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Alpha 40 Gallon RV Holding Tank - 59" x 28" x 8" - Left Drain - VR28598HLBLANK
The Alpha VR28598HLBLANK is a premium 40-gallon RV holding tank with left-side drain orientation, engineered for reliable black water waste management in recreational vehicles. This OEM-grade tank features rotational molded construction that creates a seamless, one-piece design for superior strength and leak-free performance. Measuring 59 inches long by 28 inches wide by 8 inches high with the drain positioned on the left side, this tank is designed to fit specific RV chassis configurations while maximizing waste capacity.
Every Alpha holding tank undergoes rigorous individual leak testing before shipment, ensuring you receive a quality-verified component ready for installation. The rotational molding process produces uniform wall thickness throughout the tank, eliminating weak points and providing exceptional durability against the constant movement, vibration, and temperature fluctuations experienced during RV travel.
Why Choose the Alpha VR28598HLBLANK Holding Tank
OEM-Grade Quality You Can Trust: These are the same high-quality holding tanks used by major RV manufacturers in new builds. When you choose Alpha, you're getting authentic OEM components that meet strict industry specifications for health, safety, and performance.
Superior Rotational Molded Construction: Unlike traditional multi-piece tanks that can develop leaks at seams, the rotational molding process creates a seamless, one-piece tank with uniform wall thickness. This manufacturing method produces a stronger, more durable tank that resists cracking, warping, and failure over time.
Left Drain Configuration: The left-side drain orientation (indicated by "HL" in the part number) is designed to match specific RV plumbing layouts. Verify your RV's drain valve location before ordering to ensure proper alignment with your existing waste system.
Leak-Tested Before Shipping: Quality assurance is built into every Alpha tank. Each unit is individually submerged and pressure tested for leaks before leaving the facility, giving you confidence in a problem-free installation and reliable long-term performance.
Built for the RV Lifestyle: RV holding tanks face unique challenges including constant road vibration, temperature extremes, and chemical exposure. Alpha tanks are specifically engineered to withstand these demanding conditions while maintaining structural integrity and odor containment.
Perfect Fit for Your RV: With precise dimensions of 59" x 28" x 8" and 40-gallon capacity, this tank is designed to fit specific RV chassis configurations. The VR28598HLBLANK provides optimal waste capacity while fitting within the space constraints of your RV's underbelly.
Technical Specifications
- Part Number: VR28598HLBLANK
- Capacity: 40 Gallons
- Dimensions: 59" Length x 28" Width x 8" Height
- Drain Orientation: Left Side (HL designation)
- Weight: 79.6 lbs
- Construction: Rotational Molded (Seamless One-Piece)
- Application: RV Black Water Holding Tank
- Material: High-Density Polyethylene (HDPE)
- Configuration: Blank (No Pre-Installed Fittings)
- Quality Testing: Individual Leak Testing Before Shipment
- Compliance: Meets All Health and Safety Standards
Common Applications and Compatibility
The Alpha VR28598HLBLANK holding tank is designed for RV black water waste management systems with left-side drain valve configurations. This 40-gallon capacity tank is ideal for:
- Travel trailers requiring 59" x 28" x 8" tank dimensions with left drain
- Fifth wheel RVs with left-side plumbing configurations
- Motorhome black water system replacements with left drain orientation
- RV restoration and repair projects requiring left-side drain
- Upgrading from damaged or leaking holding tanks
- New RV builds requiring OEM-grade components with left drain
The blank configuration (no pre-installed fittings) allows for custom fitting placement to match your specific RV plumbing layout. This flexibility ensures proper alignment with existing drain valves, vent pipes, and toilet connections while maintaining the left-side drain orientation.
Installation Considerations
Before purchasing, verify your RV's holding tank compartment dimensions to ensure proper fit. Measure the available space carefully, accounting for clearance around mounting points and plumbing connections. Most importantly, confirm your RV's drain valve is positioned on the left side to match this tank's drain orientation.
The blank tank configuration requires separate purchase of fittings, sensors, and mounting hardware based on your specific installation needs. Professional installation is recommended to ensure proper mounting, secure plumbing connections, and correct venting. Proper installation is critical for leak-free operation and compliance with RV waste system standards.
Compatible Products and Accessories
Complete your holding tank installation with these compatible products:
- Universal Holding Tank Fittings Kit with Level Sensors - Complete fittings package for black and grey water tanks
- Alpha VR28598HRBLANK - Same dimensions with right-side drain configuration
- Alpha VB24637HRBLANK - Alternative 40-gallon tank with 63" x 25" x 7" dimensions and right drain
Compare Similar 40 Gallon Alpha Holding Tanks
| Model | Dimensions (L x W x H) | Drain Side | Weight | Best For | View Details |
|---|---|---|---|---|---|
|
VR28598HLBLANK (Current Product) |
59" x 28" x 8" | Left | 79.6 lbs | RVs with left drain valve, longer narrower profile | You're viewing this product |
| VR28598HRBLANK | 59" x 28" x 8" | Right | 79.6 lbs | RVs with right drain valve, same dimensions | View Details |
| VR40427HBLANK | 42" x 40" x 7" | Standard | N/A | RVs requiring wider, shorter tank profile | View Details |
| VB24637HRBLANK | 63" x 25" x 7" | Right | N/A | RVs with right drain, longest profile available | View Details |
Helpful Tip: Drain orientation is critical for proper installation. Always verify your RV's drain valve location (left, right, or center) before ordering. Installing a tank with the wrong drain orientation will require additional plumbing modifications or may not be possible in tight spaces.
Why Buy From Elkhart RV Parts
Elkhart RV Parts is your trusted source for authentic Alpha RV holding tanks and components. We specialize in OEM-grade RV parts that meet or exceed original equipment specifications. Every product we sell is verified authentic, and we stand behind our parts with expert customer support.
Our AI-powered Live Chat can help you identify the correct holding tank for your specific RV make and model, confirm drain orientation requirements, answer technical questions about installation, and provide guidance on compatible fittings and accessories. We're here to ensure you get the right part the first time.
Frequently Asked Questions
What does "left drain" mean for this holding tank?
"Left drain" (indicated by "HL" in the part number) means the drain outlet is positioned on the left side of the tank when viewing it from the standard installation orientation. This must match your RV's drain valve location for proper installation.
Can I use this tank if my RV has a right-side drain valve?
No, you should order the VR28598HRBLANK instead, which has the same dimensions but with a right-side drain orientation to match your RV's plumbing configuration.
What does "blank" mean for this holding tank?
"Blank" indicates this tank has no pre-installed fittings, drain valves, or sensor ports. This configuration allows you to customize fitting placement to match your specific RV plumbing layout while maintaining the left-side drain orientation.
How do I know if this tank will fit my RV?
Measure your existing holding tank compartment carefully, noting length, width, and height. Compare these measurements to the tank dimensions (59" x 28" x 8"). Also verify your drain valve is on the left side and check clearance for mounting brackets and plumbing connections. Our AI Live Chat can help you confirm compatibility for your specific RV model.
What fittings do I need for installation?
You'll need drain valves, vent fittings, toilet connection fittings, and optionally tank level sensors. The Universal Holding Tank Fittings Kit provides a complete solution for most installations.
Is this tank suitable for grey water or only black water?
While this tank is designed for black water (toilet waste) applications, it can technically be used for grey water (sink/shower waste) as well. Both applications use the same tank construction and materials.
How long do Alpha holding tanks typically last?
With proper installation and maintenance, Alpha holding tanks can last 15-20+ years. The rotational molded construction and high-density polyethylene material provide exceptional durability and resistance to chemical degradation.
Ready to Replace Your RV Holding Tank?
Get the OEM-grade Alpha VR28598HLBLANK holding tank with left-side drain configuration. Leak-tested, durable, and built to last.
Questions about drain orientation, compatibility, or installation? Use our AI Live Chat for instant expert guidance on selecting the right holding tank and fittings for your RV.
| Width (inches) | 28 |
|---|---|
| Height (inches) | 8 |
| Length (inches) | 59 |
| Capacity (gallons) | 40 |
| Construction material | Rotational molded plastic |
- What is the capacity of the alpha holding tank? The Alpha holding tank has a capacity of 40 gallons.
- What are the dimensions of this holding tank? The dimensions of the tank are 59 inches in length, 28 inches in width, and 8 inches in height.
- Is this holding tank compatible with most rvs? Yes, this tank is an authentic OEM part used in new RV builds by major manufacturers, ensuring perfect compatibility and performance.
- How durable is the alpha 40-gallon holding tank? The tank is made using extra durable rotational molded construction, creating a seamless one-piece tank that provides superior strength and longevity.
- Does the holding tank undergo quality testing? Yes, every tank is individually submerged and tested for leaks before shipping to guarantee a reliable and problem-free installation.
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.

