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Premium 40 Gallon RV Fresh Water Tank - Elkhart Plastics EPI 3029 / W1565
Upgrade your RV, horse trailer, or marine vessel with this professional-grade 40 gallon fresh water storage tank from Elkhart Plastics. Engineered with precision roto-molding technology and FDA-approved materials, this tank delivers superior performance and reliability for years of worry-free travel. Measuring 57 inches long by 29.75 inches wide by 5.75 inches high, this low-profile design maximizes storage capacity while fitting in tight under-floor spaces.
Complete Product Specifications
- Capacity: 40 Gallons (151.4 Liters)
- Exact Dimensions: 57" L x 29.75" W x 5.75" H (144.8cm x 75.6cm x 14.6cm)
- Wall Thickness: 0.180 inches (4.57mm) - Heavy-duty construction
- Part Numbers: EPI 3029, W1565
- SKU: 3029/W1565000
- Weight: 49 lbs (22.2 kg)
- Material: FDA-approved high-density polyethylene (HDPE)
- Configuration: Blank tank (no pre-installed fittings - custom fittings available upon request)
- Barcode: 39168059
- Country of Origin: Made in USA
Why Choose This Elkhart Plastics Fresh Water Tank
FDA-Approved Safe Drinking Water Storage: Manufactured from premium high-density polyethylene that meets strict FDA standards for potable water storage. Unlike many factory-installed tanks, this ensures your drinking water stays pure and safe for your family on every adventure.
Seamless Roto-Molded Construction: Advanced rotational molding creates a one-piece tank with uniform 0.180-inch wall thickness throughout - no seams, no joints, no weak spots. This manufacturing process eliminates common failure points found in welded or multi-piece tanks, ensuring leak-proof performance.
Superior Durability and Longevity: Built tougher than standard OEM tanks with extra-thick walls that resist impacts, vibrations, and the rigors of road travel. The seamless design prevents stress cracks and ensures leak-proof performance for the life of your vehicle.
Stain, Corrosion and Rust Resistant: High-quality polyethylene construction naturally resists staining, corrosion, and rust - keeping your water fresh and your tank looking new even after years of use in harsh conditions.
Perfect For Multiple Applications
- RV and Motorhome Owners: Ideal replacement or upgrade for worn factory tanks in Class A, Class B, Class C motorhomes, travel trailers, and fifth wheels
- Horse Trailer Conversions: Reliable fresh water for long hauls, competitions, and extended trips
- Marine Vessels: Dependable potable water storage for boats, yachts, and sailboats
- Custom Builds: Perfect for DIY camper conversions, van builds, and custom RV projects
- Emergency Preparedness: Excellent for off-grid water storage solutions and emergency backup systems
- Forest River RVs: Common replacement for Forest River models originally equipped with Elkhart tanks
Elkhart Plastics Quality Guarantee
Elkhart Plastics has earned its reputation as the industry leader in rotational molded tanks through decades of innovation and quality craftsmanship. Every tank is manufactured to meet or exceed stringent quality and health safety standards, with fewer impurities and superior structural integrity compared to imported alternatives. When you choose Elkhart Plastics, you're choosing American-made quality that lasts.
Installation and Customization Options
This blank tank ships without pre-installed fittings, giving you complete flexibility to configure it exactly for your specific application. Whether you need inlet fittings, outlet connections, vent installations, or sensor ports, you can position them precisely where needed. Need help with custom fittings? Check out our Universal Fresh Water Tank Fittings Kit for a complete installation solution.
Low-Profile Design Benefits
The slim 5.75-inch height profile makes this tank ideal for tight under-floor installations, maximizing your interior space while providing substantial 40-gallon capacity. The 57" x 29.75" footprint fits standard RV chassis configurations and can be easily integrated into most floor plans without major modifications.
What Sets This Tank Apart From Factory Replacements
- Thicker walls (0.180") vs. standard factory tanks (typically 0.125")
- True FDA-approved food-grade polyethylene material certified for drinking water
- Seamless construction eliminates leak-prone seams and weld points
- Superior impact resistance for rough road conditions and extreme temperatures
- Longer lifespan than typical OEM replacements - often outlasts the vehicle
- Made in USA with strict quality control and testing
- Compatible with standard RV water systems and fittings
Compare 40 Gallon RV Fresh Water Tank Options
| Model | Capacity | Dimensions (LxWxH) | Part Number | Best For | View Details |
|---|---|---|---|---|---|
| Elkhart Plastics 3029 | 40 Gallons | 57" x 29.75" x 5.75" | EPI 3029 / W1565 | Low-profile under-floor installations | Current Product |
| Alpha 388BLANK | 40 Gallons | 39" x 18" x 14" | 388BLANK | Compact footprint, taller profile | View Details |
| Alpha VR20549WBLANK | 40 Gallons | 54" x 19.75" x 9" | VR20549WBLANK | Medium profile, narrow width | View Details |
| ICON WT3618 | 40 Gallons | 42" x 23.5" x 10" | WT3618 AmeriKart | Balanced dimensions, versatile fit | View Details |
| Elkhart 1562W | 40 Gallons | 39" x 16" x 16" | EPI 1562W / W1609 | Cube-style, vertical installations | View Details |
Helpful Tip: When choosing a 40 gallon tank, measure your available installation space carefully. Low-profile tanks like the 3029 are ideal for under-floor mounting, while taller tanks work better for vertical compartments or side-mount installations.
Common Replacement Scenarios
This tank is frequently used to replace failed or leaking factory tanks in Forest River RVs, Keystone, Jayco, and other manufacturers that originally specified Elkhart Plastics tanks. If your original tank shows signs of cracking, leaking, discoloration, contamination, or has developed a plastic taste in your water, this is the premium replacement solution that will restore your fresh water system to like-new condition.
Related Products and Complete Your Setup
Browse our complete selection of 40 Gallon RV Fresh Water Tanks for other configurations. Looking for different sizes? Check out our 10 Gallon RV Fresh Water Tank for compact installations or our 100 Gallon Fresh Water Tank for extended trips and full-time RV living.
Don't forget to add our Universal Fresh Water Tank Fittings Kit with Water Level Sensors for a complete, professional installation with everything you need in one package.
Frequently Asked Questions
What is the best RV fresh water tank for a 40 gallon capacity?
The Elkhart Plastics 40 gallon tank (EPI 3029 / W1565) is considered the industry standard for quality and reliability. Its seamless roto-molded construction and FDA-approved materials make it superior to most factory-installed tanks.
How do I replace my RV fresh water tank?
Replacing an RV fresh water tank typically involves draining the old tank, disconnecting fittings, removing mounting hardware, installing the new tank, and reconnecting plumbing. Use our AI Live Chat for detailed guidance based on your specific RV model and configuration.
Where can I buy authentic Elkhart Plastics water tanks?
ElkhartRVParts.com is an authorized dealer for genuine Elkhart Plastics tanks. We guarantee 100% authentic OEM-grade parts with full manufacturer specifications.
Will this 40 gallon tank fit my RV?
This tank measures 57" x 29.75" x 5.75" and fits most RVs originally equipped with 40-gallon Elkhart tanks. Measure your existing tank compartment and compare dimensions. Use our AI Live Chat for fitment verification based on your RV make and model.
What fittings do I need for a blank RV water tank?
Most installations require an inlet fitting, outlet fitting, drain valve, and vent. Our Universal Fresh Water Tank Fittings Kit includes everything you need plus water level sensors.
Is this tank safe for drinking water?
Yes, this tank is manufactured from FDA-approved high-density polyethylene specifically certified for potable drinking water storage. It meets all health and safety standards for fresh water systems.
How thick are the walls on this Elkhart Plastics tank?
This tank features 0.180-inch (4.57mm) wall thickness, which is significantly thicker than standard factory tanks that typically measure 0.125 inches. The extra thickness provides superior durability and impact resistance.
Can I install fittings myself on a blank tank?
Yes, blank tanks allow you to customize fitting placement for your specific installation. You'll need appropriate hole saws, tank fittings, and sealant. Our AI Live Chat can provide step-by-step installation guidance and recommend the right fittings for your application.
Need Help With Fitment or Custom Fittings?
Our AI Live Chat has deep product knowledge and can help you verify compatibility, recommend fitting configurations, and answer technical questions about installation. Get instant expert assistance to ensure you order the right tank for your specific application.
Order Today - Fast Shipping Available
In stock and ready to ship from our warehouse. Upgrade your RV's fresh water system with confidence knowing you're getting authentic Elkhart Plastics quality backed by our commitment to customer satisfaction. Most orders ship within 1-2 business days.
| Material | High-quality polyethylene |
|---|---|
| Width (inches) | 29.75 |
| Height (inches) | 5.75 |
| Length (inches) | 57 |
| Capacity (gallons) | 40 |
| Wall thickness (inches) | 0.18 |
- What is the capacity of the 40 gallon rv water tank? The tank has a capacity of 40 gallons.
- What are the dimensions of this rv water tank? The tank measures 57 inches in length, 29 3/4 inches in width, and 5 3/4 inches in height.
- Is the tank made from materials safe for storing drinking water? Yes, the tank is made from premium FDA-approved polyethylene material, making it safe for storing fresh drinking water.
- Does the water tank come with fittings included? No, the tank is blank with no fittings included. Fittings can be added upon request and quoted separately.
- What manufacturing process is used for this water tank and what are its benefits? The tank is made using roto-molding, which creates a seamless one-piece construction with walls of equal thickness, ensuring superior strength, leak-proof reliability, and durability.
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.