"Capture Plates are a required component of the SuperGlide hitch
system. When the trailer is hooked up to the hitch, the Capture
Plate?s wedge isolates the king pin from turning in the fifth wheel
plate, causing the Cam Assembly to activate and allowing the
SuperGlide to move as turns are being made. Part #331756 fits most
Trailair Rota-Flex Pin Box Models.
Most applications slip over the king pin and are held in place by a
set screw. Follow the instructions below to determine your correct
1) Determine if manufacturer name and model number located on your
pin box are one of the options shown above.
2) To ensure correct fit, make the necessary A, B and C
A: Measure the king pin plate from side-to-side. This is the
important measurement. Be sure that this measurement is no
than 1/16? less than 13 3/8"".
B: Measure from the leading edge of the king pin to the leading
the king pin plate, which should be 5 3/8"".
C: Measure from the rear edge to the leading edge of the king pin
plate which should be 11 7/16""."
Some Products may contain chemicals such as DEHP, which can cause
cancer, birth defects or other reproductive harm. For more
information, go to www.P65Warnings.ca.gov.