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42 Gallon RV Holding Tank - Professional Grade Waste Storage Solution
Upgrade your RV's waste management system with this premium 42-gallon holding tank from Elkhart Plastics. Engineered to OEM specifications with seamless roto-molded construction, this tank delivers leak-proof reliability for years of worry-free camping adventures.
Why Choose This 42 Gallon RV Holding Tank?
When you're traveling in your RV, a reliable holding tank is essential for comfort and peace of mind. This Elkhart Plastics tank is built to the same exacting standards used by major RV manufacturers, featuring premium black polyethylene construction that resists cracking, UV damage, and temperature extremes. The seamless design eliminates weak points where leaks typically develop, ensuring dependable performance whether you're boondocking in the desert or camping in freezing conditions.
Key Features & Benefits
- 42 Gallon Capacity - Generous storage for extended trips without frequent dumping stops
- Center End Drain Design - Strategically positioned drain outlet ensures complete evacuation and easy access
- Seamless Roto-Molded Construction - Single-piece design with no seams or joints that can fail over time
- UV-Resistant Black Polyethylene - Superior material withstands harsh outdoor conditions and temperature fluctuations
- Compact 56" x 24.5" x 7" Dimensions - Space-efficient design maximizes capacity while fitting tight installations
- OEM Quality Manufacturing - Made by Elkhart Plastics, the trusted supplier to leading RV manufacturers
- Lightweight Yet Durable - Only 65 lbs for easier handling during installation
Technical Specifications
- Capacity: 42 Gallons
- Dimensions: 56" L x 24.5" W x 7" H
- Material: Black Polyethylene (UV-Resistant)
- Construction: Seamless Roto-Molded
- Drain Location: Center End Drain
- Drain Size: Standard 3" Outlet
- Weight: 65 lbs
- Part Numbers: EPI 4451, H1248, 5523
- Manufacturer: Elkhart Plastics/Ameri-Kart
- Country of Origin: USA
- HS Code: 392510
Compatible RV Models & Applications
This versatile 42-gallon holding tank is designed to fit a wide range of recreational vehicles, including:
- Travel trailers requiring reliable waste storage
- Motorhomes (Class A, B, and C models)
- Fifth wheel trailers with standard tank configurations
- Toy haulers needing durable holding tank solutions
- Custom RV builds and complete renovations
- Replacement for cracked, leaking, or damaged tanks
Important: Always verify dimensions (56 x 24.5 x 7) and drain placement (center end) match your specific RV configuration before ordering.
What Makes This Tank Superior?
Seamless Durability: Unlike welded or multi-piece tanks that can develop leaks at seams, our roto-molded construction creates a single, continuous piece with uniform wall thickness and no weak points. This manufacturing process ensures long-term reliability even under the stress of road vibration and temperature cycling.
Professional Grade Material: The black polyethylene construction provides superior UV protection compared to lighter-colored alternatives, maintaining structural integrity through years of exposure to sunlight, extreme heat, and freezing temperatures.
Optimized Drainage: The center end drain configuration ensures complete tank evacuation, reducing residual waste and odors. This design also simplifies installation in many RV floor plans where center access is more convenient than side or corner drains.
Installation & Compatibility
This tank features standard 3" drain fittings compatible with most RV waste systems. The center end drain design allows for flexible mounting options and easier access in many RV configurations. Professional installation is recommended to ensure proper venting, secure mounting, and correct plumbing connections for optimal performance.
Frequently Asked Questions
Can this tank be used for both black and gray water? Yes, this tank is suitable for either black water (toilet waste) or gray water (sink/shower drainage) applications depending on your RV's needs.
What's the difference between EPI 4451 and H1248? These are simply different part number designations for the same tank - EPI 4451 is the Elkhart Plastics number, while H1248 is the manufacturer's SKU. Both refer to this exact 42-gallon center end drain tank.
How do I know if this will fit my RV? Measure your existing tank or available installation space carefully. This tank measures 56" long x 24.5" wide x 7" high. Also verify that the center end drain location matches your RV's plumbing configuration.
Is this tank NSF certified? This is an OEM-grade tank manufactured to industry standards by Elkhart Plastics, a leading supplier to major RV manufacturers nationwide.
What's the warranty on this holding tank? As an OEM replacement part, this tank is built to the same specifications as original equipment. For specific warranty information, please use our AI Live Chat for assistance.
Where can I buy a 42 gallon RV holding tank? ElkhartRVParts.com is the authorized dealer for genuine Elkhart Plastics holding tanks with fast shipping and expert support.
How do I replace my RV holding tank? Professional installation is recommended. Ensure proper measurements, drain alignment, secure mounting, and correct venting for optimal performance.
Compare Similar Holding Tank Sizes
Looking for a different capacity? We offer a complete range of OEM holding tanks:
- 30 Gallon RV Holding Tank with Center End Drain - Compact option for smaller RVs or limited space installations
- 50 Gallon RV Holding Tank EPI 992H - Larger capacity for extended trips and bigger rigs
Essential Accessories & Replacement Parts
Complete your holding tank installation or upgrade with these compatible products:
- KIB Tank Level Sensor Monitor - Monitor your tank levels accurately with professional-grade sensors
- Browse Replacement Parts & Fittings - Find drain valves, vent caps, termination fittings, and more
- View All RV Holding Tanks - Explore our complete selection of black water, gray water, and waste tanks
Why Buy From ElkhartRVParts.com?
- ✓ Authorized dealer for genuine Elkhart Plastics products
- ✓ Fast shipping - most orders ship same or next business day
- ✓ Expert customer support with deep RV parts knowledge
- ✓ Competitive pricing on OEM quality components
- ✓ Secure packaging to prevent shipping damage
- ✓ In-stock inventory for immediate availability
Need Help Selecting the Right Tank?
Our AI Live Chat can help you identify the perfect holding tank for your specific RV make, model, and configuration based on your measurements and requirements. Get instant assistance with product selection, compatibility questions, and installation guidance.
Order Today - In Stock & Ready to Ship
This 42-gallon RV holding tank is in stock and ready to ship. Don't let a failing or leaking tank ruin your camping season - upgrade to reliable Elkhart Plastics OEM quality today and enjoy worry-free travels!
| Material | Black polyethylene |
|---|---|
| Width (inches) | 24.5 |
| Height (inches) | 7 |
| Length (inches) | 56 |
| Weight (pounds) | 38 |
| Capacity (gallons) | 42 |
| Wall thickness (inches) | 0.18 |
| Outlet diameter (inches) | 3 |
- What is the capacity of the rv holding tank? The RV holding tank has a capacity of 42 gallons.
- What are the dimensions of this holding tank? The tank measures 56 inches in length, 24 1/2 inches in width, and 7 inches in height.
- Is the tank pre-fitted with any outlets or fittings? No, the tank is blank with no fittings. Fittings can be added upon request via a quote.
- What material is the holding tank made from? The tank is made from black polyethylene with a wall thickness of 0.180 inches.
- What is the purpose of the sealed hole on top of the tank? The sealed hole on top is a venting hole used during the manufacturing process and has no functional use for the end-user.
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.