NW Conversions 28 Gallon Promaster Wheel Well Water Tank – Right (Passenger Side Offset)

28 Gallon Ram Promaster Passenger Side Wheel Well Fresh Water Tank

Maximize your van build layout with the NW Conversions 28 Gallon Passenger Side Wheel Well Water Tank, precision-designed to contour perfectly over the Ram Promaster right-side (passenger side) wheel well. Unlike universal or centered tanks, this offset design hugs the passenger wheel housing, freeing up valuable floor space for beds, galleys, cabinetry, and storage systems.

Built specifically for professional van conversions, this 28-gallon fresh water tank keeps weight low and stable while providing ample water capacity for off-grid travel, camper van builds, and overland setups.

While optimized for the Promaster, this tank is also compatible with Mercedes Sprinter and Ford Transit passenger-side wheel well applications (minor top gap may occur due to wheel well size differences).

Why Choose a Passenger Side Offset Wheel Well Tank?

Universal water tanks often waste space and require unnecessary fabrication. This right-side offset water tank is engineered to:

• Maintain a low center of gravity

• Maximize usable interior living space

• Improve weight distribution in passenger-side galley layouts

• Simplify plumbing installation

• Reduce custom framing requirements

Ideal for DIY builders and professional van upfitters alike.

Key Features

Passenger Side (Right Offset) Design

• Specifically molded for the Ram Promaster passenger-side wheel well

• Maximizes floor space for beds, cabinets, and storage

• Ideal for passenger-side kitchen and galley layouts

Low Center of Gravity

• Sits tight to the wheel housing

• Keeps 28 gallons of water weight low and stable

• Helps improve overall driving balance

BPA-Free Food Grade Construction

• Safe for drinking water storage

• Rotomolded polyethylene for superior durability

• Impact-resistant and long-lasting

• Made in the USA

Flexible Plumbing Configuration

Customize your plumbing system with multiple molded port options:

• (2) 1/2" NPT ports – Open and ready to use

• (2) 1.5" NPT end ports – Spun closed (must be drilled if used)

• (1) 1.5" NPT top port – Spun closed (ideal for gravity fill or water level sensor; requires drilling if used)

Important: Tank must be properly vented and is designed for gravity fill systems only. Do not pressurize.

Vehicle Compatibility

Ram Promaster

• Designed specifically for Passenger Side / Right Wheel Well

• Direct contour fit

Mercedes Sprinter (Passenger Side)

• Compatible passenger-side installation

• Minor top gap may occur due to wheel well size differences

Ford Transit (Passenger Side)

• Compatible passenger-side installation

• Minor top gap possible

Custom Builds

• Box trucks

• Trailers

• Tiny homes

• Off-grid applications requiring right-side wheel well configuration

Technical Specifications

• Capacity: 28 Gallons

• Dimensions: 48" L x 14" W x 20" H

• Weight: 32 lbs

• Orientation: Right Side / Passenger Side Offset

• Material: BPA-Free Food Grade Polyethylene

• Manufacturing: Rotomolded in the USA

• System Type: Gravity Fill / Vented (Do Not Pressurize)

Frequently Asked Questions

Is this tank pressurizable?

No. This is a gravity-fill, vented fresh water tank and should not be pressurized.

Are fittings included?

The tank includes molded NPT ports. Fittings must be purchased separately based on your plumbing design.

Will this fit my Sprinter or Transit?

Yes, it fits the passenger-side wheel well. A slight top gap may be present due to wheel well size differences compared to the Promaster.

Is this safe for drinking water?

Yes. It is made from BPA-free, food-grade polyethylene suitable for potable water storage.

Optimize Your Promaster Water System

The NW Conversions 28 Gallon Passenger Side Wheel Well Water Tank is the space-saving solution for professional van conversions and DIY builds. Designed to maximize layout efficiency while maintaining proper weight distribution, this USA-made tank is built for long-term durability and clean plumbing integration.