---
✓ ElkhartRVParts.com - The Only Authorized Place for Alpha
✓ 100% Verified Authentic OEM Grade Part
Alpha 63 Gallon RV Fresh Water Tank - 988BLANK
Upgrade your RV's fresh water storage with the Alpha 988BLANK, a premium 63-gallon fresh water tank engineered to meet or exceed OEM standards. This rotational molded tank features FDA-approved polyethylene construction, seamless one-piece design, and superior durability that outlasts factory-installed tanks. With dimensions of 58" x 39" x 7", this low-profile tank maximizes water capacity while fitting in tight vertical spaces.
Why Choose the Alpha 988BLANK Fresh Water Tank?
FDA-Approved Polyethylene for Safe Drinking Water
Your family's health matters. The 988BLANK is crafted from high-quality, FDA-approved polyethylene that's specifically certified for safe drinking water storage. Unlike some factory tanks that use questionable materials, this Alpha tank ensures your water stays clean, fresh, and safe to drink mile after mile.
Seamless One-Piece Rotational Molded Construction
Engineered without seams, joints, or weak points, this rotational molded tank delivers superior strength and leak-proof reliability. The seamless construction eliminates the failure points common in welded or multi-piece tanks, giving you peace of mind that your water stays where it belongs.
Stain, Corrosion, and Rust Resistant
Built to last for years of hard use, the 988BLANK resists stains, corrosion, and rust even in harsh conditions. The durable polyethylene material stays clean and functional season after season, ensuring your water stays fresh and your tank stays dependable.
Large Capacity in a Low-Profile Design
With 63 gallons of capacity in just 7 inches of height, this tank is perfect for installations where vertical clearance is limited but you need maximum water storage. The 58" x 39" footprint provides generous capacity while fitting into spaces where taller tanks won't work.
Superior to Factory-Installed Tanks
Many RV manufacturers cut corners with thin-walled, inferior tanks. The Alpha 988BLANK is built tougher than typical OEM tanks, offering enhanced durability and longevity that makes it the smart choice for replacements or upgrades.
Technical Specifications
- Part Number: 988BLANK
- Capacity: 63 gallons
- Dimensions: 58" Length x 39" Width x 7" Height
- Material: FDA-approved polyethylene
- Construction: Seamless rotational molded one-piece design
- Tank Type: Fresh water storage
- Weight: Lightweight yet durable construction
- Dimensional Weight: 95 lbs
- SKU: 988BLANK
- Barcode: 779988000004
- Manufacturer: Alpha Systems
- Condition: Brand new OEM quality
Perfect Applications for This Fresh Water Tank
- RV and motorhome fresh water storage replacement
- Fifth wheel and travel trailer water system upgrades
- Horse trailer fresh water supply
- Marine vessel potable water storage
- Off-grid cabin and tiny home water systems
- Emergency water storage for mobile applications
- Custom RV builds and conversions requiring high capacity
Installation and Compatibility
The Alpha 988BLANK is designed as a direct replacement for OEM fresh water tanks in many RV models. Before ordering, measure your existing tank compartment to ensure proper fitment. The low 7-inch height makes this tank ideal for under-floor installations, basement storage areas, or any location where vertical space is at a premium but you need maximum water capacity.
Installation requires basic plumbing skills and standard RV water system fittings. The tank features standard inlet and outlet ports compatible with most RV fresh water systems. Professional installation is recommended for optimal performance and warranty compliance.
Comparison: Find Your Perfect Alpha Fresh Water Tank Size
| Model | Capacity | Dimensions (L x W x H) | Best For | View Details |
|---|---|---|---|---|
| 988BLANK | 63 gallons | 58" x 39" x 7" | Large capacity, low-profile installations | Current Product |
| VR34606WBLANK | 47 gallons | 60" x 34" x 7" | Low-profile, medium capacity | View Details → |
| 388BLANK | 40 gallons | 39" x 18" x 14" | Compact footprint, smaller RVs | View Details → |
Pro Tip: Measure your tank compartment carefully before ordering. Account for inlet/outlet fittings and allow clearance for installation and removal. The 988BLANK's low-profile design maximizes capacity while fitting in tight vertical spaces.
Explore More Fresh Water Tank Options
Browse our complete selection of 40 Gallon RV Fresh Water Tanks or shop all RV Fresh Water Tanks to find the perfect capacity for your needs.
What RV Owners Are Saying
With a 4.6 out of 5-star rating based on 5 verified customer reviews, the Alpha 988BLANK consistently earns praise for its quality construction, leak-proof performance, and superior durability compared to factory tanks. Customers love the peace of mind that comes with FDA-approved materials and authentic Alpha quality.
Frequently Asked Questions
Is this tank FDA-approved for drinking water?
Yes, the 988BLANK is manufactured from FDA-approved polyethylene specifically certified for safe potable water storage.
What are the exact dimensions of this tank?
The tank measures 58 inches long, 39 inches wide, and 7 inches tall, making it ideal for low-profile installations with maximum capacity.
Will this tank fit my RV?
The 988BLANK is designed as a replacement for many OEM fresh water tanks. Measure your existing tank compartment to confirm fitment before ordering.
Is this tank seamless or does it have welded seams?
This is a seamless one-piece rotational molded tank with no welds or joints, providing superior strength and leak-proof reliability.
How much does this tank weigh when filled?
When filled with 63 gallons of water, the total weight will be approximately 525 pounds (63 gallons x 8.34 lbs/gallon plus tank weight).
Can this tank be used for marine applications?
Yes, the FDA-approved polyethylene construction makes this tank suitable for RVs, horse trailers, and marine vessels requiring potable water storage.
Why Buy from Elkhart RV Parts?
- 100% Authentic OEM Parts: We sell only genuine Alpha products - never knockoffs or imitations
- Expert Product Knowledge: Our team knows RV water systems inside and out - use our AI Live Chat for instant assistance
- Fast Shipping: Most orders ship within 1-2 business days
- 30-Day Return Policy: Shop with confidence knowing you're protected
- Authorized Alpha Dealer: Factory-backed quality and support
Upgrade Your RV Fresh Water System Today
Replace your worn-out factory tank with the Alpha 988BLANK - 63 gallons of FDA-approved, leak-proof fresh water storage built to last. Low-profile design, seamless construction, and authentic OEM quality.
Questions about fitment or installation? Use our AI Live Chat for expert guidance!
| Product type | Fresh Water Tank |
|---|
- What are the dimensions of the alpha 63 gallons fresh water tank? The dimensions of the tank are 58 inches in length, 39 inches in width, and 7 inches in height.
- Is this fresh water tank safe for storing drinking water? Yes, the tank is made from premium FDA-approved polyethylene material, making it safe for storing drinking water.
- Can this fresh water tank be used in an rv or marine vessel? Yes, it is designed for versatile compatibility and is ideal for use in RVs, horse trailers, and marine vessels.
- What makes this fresh water tank durable and reliable? The tank features seamless one-piece construction, is stain, corrosion, and rust resistant, and is built tougher than many standard factory-installed tanks for enhanced durability.
- Is this product an original equipment manufacturer (oem) quality part? Yes, this fresh water tank is 100% authentic OEM-quality, crafted to meet or exceed factory standards.
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.

