Mercedes Sprinter 22 Gallon Undercarriage Water Tank
Add significant water capacity to your Sprinter without losing valuable interior space. This 22 Gallon Sprinter Undercarriage Water Tank is purpose-built to mount on the driver side next to the fuel tank on 2007+ Mercedes Sprinter vans. Use it for fresh or grey water—its durable, food-grade construction is designed for real vanlife conditions.
Key Features
Perfect Fit for 2007+ Mercedes Sprinter
Engineered specifically for the undercarriage, this tank mounts securely beside the fuel tank for optimal weight balance and excellent ground clearance.
22-Gallon Capacity
A substantial water supply for off-grid living—ideal for sinks, showers, dishwashing, and extended stays.
Fresh or Grey Water Compatible
Safe for potable water and strong enough for grey water applications.
Food-Grade, BPA-Free Material
Made from BPA-free, food-grade plastic and IAPMO TS-4 Certified for safety and reliability.
Non-Pressurized Venting Design
Tank must be vented during installation—perfect for gravity-fed or pump-fed systems.
Specifications
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Capacity: 22 gallons
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Overall Dimensions: 46" L × 9.5" H × 12.5" W
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Material: BPA-free, food-grade plastic
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Certification: IAPMO TS-4 Certified
Ports (Rear-Facing End)
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(2) × 1.5" NPT ports
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(2) × 1/2" NPT ports
Top Port
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(1) × 1.5" NPT port
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Located 8.5" from the tank end, centered
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Installation Details
Everything required for mounting is included:
Included Hardware
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(3) Stainless steel laser-cut mounting straps
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Stainless steel 3/8" mounting hardware
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(3) × 3/8" rivnuts
Mounting Requirements
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Uses three factory fuel tank strap mounting points
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Requires drilling three 17/32" holes for rivnuts along the pinch weld
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A rivnut tool is required (not included)
Once installed, the tank fits securely under the van with minimal impact on clearance.
Made in the USA
Built with high standards for durability and longevity—designed to handle real-world road conditions and long-term vanlife use.
Upgrade your water system with the 22 Gallon Undercarriage Water Tank and enjoy more off-grid capability while keeping your Sprinter interior open and functional. Perfect for camper conversions, adventure rigs, and commercial van builds.
