WASTE TANK 31 Gallon RV BLACK WATER gray holding trailer sewer WTCD-3161

Before You Purchase

Free Shipping (when offered) is for the 48 Contiguous U.S. only
Check Ship-to Address is correct & complete - Lot # / Apartment # / Suite #

Multiple Tracking Numbers eBay will only upload one tracking number per order. If you need the other tracking numbers send a message do not open a case as it is not necessary.

Item Details

Class A Customs RV Black Water Holding Tank Used for Human Waste or Gray Water - DO NOT use for fresh or drinking water

Made With Recycled Medium Density Polyethylene (MDPE) Resin

Seamless One piece construction, no seams to burst
Resistant Stain, Corrosion and Rust Resistant

OEM Part No retail box - no install instructions Have a certified technician install all parts to prevent product damage and personal injury

Tanks are made in a warehouse - shavings from manufacturing process will be inside of tank, light scratching, scuffs, dust, and outlet glue will be present on tank - this does not affect performance or durability of tank.

Installed Outlet
3” ABS Female Pipe - outlet can not be moved
Do Not over-tighten fittings damage will occur
Dump valve does not hook directly to the 3" ABS fitting, from the outlet run PVC or ABS piping to the outside of the trailer, a dump valve is added to the piping. Dump valve and piping NOT included.

Inlet & Vent Installation
Class A Customs RV Black Water Tanks only come with the outlet, the top of the tank is solid with no holes in it. End user will determine where the inlet and vent will need to be placed and install. Inlet and vent parts NOT included.


Mounting & Bracing Tank needs to be adequately supported and braced to prevent movement during transit
Do Not hang tank by ratchet straps, this is too thin and will not adequately support tank.
Do Not place weight on tank, if you need to stack the tanks you will need a weight bearing shelf between them.

Tank Measurements (+/- .25" on each measurement)
VIEW CAD DRAWING
Average thickness 7/32" +/-

OEM Parts

Have a certified technician install all parts to prevent product damage and personal injury. No retail box, no installation instructions. Please research before purchasing this item, online videos and installation help can be found by searching classAcustoms blog

Payment & Shipping Information

Free Shipping (when offered) is for the 48 Contiguous U.S. only
Check Ship-to Address is correct & complete - Lot # / Apartment # / Suite #

Larger Items that don't fit in mailbox carrier may decide not to leave, you will need to arrange delivery with the carrier.

Multiple Tracking Numbers eBay will only upload one tracking number per order. If you need the other tracking numbers send a message do not open a case as it is not necessary.

Manufacturer Warranty

Warranty does not cover install by customer or non-certified technician. No warranty, guarantee or liability is stated or implied on any product beyond the manufacturer. Class A Customs is not responsible for any damages caused from the use of this or any product we carry. Please research before purchasing this item, online videos and installation help can be found by searching classAcustoms blog

FAQ's and Item Help

Question: I need a custom tank can you make it?
Answer: We can manufacture custom tanks, however you would need to purchase a mold which ranges from $6,500 and up.

Question: I need a ____ Water Tank, do you have other sizes?
Answer: Yes, we manufacture several sizes of fresh and gray tanks as well as black/waste water tanks check our store for all sizes.