A flexible undercarriage tank that fits passenger or driver side — and works with factory Transit Trail running boards.
The TR-UC-16 is designed to slot under the Ford Transit’s undercarriage with three laser-cut stainless steel mounting straps and all required hardware included. It fits on the passenger side under the slider door, or on the driver side next to the fuel tank — giving you placement flexibility depending on your build layout. Suitable for fresh or grey water.
Built from food-grade, BPA-free polyethylene and certified to IAPMO TS-4 / RVIA standards. Made in the USA by NW Conversions.
Fits Transit Trail with factory running boards.
Fits:
Now confirmed: all Transit wheelbases
∙ Ford Transit 130", 148″, & 148″ EXT (2014–present)
∙ Mounts on passenger side (under slider) or driver side (next to fuel tank)
Specs:
Weight: 14 lbs
| Capacity | 16 gallons |
| Dimensions | 48″ L × 13″ W × 8.5″ H |
| Material | BPA-free, food-grade polyethylene |
| Certifications | IAPMO TS-4 / TEI Listed / RVIA Approved |
| Made in | USA |
| System type | Non-pressurised — must be vented |
| Hardware included | (3) stainless steel laser-cut mounting straps, 3/8″ hardware, 3/8″ rivnuts. Rivnut tool required — not included. |
| Running board compatibility | Fits Transit Trail with factory running boards. Also compatible with Owl running boards. May require minor bracket modification with other aftermarket boards. |
Ports (rear-facing):
∙ (1) 1.5″ NPT + (2) 1/2″ NPT on rear-facing end
What’s Included: Tank, (3) stainless steel laser-cut mounting straps, stainless hardware, rivnuts. Rivnut tool required — not included.
Tank Compatibility:
