May 27, 2015 · If your 3b measurement equals 16-7/8 inch you have the medium style pin box and could use the Trailair Flex Air 5th Wheel Pin Box, # LC328484, for a direct replacement. Prices are listed on each product's page.

The Fontaine 6000 Series pressed steel fifth wheel cuts weight without cutting performance or load rating. The proven design was made possible by Finite Element Analysis technology and strategic placement of high strength alloy steel. This lighter 6000 Series No-Slack® fifth wheel combined with NWB mounting

There are 4 steps to measure your pin box and determine what pin box number you have: Find your pin box style using our guide below (short, medium, long, or telescoping). Measure your existing pin box's bolt pattern using our simple guide. Determine your pin box number based off those measurements using the charts below.

The switch on your pin box is probably the breakaway switch. One wire from the switch will go to a 12v battery on the trailer and the other wire will tap into the electric brake wire on the trailer (typically a blue wire). I have attached an installation video for a breakaway kit to give you an idea of how it is installed.

Follow These Steps to Determine the Pin Box Replacement Model: 1. Look for the white sticker with a 4-digit number on it (ex. 1621 or 1716). 2. What is the gross vehicle weight rating (GVWR) of the unit? 3. Visually compare illustration to the mounting wing on the 5th wheel. 4. Measure length of box (front row of bolts to center of kingpin E). 5.

Congratulations on the purchase of your MORryde Pin Box System. This revolutionary new system redefines the experience of towing a 5th wheel. No longer will you have to live with the harsh, jerky, back-and-forth motion associated with towing. You can also forget about

See zerk locations for proper fifth wheel lubrication. Manual Overide Pull Handle Hole. Locking jaw access (under wear plate). Locking jaw slides in for easy maintenance.

21K Rhino Box™ Pin Box Upgrades Aftermarket Manual. LCI Standard Pin Box Aftermarket Manual. Curt Rhino Box™ Pin Box Aftermarket Manual. IsoFlex™ Pin Box OEM Installation Manual. QR - 015: Standard Pin Box Measurement Guide. QR - 035: Pin Box Identification Guide. QR - 039: Trailer Tongue Weight Load Ratings.

tive ifth-wheel pin box technology. Our new Flex Air® Pin Box combines our time-tested Trailair air ride technology with our Rota-Flex® pivoting head to provide an unparalleled ride, eliminating chucking and the vertical tug-of-war bet.

Follow These Steps to Determine the Pin Box Replacement Model: 1. Look for the white sticker with a 4-digit number on it (ex. 1621 or 1716). 2. What is the gross vehicle weight rating (GVWR) of the unit? 3. Visually compare illustration to the mounting wing on the 5th wheel. 4. Measure length of box (front row of bolts to center of kingpin E). 5.