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When or Why Do I Replace my Lippert 1621 Pin Box  

Updated 07/09/2020 | Published 07/07/2020

Question:

Hi I have got one of the kingpin box model : LIPP1621. Can the kingpin can be replaced or should we change the complete box. Also when do we know the kingpin is out of manufacturers wear limits. How do i buy if i just need the kingpin only , Not complete box. Early reply would be much appreciated.

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Expert Reply:

Generally Pin Boxes will last the life of the trailer. Some cases where the pin box has experienced alot of chucking and bucking they can see wear. There isn't just a king pin replacement available so you want the Lippert 1621/1621HD 5th Wheel Pin Box part # LC1191191 for a standard replacement or the Trailair Rota-Flex 5th Wheel Pin Box part # LC328330 for a little upgrade.

I really like the Rota-Flex unit because it makes for a much nicer ride quality. Check out the video I did on it below.

Keep in mind with the standard you will not be replacing the side plates unless they are bent or damaged.

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Randy B
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