NW Conversions 28 Gallon Spare Tire Water Tank (SP-ST-28)

The NW Conversions 28-Gallon Sprinter Spare Tire Water Tank is designed to replace the factory spare tire in Sprinter 2500 vans, turning unused underbody space into high-capacity fresh or grey water storage. Its direct-fit design uses factory mounting points, allowing a clean installation without additional hardware.

Built from BPA-free, food-grade polyethylene, this tank is IAPMO TS-4 certified, made in the USA, and engineered for durability in professional and DIY van conversions.

Features

• 28-gallon water capacity
• Direct-fit installation in factory spare tire location (Sprinter 2500)
• Compatible with Winnebago Revel and Storyteller builds
• Suitable for fresh or grey water systems
• Rotomolded BPA-free, food-grade polyethylene construction
• Uses factory hardware (no additional mounting hardware required)
• Multiple plumbing ports for flexible system design
• IAPMO TS-4 certified
• Made in the USA

Specifications

• Capacity: 28 gallons
• Dimensions: 28" W × 30" L × 10" H
• Dry weight: 22 lbs
• Material: BPA-free, food-grade polyethylene
• Plumbing connections:
  • 2 × 1½" NPT ports (driver side)
  • 1 × ½" NPT port (driver side)
  • 1 × 1½" NPT top port (for vent or float sensor)
  • 1 × ½" NPT top port
• Tank type: Non-pressurized (requires venting)

Compatibility & Installation

• Designed for Mercedes Sprinter 2500 (1997–present)
• Compatible with Winnebago Revel and Storyteller factory builds
• Sprinter 170 Extended and 3500 Dually may require bracket adjustments or spacers
• Can be installed with or without spare tire carrier depending on setup
• Ideal for van conversions requiring hidden, high-capacity water storage under the vehicle