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Elkhart Plastics 42 Gallon RV Holding Tank - Premium Roto-Molded Construction
The Elkhart Plastics 42-gallon RV holding tank (Model 366H/H1253) delivers the durability and reliability you need for your RV waste management system. Measuring 66" x 21" x 9", this blank tank is engineered with precision roto-molding technology to provide seamless, leak-proof performance for years of trouble-free service.
Why Choose This Elkhart Plastics Holding Tank
Elkhart Plastics has earned its reputation as the industry leader in RV tank manufacturing through decades of innovation and quality control. This 42-gallon holding tank represents the pinnacle of their engineering expertise, featuring uniform 0.180" wall thickness throughout the entire tank body. Unlike cheaper alternatives with thin spots and weak seams, this roto-molded design ensures consistent strength in every square inch, so you can travel with confidence knowing your waste system won't fail when you need it most.
The high-density polyethylene construction meets all health and safety standards while providing exceptional impact resistance. Whether you're navigating rough terrain or dealing with extreme temperature swings, this tank maintains its structural integrity without cracking, warping, or developing leaks. The seamless construction eliminates the weak points found in welded or multi-piece tanks, giving you peace of mind on every journey.
Technical Specifications
- Capacity: 42 gallons
- Dimensions: 66" L x 21" W x 9" H
- Part Numbers: 366H, H1253
- Wall Thickness: 0.180" (uniform throughout)
- Material: High-density polyethylene (HDPE)
- Manufacturing Process: Roto-molded seamless construction
- Configuration: Blank tank (no pre-installed fittings)
- Weight: 27 lbs
- Barcode: 07786136
Custom Fitting Installation
This blank tank arrives without pre-installed fittings, giving you complete flexibility to configure your waste system exactly how you need it. Whether you're replacing an existing tank or building a custom RV setup, you can position drain valves, vent pipes, and inlet fittings precisely where your application requires. This customization capability makes it ideal for RV manufacturers, repair shops, and DIY enthusiasts who need a tank that fits their specific layout requirements.
Fittings can be professionally installed based on your specifications - contact us for a custom quote on fitting installation to ensure your tank is configured perfectly for your RV model and waste system design.
Applications and Compatibility
This 42-gallon holding tank is perfectly sized for mid-size to large travel trailers, fifth wheels, and motorhomes. The 66" length and 9" height profile allows it to fit in tight underbelly spaces while still providing substantial waste capacity for extended trips. Common applications include:
- Travel trailer and fifth wheel replacements
- Motorhome waste system upgrades
- Custom RV builds and conversions
- RV repair and restoration projects
- Fleet maintenance and OEM installations
Compare Similar Holding Tanks
| Model | Capacity | Dimensions (L×W×H) | Part Number | Best For | View Details |
|---|---|---|---|---|---|
| Elkhart 366H/H1253 | 42 Gallons | 66" × 21" × 9" | 366H, H1253 | Mid-size trailers, custom builds | Current Product |
| ICON H4141 | 40 Gallons | 59" × 28" × 8" | H4141 | Wider profile applications | View Details |
| ICON H3882 | 44 Gallons | 59" × 28" × 8.25" | H3882 | Slightly larger capacity | View Details |
| Jayco 602006000 | 37.5 Gallons | Jayco-specific | 602006000 | Jayco OEM replacement | View Details |
| ICON H3977 | 29 Gallons | 52" × 22" × 8.25" | H3977 | Compact installations | View Details |
💡 Helpful Tip: When selecting a holding tank, measure your available space carefully and consider both capacity needs and dimensional constraints. Blank tanks offer maximum installation flexibility for custom applications.
Frequently Asked Questions
What fittings do I need for this holding tank?
Fitting requirements vary based on your specific RV configuration. Most installations require a drain valve fitting (typically 3" termination), a vent pipe fitting, and an inlet fitting from your toilet. For assistance with fitting selection and custom installation quotes, use our AI Live Chat for expert product guidance.
How do I install fittings on a blank holding tank?
Professional installation is recommended to ensure proper sealing and prevent leaks. Fittings are typically installed using specialized hole saws and tank fitting flanges with gaskets. If you need fittings installed, contact us for a custom quote - we can configure your tank exactly to your specifications before shipping.
Will this tank fit my RV model?
With dimensions of 66" × 21" × 9", this tank fits most mid-size to large RVs with adequate underbelly clearance. Measure your existing tank or available space carefully, accounting for fitting protrusions and mounting hardware. For help determining compatibility, use our AI Live Chat for personalized assistance.
What makes Elkhart Plastics tanks better than other brands?
Elkhart Plastics uses a precision roto-molding process that creates seamless tanks with uniform wall thickness throughout. This eliminates weak spots, prevents premature failure, and ensures consistent quality. Their tanks meet all health and safety standards and are manufactured with fewer impurities for superior strength and longevity.
Can I use this tank for fresh water instead of waste?
While this tank is designed and marketed as a holding tank for waste water, Elkhart Plastics manufactures their tanks to meet health and safety standards. However, we recommend using tanks specifically designated for fresh water applications to ensure optimal water quality and safety.
The Elkhart Plastics Difference
When you choose an Elkhart Plastics tank, you're investing in over 50 years of manufacturing excellence. Their roto-molding process creates tanks that are stronger, more durable, and more reliable than conventional manufacturing methods. The seamless construction means no weak seams to split, no thin spots to crack, and no compromises in quality.
Every tank undergoes rigorous quality control to ensure it meets Elkhart Plastics' exacting standards. The result is a holding tank that can withstand the demanding conditions of RV life - from rough roads to temperature extremes - while maintaining leak-proof performance year after year.
Order Your Elkhart Plastics Holding Tank Today
Upgrade your RV waste system with the industry's most trusted holding tank manufacturer. This 42-gallon blank tank gives you the flexibility to create a custom installation while delivering the proven reliability that has made Elkhart Plastics the preferred choice of RV manufacturers and repair professionals nationwide.
Need help with fitting selection or custom configuration? Use our AI Live Chat for expert product knowledge and personalized assistance with your holding tank installation.
| Material | High-density plastic |
|---|---|
| Width (inches) | 21 |
| Height (inches) | 9 |
| Length (inches) | 66 |
| Capacity (gallons) | 42 |
| Wall thickness (inches) | 0.18 |
- What are the dimensions of the 42 gallon rv holding tank? The tank measures 66 inches in length, 21 inches in width, and 9 inches in height.
- Does the 42 gallon rv holding tank come with fittings included? No, the tank is blank and does not include fittings. Fittings can be added upon request with a quote.
- What material is used to make the 42 gallon rv holding tank? The tank is made from high-density plastic using a roto-molding process to ensure strength and durability.
- What is the wall thickness of the 42 gallon rv holding tank? The wall thickness of the tank is 0.180 inches.
- Is the 42 gallon rv holding tank safe for storing fresh water? Yes, Elkhart Plastic tanks are manufactured to meet quality and health safety standards, making them safe for fresh water storage.
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.