See what our Experts say about this Lippert 5th Wheel Pin Box

• Replacement Pin Box Needed to Tow a 2018 Reflection 337RLS with a PullRite SuperLite
  I spoke with someone over at PullRite who said that they have heard from customers that a standard pin box that doesn't have any cushion actually tows better with the PullRite SuperLite 4P 20,000lb hitch that you are using. Since the hitch comes with an adapter for the king pin all that we need to know is the model number of your current pin box. This can actually be found on the pin box itself. There should be a sticker that has a series of numbers on it. It should reflect one of the...
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• Dimensions Of Holes On Lippert 1621 5th Wheel Pin Box
  I went to our warehouse and measured the holes you mentioned you wanted the measurement for on the Lippert 1621 5th Wheel Pin Box, part # LC1387882. The holes measure 3/8 inch diameter. I have also attached a drawing of this pin box with the dimensions shown from a side view.
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• What is Difference Between Lippert 1621 and Lippert 1116 Pin Boxes
  Mainly the difference is the Lippert 1116 is considered a medium length pin box and the 1621 is considered a long one. It's not by much but the 1621 stick out about 3 inches further.
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• Recommended Replacement FOr A Lippert Rhino Box On A 2022 XLR Nitro 35DK5 Toy Hauler 5th Wheel
  The Lippert Rhino Box has it's own bolt pattern so the Lippert 1621SHD # LC1387882 would not be a compatible fit. Instead you'll want a pin box like the MORryde Cushioned 5th Wheel Pin Box for 18K to 21K Trailers w/ Lippert Rhino # MR55QR, which is a compatible replacement. MORyde has a few different versions of this pin box so you'll want to get your trailer weighed while loaded to see where you're sitting at to choose the correct spring capacity for the best ride quality. 11K to 14K...
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• How Much Does a Lippert 1621 Pin Box Weigh
  Lippert 1621 5th Wheel Pin Box - 15,500 lbs Item # LC1191191 weighs approximately 100 pounds including the wings the pin box bolts to. Lippert 1621 5th Wheel Pin Box - 21,000 lbs Item # LC1387882 weighs approximately 115 pounds including the wings the pin box bolts to. The 20K Reese Goose Box # RP85FR that fits in place of the Lippert 1621 pin box weighs 170 pounds. I have linked review videos of each of these Goose Box adapters for you.
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• Is There a Difference Between Lippert 1621 Pin Boxes LC1387882 and LC1387883
  For all intents and purposes there is no difference between the Lippert 1621SHD part # LC1387882 and the Lippert 1621 # LC1387883.
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• Bolt Torque Value for Installing LC1387882 Lippert 1621 HD Replacement Pin Box
  If there's a conflict in the instructions provided by the RV manufacturer and what's stated by the manufacturer of a sub-assembly such as the # LC1387882 Lippert 1621 pin box, you'll want to go with the advice from the manufacturer of the sub-assembly as they'd have more knowledge about the part in question than the RV manufacturer would. Lippert confirms that 5/8 inch by 1-12 Grade 5 bolts should be used and torqued to 160 foot lbs.
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• Width of Lippert 1621 Pin Box
  The overall width of the pin box portion of the Lippert 1621 5th Wheel Pin Box # LC1387882 is 12 inches.
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• Can a Pin Box on a Fifth Wheel Trailer Be Raised to Lower Nose of Trailer
  The minimum bed rail to trailer overhang clearance we recommend is 6 inches, so if your setup is 9 inches currently and you need the nose of the trailer to come down still you could lower the pin box up to 3 inches to help level it out. You would need to unbolt the pin box and then raise it up higher to the next set of pin box holes to accomplish this.
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• Torque Recommendation for Bolts that Hold Pin Box to Trailer
  Pin box bolt torque is based on the size of the threaded portion of the bolts and not the wrench size. 1/2 inch Bolts GR5 90 ft-lbs 5/8 inch Bolts GR5 150 ft-lbs 3/4 inch Bolts GR5 275 ft-lbs
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• Can Holes on Top of Lippert Pin Box be Used for Mounting Level
  Sometimes the holes on top of the pin boxes like the # LC1387882 that you referenced can be used to attach a pin box cover, but if you wanted to use them to mount your AccuLevel # CAM25563 you definitely could.
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• Fifth Wheel Setup Is Too Tall With TrailAir Flex Air Pin Box and B&W Hitch
  The B and W Fifth Wheel hitches for your 2020 Chevy Silverado 3500 with OEM prep package like part # BWRVK3710 for the 20K or part # BWRVK3715 for the 25K are height adjustable so if you can lower the hitch and still be level, I recommend to try that first. You also want 6" of clearance between the trailer loft and the top of the bed rails. Around 11-1/2" is the recommended height in most states because of bridges but if you are conscious about how tall the trailer is, it is up to you...
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• Torque Recommendation for Pin Box Bolts
  Pin box bolt torque is based on the size of the bolts. 1/2 inch Bolts GR5 90 ft-lbs 5/8 inch Bolts GR5 150 ft-lbs 3/4 inch Bolts GR5 275 ft-lbs
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• Weight of Lippert Pin Boxes LC1191151 and LC1387882
  I spoke to my contact at Lippert and the 15k Pin Box part # LC1191151 that you referenced weighs 104 lbs and the 21k Pin Box # LC1387882 weighs 115 lbs. The 21k would be the stronger one.
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• Replacement Pin Box for 2016 XLR Thunderbolt by Forest River Trailer with Lippert 1621 Pin Box
  You currently have a Lippert 1621 pin box on your 2016 XLR Thunderbolt by Forest River. It's rated for 21,000 pounds and I suggest sticking with that since it's what the manufacturer put on their originally. The replacement part number depends on the reason you're looking to replace your current one: Direct Replacement # LC1387882 21,000 pounds Trailair Air Ride Fifth Wheel Pin Box # LC158778 21,000 pounds Reese Sidewinder # RP34FR 20,000 pounds Reese Goose Box Fifth-Wheel-to-Gooseneck...
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• Goose Neck Pin Box Compatible With A 1621 SHD Pin Box
  According to Lippert the only difference between the 1621 HD and 1621 SHD pin box is the HD has an 18,000 lb capacity and the SHD has a 21,000lb capacity. Since your current pin box is a 1621 SHD I would not recommend the Reese Goose Box 5th-Wheel-to-Gooseneck Item # RP85FR as it only has a capacity of 20,000 lbs. Both, Item # GY38FR and Item # GY66FR, have a 25,000 lb capacity so either would be suitable as far as weight limitations. Both have auto latches and will replace a 1621 SHD...
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• 5th Wheel Hitch and Trailer Pin Box Height Adjustment
  When a 5th wheel hitch's height is raised to increase clearance between the bottom of the trailer overhang and the tops of the truck's bed rails this can put the trailer into a nose-high orientation. Since trailers tow best when they are level it can be necessary to then also shift the pin box upward on its trailer mounts to restore the trailer to a level stance. Sometimes adjusting the pin box upward will allow for that extra clearance and still allow the trailer to be close to level...
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• Recommended Replacement Pin Box For A 2017 Forest River Thunderbolt 422AMP
  When it comes to a replacement or an upgrade pin box you'll need to determine the pin box that you currently have. You will need to find the pin box's manufacturer name along with the pin box number which is typically located on a sticker on the side of the pin box or king pin itself. If you are having trouble finding the number you will have to measure the pin box I will put a link below showing how to measure your pin box. Unfortunately there isn't a database that allows us to see what...
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• Bolt Diameter for Lippert 5th Wheel Pin Box
  Correct, for the Lippert 1621SHD 5th Wheel Pin Box, # LC1387882 and other pin boxes, reference is for the bolt diameter not wrench size.
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• Why Do I Need 5 or 6 Inches Of Clearance Between Trailer and Bed Rails
  The general rule is 5 or 6 inches clearance needed between the trailer loft and the bed rails is mostly to do with situations when the fifth wheel may take a deep dip like a pot hole or entering a steep drive. Without proper clearance the bed rails and trailer loft may make contact causing damage. The slider provides clearance for turning so the trailer doesn't hit the cab of the truck so you still need bed rail clearance even with the slider. The 5 3/4 inches of clearance should be fine...
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• Which Pullrite Capture Plate to Use with Lippert 1621 Pin Box
  The Lippert pin box part # LC1387882 that you referenced is a standard Lippert 1621 so the Pullrite capture plate you'd need is the # 331704 which you'd have to get from Pullrite.
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• Which Replacement Pin Box for 5th Wheel with Fabex 520 Pin Box
  To replace your existing Fabex 520 pin box I recommend using the Reese 5th Airborne # 5AB-S500-700, which will provide you with a smoother ride because of the Air Ride coupler. This will be a nice upgrade for your 5th wheel and has a 21k capacity, so it'll work on most applications. If you need a rotating turret pin box then you can use the 5th Airborne # RP61412, which has a 16k capacity. Both of these pin boxes are compatible with a Fabex 520. I've also linked some review videos of these...
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• Recommended Best Replacement Pin Box for 2013 Forest River Thunderbolt XLR
  Your current pin box is a Lippert 1621 on your 2013 Forest River Thunderbolt XLR. There is not an air ride option for the Sidewinder that is over 16K. So with your GVWR of 18,000 lbs, you unfortunately will need to choose between the additional turning clearance of a Sidewinder and an air ride pin box. If you choose the Sidewinder, you will want the 20K # RP34FR. If you want the air ride without the additional turning clearance, then I recommend the Trailair Flex Air 5th Wheel Pin...
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• Replacement Pin Box for Lippert 1621
  For a standard Lippert 1621 pin box that comes with side brackets the part # LC1387882 that you referenced is what you'd need. If you were looking for a replacement that was cushioned we also have the Flex Air part # LC328492 which cushions vertically and horizontally to smooth out the ride quality.
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