B&W RVK3700 complete fifth wheel hitch. This listing supplies only the base in this photo, the lower structure the coupler sits on; the coupler head on top is not included

B&W Companion Fifth Wheel Base, Base Only for RVK3700, 20,000 lb GTW, Powder Coat (RVB3700)

$700.00
Freight shippingCalculated at checkout Only 1 leftIn stock now  Estimated delivery
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Features

  • Base only, no coupler head: This is the base of a B&W fifth wheel hitch on its own: the coupler head that holds the king pin is a separate part, and you need both to tow.
  • The base sets the rating: B&W fits one coupler head to many kits, so the base decides the rating. Your base's kit rating, GTW and pin weight, is listed with your part below.
  • Mounts like the kit: Each base mounts exactly as it does in its complete kit: into the factory bed pucks, into a B&W Turnoverball socket, or pinned into industry-standard rails. Your part's kit and mounting are listed below.
  • Takes the B&W coupler head: The head from the same kit pins onto the base's pivot arms: RVC3006 on Companion bases, RVC3200 on Patriot bases.
  • Powder-coated steel: The base wears the same medium gray powder coat B&W puts on the complete hitch.
  • Made in the USA: B&W builds its fifth wheel hitches in Humboldt, Kansas.

Description & Fitment

RVB3700 is the base only from B&W's 20K Companion Fifth Wheel Hitch for 2016-2019 GM Pucks, kit RVK3700, with no coupler head. B&W rates the complete RVK3700, this base plus head RVC3006, at 20,000 lb GTW and 5,000 lb pin weight. It sets over the factory pucks (GM factory installed puck system) in the bed of the 2016-2019 Chevrolet Silverado 2500 HD, 2016-2019 Chevrolet Silverado 3500 HD, 2016-2019 GMC Sierra 2500 HD and 2016-2019 GMC Sierra 3500 HD. B&W's RVK3700 sheet lists the pivot arms and the leveling spring under this part number.

Fitment & Compatibility

Chevrolet
Years Model Bed Notes
2016-2019 Silverado 2500 HD w/ Factory Installed Puck System
2016-2019 Silverado 3500 HD w/ Factory Installed Puck System
GMC
Years Model Bed Notes
2016-2019 Sierra 2500 HD w/ Factory Installed Puck System
2016-2019 Sierra 3500 HD w/ Factory Installed Puck System

Check your fit: your hitch is (or will be) B&W kit RVK3700 with coupler head RVC3006. Trucks, per B&W: 2016-2019 Chevrolet Silverado 2500 HD; 2016-2019 Chevrolet Silverado 3500 HD; 2016-2019 GMC Sierra 2500 HD; 2016-2019 GMC Sierra 3500 HD, with the GM factory installed puck system.

Not for: other B&W kits, which take a different base: RVB3300 (for RVK3300); RVB3370 (for RVK3370); RVB3305 (for RVK3305); RVB3710 (for RVK3710); RVB3715 (for RVK3715); RVB3705 (for RVK3705); RVB3670 (for RVK3670); RVB3600 (for RVK3600); RVB3770 (for RVK3770); RVB3775 (for RVK3775). Not included: coupler head RVC3006 (sold separately). Trucks without the GM factory installed puck system.

About B&W Trailer Hitches

B&W.

Roger Baker and Joe Works founded B&W Trailer Hitches in 1987, working out of a garage where they built custom truck beds; the company name comes from their initials. Customers wanted a gooseneck ball that would not sit welded in the middle of the bed, and their answer was the Turnoverball: it mounts beneath the bed, and the ball flips over to stow in the same hole it tows from. The Companion fifth wheel hitch came next and uses the same under-bed mounting.

B&W still builds its hitches in Humboldt, Kansas, from American-made steel, and Joe Works began handing the company to its workers in 2007; today it is employee-owned. B&W counts itself among the few hitch makers still building in America.

Buying B&W from Prestige Truck. B&W honors its warranty whether or not you register the product, so there is no card to mail. Keep your Prestige Truck order email with your records in case you ever need to make a claim.

Frequently Asked Questions

Which hitch does RVB3700 belong to?

B&W kit RVK3700, the 20K Companion Fifth Wheel Hitch for 2016-2019 GM Pucks. That kit is exactly this base plus coupler head RVC3006, per B&W.

Which trucks does it fit?

B&W lists kit RVK3700 for the 2016-2019 Chevrolet Silverado 2500 HD; 2016-2019 Chevrolet Silverado 3500 HD; 2016-2019 GMC Sierra 2500 HD; 2016-2019 GMC Sierra 3500 HD with the GM factory installed puck system, and this base is the part that locks to those pucks.

Can I buy the base without the coupler?

Yes. B&W uses the same coupler head across the Companion line, so you can buy the base that suits your truck, fixed or slider, and keep or buy the head separately.

Do I need a lube plate?

No. B&W says the lube disc is up to you; automotive chassis grease on the top plate works too.

Why won't the jaws open when I pull the handle?

On uneven ground the king pin can bind slightly in the jaws, which B&W calls normal. With the handle open the jaw tension is released, and the jaws let go as you pull away.

How do I find my truck's towing rating?

B&W suggests your owner's manual first, then your truck dealer or the truck maker's website. Know it before you tow, and stay under the lower of your truck's and your hitch's ratings.

Specifications

BrandB&W Trailer Hitches
Part NumberRVB3700
ProductFifth wheel hitch base (base only)
Coupler headRVC3006 (sold separately)
FinishMedium gray powder coat
Made inHumboldt, Kansas, USA
Fits2016-2019 Chevrolet Silverado 2500 HD; 2016-2019 Chevrolet Silverado 3500 HD; 2016-2019 GMC Sierra 2500 HD; 2016-2019 GMC Sierra 3500 HD
ModelCompanion base (base only)
Complete kitRVK3700
Kit rating20,000 lb GTW, 5,000 lb pin weight (with RVC3006)
Base typeFixed
MountingFactory puck system (2016-2019 GM pucks)
Fit conditionGM factory installed puck system only
In boxThe base, with its pivot arms and leveling spring
WarrantyLimited Lifetime
UPC843233003789

Warranty, shipping & returns

  • Lifetime Limited warranty

    B&W Trailer Hitches covers this base with its Limited Lifetime Warranty. B&W's promise is simple: it stands behind what it builds, and when something goes wrong, it sets it right.
    • B&W builds its products to be free of design and quality defects. If you believe one falls short of that, B&W wants to make it right with you.
    • Accident or misuse: B&W says it will still help you get towing again at the lowest cost and with the least hassle it can.
    • Normal wear: the product and its finish age with use, and B&W does not promise to keep them in new condition.
    • Use it only as designed and keep up the light maintenance B&W calls for.
    • Registration is optional: B&W applies its warranty whether you register the product or not.
    • To start a claim, contact us with your order number and photos and we will take it up with B&W for you.

  • Free shipping

    Ships free to the lower 48 states, with no minimum order.
    • Order by 5 PM ET on a business day and it starts processing the same day.
    • Most orders arrive within 1-5 business days.
    • We email your tracking number as soon as it ships.

  • Inspect on delivery

    Before you install, check the base and its bolt bag against the base parts list on B&W's sheet for your kit, including both pivot arms. Check it as soon as it arrives.
    • Look for crushed ends, punctures or tears in the carton.
    • If something looks wrong, take photos of the box and the parts (and if a driver asks you to sign, note the damage on the receipt).
    • Open the box and check the parts against the parts list before you install.
    • Email support@prestigetruck.com right away with your order number, a short note and photos. We send a replacement or a full refund at no cost to you.

  • 30-day returns

    Return it within 30 days of delivery, unused, in the original packaging, with proof of purchase.
    • Email support@prestigetruck.com with your order number. We reply within 1-2 business days with instructions.
    • Damaged, defective or wrong item: we send a prepaid label or arrange a pickup.
    • Changed your mind: you pay return shipping. No restocking fee.
    • Refunds go back to your original payment method within 7 business days of approval. See our returns policy.

What our customers say

5 · 3 reviews

Jan Verified
07/11/2026

Thankful we figured that out.

We owned a pickup with a B&W hideaway ball and the Companion fifth wheel hitch that went with it. We traded that truck off and the new one had a puck system that wouldn't work with the B&W Companion we had. So we thought we were going to have to purchase a whole new fifth wheel hitch. But we found we could just buy the stand part and the top works perfectly with it. Saved us a lot of money.

Undisclosed Verified
05/26/2026

Very good value

Good product at a great price

djs334
10/20/2024

Regarding does not fit 2024 Ford Super Duty it does

I have a new 2024 F350 and thought there was a problem with the hitch. I called B & W and found out that it is a problem with the 2024. But there is a simple fix and all it it requires is a shim or 2 to make it work. They offered to send me the shims free of charge. They also told me that Ford has been notified of their problem.

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