Replacement For Lippert 1621 Pin Box With 4 Bolt Hitch

Question

Question:

I think I have a lippert 1621 on my 2007 Keystone Everest 345S. Theres no tag on it but according to the measurements the LC328492 is the correct replacement. All the measurements match up but my hitch only has four 4 bolts and the chart says it should have six 6.

asked by: Clair R

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Expert Reply:

The correct replacement for your Lippert 1621 pin box is in fact The Trailair Flex Air 5th Wheel Pin Box # LC328492 and is rated for 18,000lbs; I did contact Lippert to confirm this, and they agreed this was information was accurate even though your hitch has only 4 bolts.

expert reply by: Bryce D

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Answer 1

Great question, Jeff! When the Rota-Flex first came out it renovated what a pin box could do and be, but at this point in time that technology is a little more dated and the Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box #325-GH-8040 is the "new…

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Answer 2

In general the aftermarket pin boxes do achieve a better clearance than the stock pin boxes simply because they offer more adjustability. The Trailair Flex Air 5th Wheel Pin Box #LC328492 will give you an additional 3-3/4 inches in length and the…

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Answer 3

When using a Trailair Air Ride Pin Box, like part #LC158778 that you referenced, you should inflate the air bag to the line on the shock once it has been connected to your 5th wheel hitch. I have attached a review video where you can see this process…

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Answer 4

The Trailair Air Ride 5th Wheel Pin Box does not have a pin weight capacity figure according to Lippert. Typically a trailers pin weight is 20% of the total weight of the trailer. That means your trailer should weight around 15,500 lbs. Trailair Air…

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Answer 5

I called Lippert and they told me that based on the serial number you said you have the pin box you have on your trailer is a 1621 HD. The Trailair Tri-Glide Air Ride 5th Wheel Pin Box, part #UF35-946229 is designed to replace your pin box. This has…

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Answer 6

I am sorry Lippert did not include their instructions with your Lippert Trailair Air Ride 5th Wheel Pin Box #LC158778 but I have included a link to them on the Lippert website. I also linked an image of page 3 from those instructions which shows the…

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Answer 7

Even though you weren't able to find a sticker or label on your pin box to determine the make and model number, I have a solution to be able to determine which pin box is on your 2011 Dutchman Voltage 3900. Selecting the style pin box and then…

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Answer 8

The Curt Flex Air 5th Wheel Pin Box - Lippert 1621, #LC328492, and other Curt Flex Air 5th Wheel Pin Boxes are designed to be direct replacements to your current pin box. The long jaw models, medium jaw descriptors you refer to simply identify the…

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Answer 9

The main difference between the Curt A-Series part #C24FR and Q-Series part #C97FR is the head and jaw design. The A-Series has dual interlocking jaws which form a much tighter grip on the kingpin than just a standard set that butt up at the end like…

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Answer 10

The Trailair Air Ride 5th Wheel Pin Box #LC328492 that you referenced, which is confirmed to work with the Lippert 1621 pin box on your trailer, features a distance of 21-1/2 inches from the center of the front row of bolts to the center of the king…

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Answer 11

The Trailair Flex Air 5th Wheel Pin Box - Lippert 1621 - 18,000lbs Item #LC328492 only has a fitment listing of 1621 but will also fit the 1621HD so it is the correct Flex Air replacement for your current pin box.

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Answer 12

I have spoken with my contact at Lippert before for the dimension you need for the #LC328492 that you referenced and the overall height from the top of the mounting bracket to the bottom of the king pin is 19-9/16 inches. You would need to compare…

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Replacement For Lippert 1621 Pin Box With 4 Bolt Hitch

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