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✓ ElkhartRVParts.com - The Only Authorized Place for Alpha Systems
✓ 100% Verified Authentic OEM Grade Part
🔄 REPLACEMENT PART NOTICE: This VR31577WBLANK tank is the official replacement for the discontinued 176BLANK model. Same premium quality with updated specifications for improved performance.
Alpha 50 Gallon Fresh Water Tank - VR31577WBLANK (Replaces 176BLANK)
The Alpha VR31577WBLANK 50-gallon fresh water tank is the official replacement for the discontinued 176BLANK model, delivering the same trusted Alpha quality with enhanced specifications. Measuring 57" x 31" x 9", this premium fresh water storage solution is crafted from FDA-approved polyethylene with seamless one-piece rotational molded construction for leak-proof reliability. Whether you're upgrading your RV, horse trailer, or marine vessel, this replacement tank provides superior durability and safe potable water storage for extended trips and off-grid adventures.
Why Choose the Alpha VR31577WBLANK Fresh Water Tank?
This 50-gallon RV fresh water tank combines authentic OEM-grade quality with practical design features that make it the ideal replacement for your 176BLANK tank. The seamless construction eliminates weak points and potential leak areas, while the FDA-approved material ensures your drinking water stays clean and safe. Built tougher than many standard factory-installed tanks, the VR31577WBLANK offers enhanced stain, corrosion, and rust resistance for years of dependable service in demanding environments.
- Official Replacement: Direct replacement for discontinued Alpha 176BLANK model
- Premium Construction: Seamless one-piece rotational molded design eliminates leak points
- FDA-Approved Material: Safe for potable drinking water storage
- Superior Durability: Stain, corrosion, and rust-resistant polyethylene construction
- Generous Capacity: 50-gallon capacity for extended trips without refilling
- Versatile Application: Perfect for RVs, horse trailers, marine vessels, and off-grid setups
- Authorized Dealer: 100% authentic Alpha product from ElkhartRVParts.com
Technical Specifications
| Part Number | VR31577WBLANK (Replaces 176BLANK) |
| Capacity | 50 Gallons |
| Dimensions | 57" L x 31" W x 9" H |
| Material | FDA-Approved Polyethylene |
| Construction | Seamless One-Piece Rotational Molded |
| Weight | 95.8 lbs |
| Barcode | 779315770006 |
| Manufacturer | Alpha Systems |
Compatible Applications and Use Cases
The Alpha VR31577WBLANK replacement tank is engineered for versatile fresh water storage across multiple applications. RV owners upgrading from the 176BLANK model will appreciate the improved dimensions and enhanced durability for full-time living or extended camping trips. Horse trailer operators benefit from the generous 50-gallon capacity for keeping animals hydrated during long hauls. Marine enthusiasts can rely on the corrosion-resistant construction for saltwater environments, while off-grid homesteaders and emergency preparedness planners value the safe, long-term potable water storage.
Ideal For
- Class A, B, and C motorhomes requiring 176BLANK replacement
- Travel trailers and fifth wheels with compatible mounting space
- Horse trailers and livestock transport vehicles
- Marine vessels and boats needing fresh water storage
- Off-grid cabins and tiny homes
- Emergency water storage and disaster preparedness
- Mobile food trucks and concession trailers
Compare Alpha Fresh Water Tank Options
| Model | Capacity | Dimensions | Part Number | Best For | View Details |
|---|---|---|---|---|---|
| Alpha 50 Gallon | 50 gal | 57" x 31" x 9" | VR31577WBLANK | 176BLANK replacement, wide shallow spaces | Current Product |
| Alpha 40 Gallon | 40 gal | 54" x 19.75" x 9" | VR20549WBLANK | Narrower width requirements | View Details → |
| Alpha 40 Gallon | 40 gal | 39" x 18" x 14" | 388BLANK | Taller vertical spaces | View Details → |
| Alpha 35 Gallon | 35 gal | 28" x 20" x 19" | 198BLANK | Compact square footprint | View Details → |
| Alpha 33 Gallon | 33 gal | 55" x 22" x 7.5" | VR225575WBLANK | Very shallow height restrictions | View Details → |
| Alpha 26 Gallon | 26 gal | 44" x 17" x 9" | VR17449WBLANK | Smaller RVs and trailers | View Details → |
💡 Helpful Tip: When replacing your 176BLANK tank, measure your available mounting space carefully. The VR31577WBLANK offers similar capacity with optimized dimensions for easier installation in wide, shallow compartments.
Installation and Compatibility Notes
This blank fresh water tank comes without pre-drilled fittings, allowing you to customize the inlet, outlet, and vent locations to match your specific installation requirements. This flexibility makes it an ideal replacement for the 176BLANK model, as you can replicate your existing plumbing configuration or upgrade to a more efficient layout. The 57" x 31" x 9" dimensions are designed to fit wide, shallow mounting spaces commonly found in Class A motorhomes and larger travel trailers.
Before installation, verify your mounting space dimensions and ensure adequate clearance for tank expansion. Professional installation is recommended for proper securing, plumbing connections, and venting to prevent tank damage and ensure safe operation.
Related Products You May Need
- Alpha 40 Gallon Fresh Water Tank VR20549WBLANK - Alternative size option
- Alpha 40 Gallon Fresh Water Tank 388BLANK - Different dimension configuration
- Browse All 40 Gallon Fresh Water Tanks
- Browse All 30 Gallon Fresh Water Tanks
- Complete Motorhome Water Tank Collection
Frequently Asked Questions
Is the VR31577WBLANK a direct replacement for the 176BLANK tank?
Yes, the Alpha VR31577WBLANK is the official replacement for the discontinued 176BLANK model. While dimensions may vary slightly, it provides the same 50-gallon capacity with enhanced construction quality and is designed to fit similar mounting spaces.
What is the difference between a blank tank and a pre-fitted tank?
A blank tank like the VR31577WBLANK comes without pre-drilled holes for fittings, giving you complete flexibility to position inlets, outlets, and vents exactly where you need them. This is ideal for custom installations or when replacing existing tanks with specific plumbing configurations.
Is this tank safe for drinking water?
Absolutely. The VR31577WBLANK is manufactured from FDA-approved polyethylene specifically rated for potable water storage, ensuring your drinking water remains safe and uncontaminated.
How do I determine if this tank will fit my RV?
Measure your available mounting space carefully, accounting for length, width, and height. The VR31577WBLANK measures 57" x 31" x 9" and is designed for wide, shallow compartments. If you're replacing a 176BLANK, this tank should fit your existing space with similar or improved fitment.
Where can I buy authentic Alpha fresh water tanks?
ElkhartRVParts.com is an authorized dealer for Alpha Systems products. When you purchase from us, you're guaranteed 100% authentic OEM-grade parts backed by our commitment to quality and customer service.
Why Buy from ElkhartRVParts.com?
As an authorized Alpha Systems dealer, ElkhartRVParts.com guarantees you receive genuine OEM-grade products, not inferior aftermarket imitations. Every VR31577WBLANK tank is sourced directly from Alpha Systems and ships quickly from our Elkhart, Indiana location - the heart of the RV industry. Our expert team understands RV water systems and can provide guidance for your specific replacement needs.
Ready to upgrade from your 176BLANK tank? Order your Alpha VR31577WBLANK 50-gallon fresh water tank today and experience the difference that authentic OEM quality makes. For product questions or installation guidance, use our AI Live Chat for instant expert assistance.
| Product type | Fresh Water Tank |
|---|
- What material is the alpha 50 gallons fresh water tank made from? The tank is made from premium FDA-approved polyethylene, which is durable and safe for storing drinking water.
- What are the dimensions of this fresh water tank? The tank measures 57 inches in length, 31 inches in width, and 9 inches in height.
- Is this tank suitable for use in an rv? Yes, this tank is designed as a perfect upgrade or replacement for RVs, as well as horse trailers and marine vessels.
- Does the tank have any seams or joints that could leak? No, the tank is constructed with seamless one-piece rotational molding, which provides superior strength and leak-proof reliability.
- Is the tank resistant to stains, corrosion, and rust? Yes, the tank is designed to be stain, corrosion, and rust resistant, ensuring it stays clean and functional over time.
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.