---
product_id: 175060711
title: "Class A Customs 48 Gallon RV Waste Black Water Holding Tank 56 x 30 x 9 WT-4800"
brand: "classacustoms"
price: "$U32792"
currency: UYU
in_stock: true
reviews_count: 5
category: "Class Acustoms"
url: https://www.desertcart.uy/products/175060711-class-a-customs-48-gallon-rv-waste-black-water-holding
store_origin: UY
region: Uruguay
---

# 3” ABS Female Outlet - Secure fit 48 Gallon Capacity - Extended use Made in USA - Quality assured Class A Customs 48 Gallon RV Waste Black Water Holding Tank 56 x 30 x 9 WT-4800

**Brand:** classacustoms
**Price:** $U32792
**Availability:** ✅ In Stock

## Summary

> 🚐 Upgrade your RV’s backbone with the ultimate 48-gallon black water tank—because freedom means fewer stops!

## Quick Answers

- **What is this?** Class A Customs 48 Gallon RV Waste Black Water Holding Tank 56 x 30 x 9 WT-4800 by classacustoms
- **How much does it cost?** $U32792 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/175060711-class-a-customs-48-gallon-rv-waste-black-water-holding)

## Best For

- classacustoms enthusiasts

## Why This Product

- Trusted classacustoms brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Go Longer, Worry Less:** 48 gallons of seamless, durable MDPE storage means fewer dumps and more freedom on the road.
- • **Precision Outlet Design:** 3” ABS female pipe outlet ensures a reliable, leak-resistant connection—just add your piping and dump valve.
- • **Customizable Vent & Inlet:** Design your own venting system to optimize airflow and prevent pressure build-up—flexibility meets function.
- • **Built Tough, Made in the USA:** Crafted with premium Medium Density Polyethylene resin for unmatched durability and peace of mind.
- • **Secure & Stable Installation:** Engineered for easy mounting with extra support options to keep your tank safe during every adventure.

## Overview

The Class A Customs 48 Gallon RV Waste Black Water Holding Tank is a robust, seamless, one-piece tank made in the USA from high-quality Medium Density Polyethylene resin. Designed exclusively for waste and gray water, it features a fixed 3” ABS female outlet and requires user-installed vent and inlet fittings. Measuring 56 x 30 x 9 inches, this tank offers extended capacity for longer trips, ensuring reliable, durable performance for RVs, campers, trailers, and tiny houses.

## Description

RV Waste Water Holding Tank MADE IN THE USA by Class A Customs using Medium Density Polyethylene (MDPE) Resin TANK NOT FOR FRESH OR DRINKING WATER USE – WASTE/GRAY WATER USE ONLY -SEAMLESS One-piece construction, no seams to burst COLOR Black OEM PART No retail box - no install instructions Have a certified technician install all parts to prevent product damage and personal injury PREPARATION Tanks are made in a warehouse clean each tank prior to use to remove any debris, scuffs or marking from the manufacturing process INSTALLED OUTLET 3” ABS Female Pipe - outlet can not be moved DO NOT over-tighten fittings damage will occur Dump valves do not hook directly to the 3" ABS fitting, from the outlet run PVC or ABS piping, dump valve is added to the piping. INLET & VENT INSTALLATION Class A Customs Black Water Tanks only come with the outlet the end user will determine where the inlet and vent will need to be placed and install, hardware NOT included. TANK MUST BE VENTED allowing air in and out when in use. *DO NOT PRESSURIZE TANK* DO NOT over-tighten fittings damage will occur. MOUNTING & BRACING be sure to secure tank to prevent movement and be sure to secure due to weight when loaded DO NOT place weight on tank.

Review: Now able to go 10+ days without draining. - Great Upgrade from 30 gallon tank. Some customizing to install. Used banding iron straps for extra support, ends and middle. Also installed two sprayer, fill end and drain end pointing at sensors. Very pleased with Quality. Great Price.
Review: Muy bueno para mi rv buena calidad

## Features

- 48 Gallon RV Waste Water Holding Tank MADE IN THE USA by Class A Customs using Medium Density Polyethylene (MDPE) Resin TANK NOT FOR FRESH OR DRINKING WATER USE – WASTE/GRAY WATER USE ONLY – Used in RV’s Campers, Trailers, Motorhomes and Tiny Houses
- INSTALLED OUTLET 3” ABS Female Pipe - outlet can not be moved DO NOT over-tighten fittings damage will occur Dump valves do not hook directly to the 3" ABS fitting, from the outlet run PVC or ABS piping (not included), dump valve (not included) is added to the piping.
- INLET & VENT INSTALLATION Class A Customs Black Water Tanks only come with the outlet the end user will determine where the inlet and vent will need to be placed and install, hardware NOT included. TANK MUST BE VENTED allowing air in and out when in use. *DO NOT PRESSURIZE TANK* DO NOT over-tighten fittings damage will occur.
- NOT INCLUDED Inlet and Vent Fittings / Additional Fittings / Hardware / Mounting Hardware / Dump Valve / Piping NOT INCLUDED

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07RLTG22R |
| Best Sellers Rank | #1,015,377 in Automotive ( See Top 100 in Automotive ) #101 in RV Black Water Tanks |
| Brand | classAcustoms |
| Capacity | 48 Gallons |
| Color | Black |
| Customer Reviews | 4.2 4.2 out of 5 stars (46) |
| Date First Available | May 7, 2019 |
| Manufacturer | Class A Customs |
| Manufacturer Part Number | WT-4800 |
| Material | Polyethylene (PE), Polyvinyl Chloride (PVC), Resin |
| Model | WT-4800 |
| Product Dimensions | 56 x 30 x 9 inches |
| Shape | Rectangular |

## Product Details

- **Brand:** classAcustoms
- **Capacity:** 48 Gallons
- **Color:** Black
- **Material:** Polyethylene (PE), Polyvinyl Chloride (PVC), Resin
- **Shape:** Rectangular

## Images

![Class A Customs 48 Gallon RV Waste Black Water Holding Tank 56 x 30 x 9 WT-4800 - Image 1](https://m.media-amazon.com/images/I/71pTHSi0DAL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Now able to go 10+ days without draining.
*by E***A on November 17, 2025*

Great Upgrade from 30 gallon tank. Some customizing to install. Used banding iron straps for extra support, ends and middle. Also installed two sprayer, fill end and drain end pointing at sensors. Very pleased with Quality. Great Price.

### ⭐⭐⭐⭐⭐ Review
*by H***A on September 29, 2020*

Muy bueno para mi rv buena calidad

### ⭐ Buyer beware
*by S***N on June 12, 2025*

Tank wouldn’t work and the company wants you to pay to ship it back to them. Terrible customer service.

## Frequently Bought Together

- Class A Customs 48 Gallon RV Waste Black Water Holding Tank 56 x 30 x 9 WT-4800
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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-02-23*