How to Measure For Correct Curt Flex Air Pin Box For 5th Wheel Trailer
Question:
I am looking for a pin box upgrade on a 2012 K-Z Inferno 3710 and interested in the Flex Air. Can you provide a part number that is compatible? The identification label on the factory pin box is long gone. Thank you
asked by: Matt
Expert Reply:
You'll need to take some quick measurements to determine the correct Curt Flex Air pin box for your K-Z Inferno 3710, as we don't have any way of knowing what pin box you had on it. The measurements are simple, as they are just the distance between bolts.
I have added a link below to a help article called "4 Steps to Choosing Your 5th Wheel Pin Box" and if you scroll down a bit in the article, it walks you through the measurements that are needed. Once you determine the pin box you have, you can choose the right Flex Air, so long as it is one of the following:
- Lippert 1621: Flex Air 5th Wheel Pin Box - 21,000 lbs # LC369535 or 18,000 lbs # LC328492
- Lippert 0719: Flex Air 5th Wheel Pin Box - 18,000 lbs # LC328484
Products Referenced in This Question
Trailair Flex Air 5th Wheel Pin Box - Lippert 0719 - 18,000 lbs
- Fifth Wheel King Pin
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 18000 lbs GTW
- Fixed Turret
- Lippert 0719
- Lippert
more information >
Curt Flex Air 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs
- Fifth Wheel King Pin
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 18000 lbs GTW
- Fixed Turret
- Lippert 1621
- CURT
more information >
Product Page this Question was Asked From
Curt Flex Air 5th Wheel Pin Box - Lippert 1621 - 21,000 lbs
- Fifth Wheel King Pin
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 21000 lbs GTW
- Fixed Turret
- Lippert 1621
- CURT
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: MORryde Cushioned 5th Wheel Pin Box for 14K to 18K Trailers w/ Dexter 221002300 or Leland 7920/7921
- Search Results: upgraded pin box
- Search Results: flex air pin box
- Search Results: bearings
- Video: Review of MORryde Fifth Wheel King Pin - Upgraded Pin Box - MR52VR
- Q&A: Trailair Pin Box Recommendation to Replace Leland 7920 Pin Box
- Shop: Trailair Air Ride 5th Wheel King Pin - Leland 7920 - 21,000 lbs
- Article: 4 Steps to Choosing Your 5th Wheel Pin Box
- Q&A: Sidewinder Rotating Turret Premium Pin Box Coupler for Leland 7920
- Shop: Dexter Hydraulic Trailer Brake Kit - Uni-Servo - 12" - Left and Right Hand Assemblies - 5.2K
- Q&A: Trailair Pin Box for Leland 7920 OEM Pin Box
- Video: Review of Lippert Fifth Wheel King Pin - Upgraded Pin Box - UF35-946208
- Q&A: 5th Airborne Pin Box to Replace Leland 7920
- Q&A: Recommended Upgraded Pin Box Replacement For A Leland 7921 Pin Box
- Search Results: b&w companion
- Search Results: leland 7920
- Search Results: pin box
- Shop: Fifth Wheel Hitch
- Shop: Curt A16 5th Wheel Trailer Hitch for Ram Towing Prep Package - Dual Jaw - 16,000 lbs
- Shop: Curt E16 5th Wheel Trailer Hitch for Ram Towing Prep Package - Slide Bar Jaw - 16,000 lbs
- Shop: MORryde Cushioned 5th Wheel Pin Box for 11.5K to 14K Trailers w Dexter 221002300 or Leland 7920/7921
- Shop: Curt A30 5th Wheel Trailer Hitch for RAM Towing Prep Package - Dual Jaw - 30,000 lbs
- Video: MORryde Storage Reel with Hand Crank Manufacturer Demo
- Search Results: cord reel
- Article: Parts Required to Add Electric Over Hydraulic Drum Brakes to a Trailer
- Shop: RV Jack Pads
- Shop: RV Antenna and Radio
- Shop: RV Exterior Lighting
- Video: Dexter Axle Trailer Brakes - Hydraulic Drum Brakes - 23-324-325 Review
- Q&A: Recommended Replacement Pin Box for Lippert 182209 1621 on 2010 KZ Durango LX
on Fifth Wheel King Pin
