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2020 Jeep JL 4-Door Hardtop Leaking at Back Door Driver Side — Expert Fix

Quick answer: A 2020 Jeep JL 4-Door Hardtop leaking at the Back Door Driver Side in Heavy Rain is almost never a bad door seal - it is the missing body-side weatherstripping Jeep left off the body, so the door seal has nothing to compress against. The permanent fix is adding body-side weatherstripping for the JL; most owners install it themselves in under an hour with no special tools.
Year
2020
Model
JL
Doors
4-Door
Roof
Hardtop
Leaks At
Back Door Driver Side
When
Heavy Rain
In William's words
I thought I figured out where the leak was coming from (front of door) then it started leaking from the back of the door. I even changed the door seals and that didn't change anything.
Tony's fix
Tony
TonyJeep Leak ExpertJeep Wrangler & Gladiator Water-Leak Specialist

Hello William,

That is actually very common with these JL Wranglers. Many owners initially
think the leak is coming from one specific area, such as the front of the
door, only to later notice water showing up near the rear of the door or in
multiple locations. This happens because the water is able to travel around
the inside body channels before it finally appears on the carpet or floor.

The fact that you already replaced the factory door seals and the leak
still continued is a strong indication that the issue is not the door seals
themselves. The root cause is typically the lack of a proper inner
body-side weather seal from the factory, which allows water to bypass the
outer seals entirely.

Our JL Leak Fix Kit was specifically designed to correct this issue by
creating the proper seal that the vehicle is missing from the factory. Once
installed, it helps stop the water intrusion and keeps the interior dry.

If you have any additional questions, please respond to this email or you
can call me directly to further discuss this matter.

Regards,
Tony

On Wed, Apr 29, 2026, 5:43 PM JeepLeakFix Submissions
wrote:

For this 2020 JL, the kit I'd reach for is the JL Leak Fix Kit.

★★★★★4.6/5from194 verified Jeep ownersRead the reviews →

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