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45 Gallon RV Black Water Holding Tank - Premium Elkhart Plastics Quality
The Elkhart Plastics 45-gallon RV holding tank (EPI 4793 / H1240002) delivers professional-grade waste water storage for motorhomes, travel trailers, and fifth wheels. Measuring 56" x 27" x 9", this seamless roto-molded tank provides reliable black water or grey water containment with the durability RV owners demand.
Why Choose This 45 Gallon Holding Tank?
OEM-Grade Construction: Manufactured by Elkhart Plastics/Ameri-Kart using seamless rotational molding technology, this tank features 0.180" wall thickness for superior strength and leak-proof performance. The same quality trusted by major RV manufacturers.
Blank Tank Flexibility: Sold as a blank tank with no pre-installed fittings, allowing you to customize drain placement, vent locations, and sensor positioning to match your exact RV configuration. Perfect for custom builds, replacements, or upgrades.
Premium Black Polyethylene: UV-resistant black polyethylene construction prevents algae growth, resists chemical degradation from waste treatment products, and maintains structural integrity through temperature extremes.
Verified Authentic: When you order from ElkhartRVParts.com, you receive genuine Elkhart Plastics products with full manufacturer backing - not inferior knockoffs or questionable aftermarket alternatives.
Technical Specifications
- Capacity: 45 gallons
- Dimensions: 56" Length x 27" Width x 9" Height
- Part Numbers: EPI 4793, H1240002
- Material: Black polyethylene
- Wall Thickness: 0.180 inches
- Outlet: 3" (blank - no fittings included)
- Construction: Seamless one-piece roto-molded
- Weight: 24 lbs
- Manufacturer: Elkhart Plastics/Ameri-Kart
- Country of Origin: USA
Compatible Applications
This 45-gallon holding tank works perfectly for:
- Class A, B, and C motorhomes requiring mid-capacity waste storage
- Travel trailers and fifth wheels with 56" x 27" x 9" tank compartment space
- Black water holding tank replacement for aging or damaged tanks
- Grey water holding tank upgrades for extended dry camping
- Custom RV builds and conversions requiring flexible fitting placement
- RV repair shops and mobile service technicians
Complete Your Holding Tank Setup
Since this is a blank tank with no fittings, you'll need to add the appropriate components for your installation. Consider these compatible products:
Universal Holding Tank Fittings Kit with Level Sensors - Complete kit with drain valve, vent fitting, and tank level sensors for professional installation.
Alternative Capacity Options:
- 40 Gallon RV Holding Tank (42" x 40" x 7") - Compact alternative for tighter spaces
- 40 Gallon RV Holding Tank (59" x 28" x 8") - Similar footprint with slightly different dimensions
- 50 Gallon RV Holding Tank (62" x 26" x 10") - Increased capacity for extended trips
Browse More Options: View All RV Holding Tanks | Shop Replacement Parts & Fittings
Compare Similar Holding Tanks
| Model | Capacity | Dimensions (L x W x H) | Part Numbers | Best For | Details |
|---|---|---|---|---|---|
| 45 Gallon (Current) | 45 gallons | 56" x 27" x 9" | EPI 4793 / H1240002 | Mid-size RVs, standard installations | Current Product |
| 37 Gallon | 37 gallons | 60" x 24" x 8" | EPI 2006 / H1231002 | Smaller RVs, side drain configuration | View Details |
| 40 Gallon (Compact) | 40 gallons | 42" x 40" x 7" | VR40427HBLANK | Tight spaces, wider footprint | View Details |
| 40 Gallon (Extended) | 40 gallons | 59" x 28" x 8" | VR28598HRBLANK | Similar footprint, slightly less capacity | View Details |
| 50 Gallon | 50 gallons | 62" x 26" x 10" | EPI 992H | Extended trips, larger capacity needs | View Details |
Pro Tip: Measure your RV's tank compartment carefully before ordering. Consider not just the tank dimensions, but also clearance needed for fittings, mounting straps, and removal access.
Installation Considerations
Custom Fitting Installation: As a blank tank, you'll need to drill and install your own fittings. This allows precise placement of the drain outlet, vent, fill port, and tank level sensors to match your RV's plumbing configuration.
Professional Installation Recommended: While experienced DIYers can install this tank, professional installation ensures proper fitting placement, secure mounting, leak-free connections, and compliance with RV plumbing standards.
Mounting and Support: Ensure adequate support straps or brackets to prevent tank movement during travel. The tank should be fully supported across its bottom surface to prevent stress cracking.
Frequently Asked Questions
Q: Does this tank come with fittings installed?
A: No, this is sold as a blank tank with no fittings. This allows you to customize fitting placement for your specific RV configuration. You'll need to purchase fittings separately and install them yourself or have a professional do the installation.
Q: Can this be used for fresh water storage?
A: This tank is manufactured from black polyethylene and is designed for black water or grey water holding (waste water). For fresh water storage, you should use tanks made from FDA-approved white or natural polyethylene specifically designed for potable water.
Q: What size fittings does this tank accept?
A: The tank features a 3" outlet specification, but since it's a blank tank, you can drill and install fittings of various sizes based on your needs. Common fitting sizes include 3" drain outlets, 1.5" vents, and various sensor fittings.
Q: Is this tank compatible with my RV model?
A: Compatibility depends on your RV's tank compartment dimensions. Measure your existing tank or available space carefully. This tank measures 56" x 27" x 9" and holds 45 gallons. If you need help with product identification or compatibility questions, use our AI Live Chat for deep product knowledge and assistance.
Q: How long will this tank last?
A: With proper installation and maintenance, Elkhart Plastics holding tanks typically last 15-20+ years. The seamless roto-molded construction and 0.180" wall thickness provide exceptional durability and resistance to cracking, warping, and chemical degradation.
Why Buy From ElkhartRVParts.com?
- Authorized Dealer: Direct relationship with Elkhart Plastics ensures authentic OEM products
- Expert Support: Use our AI Live Chat for product guidance and technical assistance
- Quality Guarantee: 100% genuine parts backed by manufacturer warranty
- Fast Shipping: Quick processing and reliable delivery to get your RV back on the road
- Competitive Pricing: Fair pricing on premium OEM components
Ready to upgrade your RV's holding tank system? Add this premium 45-gallon Elkhart Plastics holding tank to your cart today and experience the quality difference that OEM-grade components provide.
| Material | black polyethylene |
|---|---|
| Width (inches) | 27 |
| Height (inches) | 9 |
| Length (inches) | 56 |
| Capacity (gallons) | 45 |
| Wall thickness (inches) | 0.18 |
| Outlet diameter (inches) | 3 |
- What are the dimensions of the 45 gallon rv holding tank? The dimensions of the tank are 56 inches in length, 27 inches in width, and 9 inches in height.
- Is the 45 gallon rv holding tank equipped with fittings? No, the tank is sold as a blank tank with no fittings. Fittings can be added upon request and quoted separately.
- What material is the rv 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 of the tank is a venting hole used during the manufacturing process and has no functional use for the end-user.
- How is the tank manufactured to ensure durability? The tank is manufactured using a roto-molding process, which creates a seamless tank with equal wall thickness and no weak spots, making it very strong and durable.
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.