Replacement Seals for Extang Trifecta 2.0 Tonneau Cover on 2020 GMC Sierra
Updated 09/01/2026 | Published 08/26/2026
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Question:
I have a 2020 GMC Sierra with a 8foot bed. I had a Trifecta 2.0 cover by Extang installed new in 2020. It is leaking pretty bad. I need the cab, both sides and end gate seals and the corner foam pads. Can you provide part numbers to order? Thankyou Keuth
asked by: Keith N
Expert Reply:
Hey Keith!
For your Extang Trifecta 2.0 tonneau cover, we have the replacement seals you’ll need to freshen up the perimeter of the cover.
For the cab end, you’ll need the Replacement Cab Seal # EX32000120. For the side seals, you’ll need the Replacement Side Seal # EX32560368. Since you have the 8' bed, you’ll need three of the # EX32560368 seals to cover all of the folding sections.
You’ll also need the Replacement Tailgate Seal # EX32563200 for the rear of the cover.
The corner foam pads are the one part I’d want to verify against the exact model number of your Trifecta 2.0 before ordering, since Extang has used different corner seals on different versions of this cover. If you can send me the model or serial number from the cover, I can make sure we get you the correct corner pads as well.
Since yours is leaking pretty badly, I’d recommend replacing all of the perimeter seals at the same time rather than trying to isolate just one leaking section.
Is the cover leaking mainly around the edges, or are you also seeing water come in around the hinges between the folding panels?
Product Page this Question was Asked From
Replacement Side Seal for Extang Solid Fold 2.0 Tonneau Covers
- Accessories and Parts
- Tonneau Cover
- Seals and Gaskets
- Extang Solid Fold 2.0
- Side Seal
- Extang
more information >
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Keith N.
9/1/2026
Jerry, Thankyou for the info! Model # from what I see is 94458 Serial# looks like 9445820155553 The tag is pretty weather beat, and my receipt only has 94458. Keith