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Premium 31 Gallon RV Black Water Holding Tank - Built to Last
This 31 gallon RV holding tank (34" x 19.5" x 13") is engineered for superior durability and long-term performance in your RV waste management system. Featuring industry-leading wall thickness and professional-grade construction, this tank outperforms standard competitors' tanks.
Why Choose This RV Holding Tank?
Superior Wall Thickness: While competitors' tanks have wall thickness ranging from .125" to .150", our tanks feature .1875" to .20" walls - up to 60% thicker for maximum durability and leak prevention. We build our tanks to last!
Professional Roto-Molded Construction: Manufactured using advanced rotational molding in durable black polyethylene for consistent wall thickness, superior strength, and resistance to cracking or warping.
Versatile Waste Storage: Designed for both black water (solids and wastewater) and gray water applications, giving you flexibility in your RV plumbing configuration.
Ready for Installation: Includes 3" drain outlet hub and probes. Available as blank tank (no fittings) with custom fittings available per quote to match your exact RV specifications.
Technical Specifications
- Capacity: 31 Gallons
- Dimensions: 34" L x 19.5" W x 13" H
- Wall Thickness: .1875" to .20" (significantly thicker than industry standard)
- Material: Roto-molded black polyethylene
- Drain Outlet: 3" hub included
- Probes: Included for level monitoring
- Configuration: Blank tank (fittings available separately)
- Part Numbers: 4848, 4848H, H1017, ERV121000, T4848, T4848H31
- Weight: 64 lbs
Perfect For These RV Applications
This 31 gallon holding tank is ideal for travel trailers, fifth wheels, motorhomes, and campers requiring a compact yet robust waste storage solution. The 34" x 19.5" x 13" footprint fits standard RV underbelly compartments while maximizing capacity.
What Makes Elkhart Plastics Tanks Different?
Elkhart Plastics (EPI) has been the trusted name in RV holding tanks for decades. Our tanks feature:
- Thicker walls than competitors for superior strength and longevity
- Consistent quality through precision roto-molding process
- UV-resistant black polyethylene that won't degrade in sunlight
- Seamless one-piece construction eliminates weak points and potential leaks
- Made in USA with rigorous quality control standards
Installation & Customization
This blank tank allows you to add fittings exactly where you need them for your specific RV layout. Need custom fittings? Contact us for a quote - we can add inlet fittings, vent fittings, and drain configurations to match your exact requirements.
Frequently Asked Questions
Q: Will this tank fit my RV?
A: Measure your available space carefully. This tank is 34" x 19.5" x 13". If your space matches or exceeds these dimensions, it will fit. Need help? Our AI Live Chat can assist with fitment questions.
Q: What's the difference between black water and gray water tanks?
A: This tank works for both! Black water tanks store toilet waste, while gray water tanks store sink/shower drainage. The tank construction is identical - only the plumbing connections differ.
Q: How do I add fittings to this blank tank?
A: You can drill and install threaded fittings yourself, or contact us for professional fitting installation. We offer custom fitting placement per quote.
Q: Is this tank better than cheaper alternatives?
A: Absolutely. Our .1875"-.20" wall thickness vs competitors' .125"-.150" means 60% more material for superior strength, crack resistance, and longevity. You'll replace cheap tanks multiple times before this one fails.
Q: What part number do I need?
A: This tank has multiple part numbers: 4848, 4848H, H1017, ERV121000, T4848, T4848H31. They all refer to this same 31 gallon tank.
Why Buy From ElkhartRVParts.com?
- ✓ Authorized dealer of genuine Elkhart Plastics (EPI) products
- ✓ 100% authentic OEM-grade parts - no knockoffs
- ✓ Expert support via AI Live Chat for product questions and fitment help
- ✓ Fast shipping to get your RV back on the road quickly
- ✓ Competitive pricing on premium quality tanks
Ready to upgrade your RV's waste system with a tank that's built to last? Add this premium 31 gallon holding tank to your cart today. For questions about fitment, custom fittings, or installation, use our AI Live Chat for instant expert assistance.
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| Material | Black polyethylene |
|---|---|
| Width (inches) | 19.5 |
| Height (inches) | 13 |
| Length (inches) | 34 |
| Capacity (gallons) | 31 |
| Wall thickness (inches) | 0.1875 to 0.20 |
| Outlet diameter (inches) | 3 |
- What is the capacity of the rv holding tank? The RV holding tank has a capacity of 31 gallons.
- What are the dimensions of this holding tank? The dimensions of the tank are 34 inches in length, 19 1/2 inches in width, and 13 inches in height.
- Does the tank come with fittings included? No, the tank is blank with no fittings included. Fittings can be added based on a quote.
- What material is the holding tank made of? The tank is roto-molded from durable black polyethylene.
- What size is the outlet on the holding tank? The holding tank features a 3-inch outlet hub.
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.