WT3855 – 26-Gallon Fresh Water Tank for RV, Trailer, or Camper
Upgrade or replace your RV’s water storage with the WT3855 Fresh Water Tank, engineered for durability and a perfect fit in select Forest River applications. Built from impact-resistant, roto-molded polyethylene, this tank is a rugged and reliable solution for Fifth Wheels, travel trailers, and campers.
Key Features:
-
💧 26-Gallon Fresh Water Capacity
Ideal for extended trips—boost your onboard water supply or replace a failing tank. -
🛠️ One-Piece Roto-Molded Construction
Seamless design prevents leaks and resists cracking from road vibration or temperature changes. -
⚙️ Pre-Fitted for Forest River Models
Specific fittings match OEM configurations—Part #3847 from Forest River. -
✅ IAPMO-Certified
Built to meet industry safety and quality standards.
Specifications:
- Dimensions: 50 3/4" x 22 3/4" x 5 3/4"
- Capacity: 26 gallons
- Material: White polyethylene
- Construction: One-piece, roto-molded with spin-welded fittings
- Compatibility: Certain Forest River RVs (Part #3847)
Width: 62.79" (1595mm)
Crossbar Length: 62.40" (1585mm)
130 HR Transit: 104.72" (266.0cm)
148 MR Transit: 132.3" (336.0cm)
148 HR Transit: 81.9" (308.0cm)
148 HR EXT Transit: 150.4" (382.0cm)
Lengths by Vehicle:
Internal Width: 62.22" (1555mm)
130 Transit: 49 lbs
148 Transit: 58 lbs
148 EXT Transit: 74 lbs

