When or Why Do I Replace my Lippert 1621 Pin Box

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

Products Featured in This Question

Lippert 1621 5th Wheel Pin Box - 15,500 lbs

(69)

$601.41

Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1621 or 1621HD - 18,000 lbs

(86)

$700.26

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.

asked by: Pradeep R

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.

expert reply by: Randy B