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B&W Companion 5th Wheel Hitch King Pin Location with Axle on 2018 Ram 3500 Long Bed Crew Cab  

Updated 05/02/2019 | Published 05/01/2019



Question:

B&W companion 5th wheel hitch on a 2018 RAM 3500 crew cab long bed where should the king pin line up to. directly over the axle or forward or aft. and what should be my vertical clearance from the bed sides to the underside of the trailer?

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Expert Reply:

For your 2018 Ram 3500 Crew Cab Long bed, the king pin of your trailer will be centered on your axle. I have attached a photo of the 5th wheel rails # RP30035 you asked from to assist even though the Companion hitch will be slightly different in installation to give you another reference.

If you do not have the OEM puck system then you will use the Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches # BWGNRK1314-5W and then hitch # BWRVK3500.

If you do have the OEM prep package then you will use # BWRVK3600 which will fit in the 4 factory pucks.

There should be 6 inches of clearance between the top of the bed rails and the bottom of your 5th wheel trailer to allow turning clearance when vehicle isn't level with trailer. I've attached a photo to assist.

expert reply by:
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Jason S
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