Single Universal Wheel Well Box – Camper Van Storage for Sprinter, Transit, and Promaster

Maximize your van’s storage and utility with the Single Universal Wheel Well Box – a durable, versatile, and space-saving solution designed for Sprinter, Transit, and Promaster conversions. Perfect for housing water tanks, electrical systems, or extra gear, this wheel well cabinet is the ultimate upgrade for van lifers, DIY builders, and professional van conversion shops.

Designed for Functionality

The Single Wheel Well Box eliminates wasted space around your van’s wheel wells, turning it into secure storage or system housing for power and water. With options for different lengths and finishes, this cabinet adapts to your unique build—whether you’re powering your setup with EcoFlow, Victron, or Renogy, or running a 20-gallon water system.

Key Features

• Optimized Storage: Perfect for water tanks, plumbing, batteries, or essential gear.

• Accessible Design: Doors open from both the inside of your van and rear cargo doors.

• Power System Ready: Compatible with EcoFlow (up to 5kWh), Bluetti, Yeti, Victron, and Renogy setups.

• Water System Ready: Fits the Northwest Conversions 20-gallon tank with water level sight notch.

• Custom Fit Options: Choose driver or passenger side, plus multiple lengths (54", 60", 66", 72").

• Durable Hardware: Features soft-close hinges, adjustable latches, and gas-piston lift assists.

• Premium Finish Options: Available in Prefinished Maple, Stealth (Black Hex-Ply), or Stealth + Bamboo (Stealth with Bamboo Doors).

• Heavy-Duty Construction: Built in the USA to withstand daily van life use and off-road conditions.

Specifications

• Outside Dimensions: 54"–72" W x 33" H x 21" D (extended depth allows fitment on dually models + more tank options)

• Vehicle Fitment by Width:

  • 54": Sprinter 144", Promaster 136", Transit 148"

  • 60": Sprinter 144"/170, Promaster 159, Transit 148"

  • 66": Sprinter 170/170EXT, Promaster 159/159EXT, Transit 148/148EL

  • 72": Sprinter 170/170EXT, Promaster 159EXT, Transit 148EL

• Hardware: Stainless steel standard (black oxide available on request with quote)

Power System Fitment Notes

• EcoFlow: Sprinter 170 has ample room; Sprinter 144 requires 60" box, no GoCode trim kit, and ≥1.5" floor height.

• Victron / Renogy: Leave order notes for inverter setups so we can modify supports.

• Portable Power Systems: Compatible with Delta, Bluetti, Yeti, and others.

Installation

• Difficulty: Easy | 2 people

• Time: ~1 hour

• Tools Needed: Power drill, rivet nut tool, screwdriver, drill bits

• Mounting: Secures to van wall and subfloor (rivet nuts recommended, self-tapping screws acceptable).

Additional Notes

• GoCode Fitment: Rear GoCode kit reduces clearance by ~3.5"; Sprinter 144 with full GoCode cannot fit a 60" box.

• Wood Variation: Lumber grain, shade, and tint vary naturally; small veneer imperfections may occur.

• Painting Instructions: Sand (120–180 grit) → Apply 2–3 coats primer → Paint → Seal for durability.

Order Changes & Refund Policy

Once an order is placed, all changes (appliances, width, add-ons, material) must be finalized immediately. Any changes made after this time will incur a 30% restocking fee. This ensures order accuracy and reduces inconsistencies. Contact us immediately before production/shipping if you need to make updates.

Custom orders cannot be refunded once in production. Refunds cannot be issued after this point.

✅ The Single Universal Wheel Well Box is the go-to solution for van lifers looking to add water, power, or secure storage without sacrificing interior layout. Perfectly designed for Sprinter, Transit, and Promaster builds, this wheel well enclosure is strong, versatile, and built to last.