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Serg Supply Promaster Van Bench Bed System

Original price $3,989.99 - Original price $5,591.82
Original price
$3,989.99 - $5,591.82
Current price $3,992.03
Length: 54"
Material: Prefinished Maple

Innovative Bench Bed System 

A dynamic solution for crafted to supplant traditional tall wheel well boxes for your van conversion. This set comprises two meticulously engineered benches, specifically tailored to accommodate your water and electrical systems, boasting a generous capacity of up to 10kWh of power and 20 gallons of water while leaving ample room for other essentials. The thoughtfully designed rear access doors facilitate seamless outdoor access to water and power utilities, enhancing convenience and accessibility. Crafted from lightweight yet durable materials, this bench system serves as a versatile storage solution and doubles as functional seating, blending practicality with comfort. Experience functionality and efficiency with Serg Supply's Bench Bed System.

Still looking for more storage space? Check out our Overhead Cabinets!


  • Quality Craftsmanship: Our bench system is handcrafted with premium materials, ensuring durability and longevity, making it a lasting investment for your van life journey.
  • Easy Operation: Designed with DIY enthusiasts in mind, our bed system comes with straightforward installation instructions, making setup hassle-free. Converting from bed to bench is as easy as removing panels or putting them back on. We provide hook and loop pads to secure bed to bench for easy removal and a secure hold on the road. 
  • Comfort First: Experience the comfort of an ergonomic sitting arrangement standardized for ideal height and depth in your vehicle. Different sized benches offer a variety of sleep lengths when converted to a bed. 
  • Efficient Storage: The bed system sits atop two mirror wheel well benches, which provide ample space for your essentials, ensuring efficient storage within your van. This will fit the Ecoflow Independance 5kwh system (in vehicles that have more than 26" of space behind the wheel well). 
  • Accessibility: You can access the storage from both inside the vehicle and from the rear doors, ensuring convenient reach for your belongings. Each lid is on soft-close hinges for easy access.
  • Designed for Water Tanks and Electrical Systems: Our wheel well storage system is built to accommodate various water tank and electrical systems, with features like a water level sight notch, making it a perfect match for water tanks under 17.5" tall.
  • Versatile Installation: Whether you prefer a slip-over design for pre-mounted water tanks or internal mounting, our system can adapt to your needs.
  • Soft-Close Hinges and Adjustable Latches: Enjoy the convenience of soft-close hinges with adjustable latches, ensuring that your belongings stay secure even while you're on the move.
  • Ready for Installation: We've got your back with a product that arrives preassembled and ready for quick installation, saving you time and effort.


  • Prefinished Maple
  • Prefinished Amber Bamboo
  • Stealth (All Black Hex)
  • Stealth + Maple (Black Hex Cabinet + Maple Doors + Black Hex Bed Panels)
  • Stealth + Bamboo (Black Hex Cabinet + Bamboo Doors + Black Hex Bed Panels)

Please refer to our materials page here to see images and details of each option: Materials


Outside Dimensions: 54"-72" Width x 18.75" Height x 21" Depth
Interior Space: 51.75" x 69.75" Width x  17.5" Height x 19.5" Depth
Note: There is a center partition cut out around the wheel well that is perfectly centered and takes 3/4" of space. 

Note: 72" Bed system gets (3) Bed Panels, all other sizes are manufactured with (2) bed panels. 


Vehicle Compatibility: The different widths are specifically optimized for different vehicles.

54": Fits Sprinter 144", Promaster 136", and Transit 148"
60": Fits Sprinter 144", Fits Sprinter 170", Promaster 159", Transit 148".
66": Fits Sprinter 170"/170"EXT, Promaster 159"/159"EXT,  Transit 148"/148"EL
Fits Sprinter 170"/170"EXT, Promaster, 159"EXT,  Transit 148"EL

Power Compatibility: 

This unit will fit the following systems:

  • All sizes accommodate up to 10kwh Ecoflow Independance System
  • All sizes accommodate EcoFlow Delta Pro and Delta Max
  • All sizes accommodate Bluetti AC200L
  • All sizes accommodate Yeti 1000X, 1500X, 3000X, and 6000X with minor modification to floor stretcher.

Water Compatibility:

This unit will fit the following water tanks:

  • RinseKit Cube + Heater kits
  • Up to 16.5" Tall x 18.5" Deep. Width depends on vehicle and may require modification to center partition for tank to pass over wheel well. 

DIY Installation

Installation Difficulty: Easy | 2 people
Installation Time: 1 Hour
Tools Needed: Power Drill, Rivet Nut Tool, Screw Driver, Drill Bits


    • What goes inside the wheel well benches?

    The wheel well benches are designed to house water tanks, plumbing, and electrical. Easy access hinged doors allow you to get in and out for smooth installation and maintenance. Electrical equipment may be mounted inside the wheel well box or the wheel well panels behind the box. We recommend cutting ventilation for electrical equipment, heaters, or pumps.

    • How do I apply paint, stain, or sealer?


    • Lightly scuff the entire cabinet surface that you plan on coating with 120-180 grit sandpaper.
    • Apply 2-3 coats of primer before applying your main coat.
    • Always apply a finish when you're happy with the paint for a long-lasting appearance.


    • Sand the surface on all faces with sandpaper traveling with the grain of the wood.
    • Apply stain cautiously to a section of the cabinet that will not be visible to gauge the volume and pressure needed to achieve the desired look.
    • Apply the stain evenly with a rag, sponge, or spray gun until all surfaces are coated.
    • Please note that overlapping surfaces may make the stain darker on the overlapped areas.
    • Always apply a finish when you're happy with the stain for a long-lasting appearance.