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Determining Pin Box of 2019 Keystone Montana 3701LK for Cushioned Upgrade  

Updated 10/30/2025 | Published 02/12/2025

Question:

I have a 2019 Keystone Montana 3701LK. Will this fit the model I have? If not, what model is appropriate for the trailer I have? Thanks,

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Expert Reply:

Hey Jim, I would need to know what pin box you have on your 2019 Keystone Montana 3701LK to be able to determine which pin box replacement you need. Can you check the pin box on there currently and see if you can find the tag with the info on it and get me the numbers? Or if you check out the attached help article you can see how to measure your current pin box to determine what you have.

expert reply by:
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Jameson C
Jameson C. profile picture
Etrailer Expert

Jameson C.

10/30/2025

Hey Jim, were you able to find the tag or take the measurements on your current pin box for the Keystone Montana? Once you have that info, I can help confirm if the Curt Helux pin box is the right fit. Let me know what you find—I'm here if you need a hand narrowing it down.

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