Overview
The B&W Trailer Hitches RVB3670 is an OEM companion replacement slider base, part number RVB3670, with UPC 843233003925. It is a universal fit base.
Compare the dimensions, weight and material of your current companion slider with this base to confirm a match. Measure the old slider before choosing this part.
Key features
- OEM companion replacement slider base
- Universal fit, with no vehicle named
- Part number RVB3670 with UPC 843233003925
- Brand is B&W Trailer Hitches
Fit and wear checks
A companion slider sits between the trailer and the fifth wheel head and carries part of the hitch load, so its fit affects how the trailer tracks on the road. Before any swap, measure the old base’s hole pattern and the spacing of its sliding path, then compare those measurements with the new base. Small differences can mean the replacement will not seat correctly.
Inspect the surrounding parts as well, including the head’s latch, pins and any bushings. Wear in those parts can make a new base feel loose even when it is correctly installed. After the first few hookups, recheck fasteners and listen for knocks or clicks while driving, and address any movement before the next trip.
- Compare hole patterns before removing the old base
- Inspect latches, pins and bushings at the same time
- Recheck fasteners after the first few hookups
Specifications
| Brand | B&W Trailer Hitches |
|---|---|
| Part number | RVB3670 |
| UPC | 843233003925 |
| Product type | Companion replacement slider base |
| Fitment | Universal fit |
| Dimensions and material | Compare the dimensions and material of your current companion slider with this base before ordering. |
Vehicle fitment
Universal fit means the match depends on your hitch layout rather than a year or model. Confirm your vehicle’s year, model and trim before ordering.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Measure your current companion slider and compare it with this base before removing it, so you know the swap will line up. Slider bases carry significant hitch loads, so have the finished installation inspected before towing.
What’s included
Check the package contents against your installation before starting, including whether hardware is included.







