WT3544 Jayco Fresh Water Tank – 42 Gallon Capacity, White, IAPMO Certified
Color: White
Capacity: 42 US Gallons (41–45 Gallon Group)
Dimensions: 60" L x 31" W x 5.75" H
The WT3544 is a durable fresh water tank designed for Jayco fifth wheels, travel trailers, and campers. Built with one-piece, roto-molded construction, it offers superior resistance to cracking and leaks—ideal for both replacements and capacity upgrades.
This tank features factory-positioned fittings engineered for specific Jayco applications, ensuring a precise fit with minimal installation effort.
Product Highlights:
- 42-gallon fresh water capacity
- Seamless roto-molded polyethylene body
- Spin-welded fittings for lasting reliability
- IAPMO certified for plumbing and sanitation compliance
- Engineered fitting layout compatible with Jayco RV models
A robust and reliable upgrade for your Jayco RV’s water storage system.
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

