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Curious Campervans Sprinter Undermount Water Tank – 10.43 Gallons

Optimize your van’s water system without sacrificing interior storage with the Curious Campervans 10.43 Gallon Sprinter Undermount Water Tank. Designed to mount neatly beneath the chassis of Mercedes-Benz Sprinter vans, this low-profile tank creates additional freshwater or grey water capacity while preserving valuable interior living space.

Manufactured from food-grade, BPA-free linear low-density polyethylene, this tank meets US and Canadian standards for potable water applications and delivers a durable solution built for extended travel and off-grid adventures.

Features

• Custom fit for Mercedes-Benz Sprinter vans (all wheelbases)
• Low-profile design helps preserve ground clearance
• Suitable for fresh water or grey water applications
• Can also be installed inside most van conversions
• Food-grade and BPA-free construction
• Durable polyethylene designed for outdoor use
• Compatible with KUS S5U Water Level Sender
• Optional fittings and mounting kits available
• Compatible with larger wheel well tank systems for expanded capacity

Specifications

• Capacity: 10.43 US gal / 39.4 L
• Dimensions (L × W × H): 36" × 9.5" × 8"
• Material: Linear low-density polyethylene (LLDPE)
• Certification: Food-grade / BPA-free
• Installation Position: Driver side or passenger side
• Thread Type: Female NPT

Ports & Connections

• 1 × 1½" drill-out membrane port (top)
• 2 × 1¼" drill-out membrane ports (top & end)
• 1 × ¾" end port
• 2 × ½" end ports
• Membrane ports only require drilling when used

Available Add-On Kits

• Grey Water Fittings Kit
• Fresh Water Fittings Kit
• Stainless-Steel Strapping Kit
• Water Level Sender & Gauge Kit

Fresh Water Fittings Kit Includes

• 1 × 1¼" PVC 90°
• 2 × ¾" PVC 90°
• 1 × ¾" PVC ball valve
• 3 × PVC nipples (6", 4", 1½")
• 1 × ½" poly adaptor
• 2 × ½" poly elbows
• Fill port
• Hose clamps
• Teflon tape
• 5 ft fill hose
• 5 ft ⅝" ID vinyl hose

Grey Water Fittings Kit Includes

• 1 × 1¼" PVC 90°
• 2 × ¾" PVC 90°
• 1 × ¾" PVC ball valve
• 3 × PVC nipples (6", 4", 1½")
• Poly adaptors and elbow
• Plug and hose clamps
• Teflon tape
• 5 ft fill hose
• 2 ft ⅝" ID vinyl hose

Stainless-Steel Strapping Kit Includes

• Heavy-duty stainless-steel mounting straps
• Designed for passenger-side installation on 170" wheelbase Sprinter vans

Compatibility

• Compatible with Mercedes-Benz Sprinter vans (all wheelbases)
• Compatible with fresh water and grey water applications
• Can be installed as an interior water tank for most vans
• Compatible with 29-Gallon and 32-Gallon Wheel Well Water Tanks
• Compatible with KUS Water Level Sensors and Gauges
• T1N compatibility not officially verified — compare vehicle measurements before installation