking at it. My set up and so far has held up since around 8/19 and working in the heat of W Texas. I ended up taking some small pieces of black gorilla tape and covering the holes by the hooks for securing loads to keep dust and sand out.

 

[Bighamspam]

I have exactly the same setup: DB cover on 1500 with ramboxes and MFTG. I used this from amazon and it fills in the space fairly well.

Amazon.com: ESI Front Rail Seal XL 5 1/2' EPDM Rubber for Truck Caps : Automotive

Buy ESI Front Rail Seal XL 5 1/2' EPDM Rubber for Truck Caps: Cargo Bed Cover Accessories - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

Do you mind telling me specifically which truck bed cover you have? I am trying to surprise my husband with a cover for his 2021 RAM with Ramboxes. But I’m having a hard time. Thank you

 

[Whodeysrt]

Got the pearl and cover as well!

 

[WilburNJ]

Do you mind telling me specifically which truck bed cover you have? I am trying to surprise my husband with a cover for his 2021 RAM with Ramboxes. But I’m having a hard time. Thank you

Here’s the version I bought: https://diamondbackcovers.com/products/diamondback-hd-dodge-ram-1500-w-rambox?variant=32674437038179

This is the HD (heavy duty) version. There’s an SE version as well, which is less expensive and is meant for lower loads.

It took about 4 weeks (I think) to receive it after ordering.

Good luck!

 

[L A Kane]

This works great: https://www.amazon.com/dp/B08L21DGNB?psc=1&ref=ppx_yo2ov_dt_b_product_details

I used most of the weatherstripping designed for the bottom of the tailgate to augment the shims that Diamondback provides along the top and the square piece to fill those gaps between the rambox and the tailgate. There's still a little moisture but it appears to be condensation more than any rain getting in.

 

[dajogejr]

This works great: Amazon.com

I used most of the weatherstripping designed for the bottom of the tailgate to augment the shims that Diamondback provides along the top and the square piece to fill those gaps between the rambox and the tailgate. There's still a little moisture but it appears to be condensation more than any rain getting in.

That’s the kit I bought too, but I’m going to wait for a nice sunny warm day to clean and install on my truck.
Report back once that weather gets here..