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Replacement Trailair Flex Air Pin Box for 2021 Keystone Montana 3120RL

Question:

Here is a photo of the sticker on the pin box

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Expert Reply:

In order to choose the correct Trailair Flex Air pin box like the # LC328492, or any other pin box for that matter, is by checking the spec sticker on the current pin box for a model number. We don't have a database that tells us what pin box is on specific trailers, so you would need to either find the number on the sticker/plate or you can take some measurements of the bolt patterns to determine which one you've got. I've linked a brief article that explains this process.

The Trailair Flex Air # LC328492 is designed to replace Lippert 1621 pin boxes, so if your 2021 Keystone Montana 3120RL 5th Wheel has a Lippert 1621 pin box, it would be the correct replacement. If you find a different model number, please let me know what you find and I can help you locate the correct Trailair model for your 5th wheel.

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Question:

I am looking at buying a 2021 Montana fifth wheel model 3120RL. Which Trailair Air Ride 5th Wheel Pin Box should I get? My Truck is a 2019 RAM 3500 Crew Cab with an 8ft. Bed.

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Expert Reply:

Thank you for the additional information! I was able to confirm that you've got a Lippert 1116 model pin box, so you can use the Trailair Air Ride 5th Wheel Pin Box - Lippert 1116 - 21,000 lbs # LC155943. This is the confirmed fit for your trailer and will simply bolt on in place of your old pin box.

I've linked a review video of this for you to have a look at, as well.

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