53 Gallon RV Holding Tank 28" x 26" x 22.5" - Black Water Gray Water Tank EPI 9556H

Elkhart RV PartsSKU: MRM-9556H

Sale price$336.78 Regular price$476.14
FREE Delivery Estimate December 29 – January 3
Tank Up for Adventure with the 53-Gallon RV Holding Tank
Specifications drawing for 53 Gallon RV Holding Tank 28
This 53-gallon RV holding tank is made from durable black polyethylene with a robust 0.180-inch wall thickness for long-lasting performance. Its seamless roto-molded construction and standard 3-inch outlet make installation easy and reliable, while the compact 28" x 26" x 22.5" size fits a variety of RV setups. Built to resist impacts and wear, it's a dependable choice for your waste management needs on the road.
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53 Gallon RV Holding Tank - Premium Rotomolded Construction

Upgrade your RV's waste management system with this professional-grade 53-gallon holding tank from Elkhart Plastics. Engineered for durability and reliability, this tank is the perfect solution for black water or gray water storage in motorhomes, travel trailers, and campers.

Key Specifications

  • Capacity: 53 gallons
  • Dimensions: 28" L x 26" W x 22.5" H
  • Outlet Size: 3" standard (included)
  • Wall Thickness: 0.180" heavy-duty construction
  • Material: Black polyethylene (rotomolded)
  • Part Numbers: EPI 9556H, H1301003, MRM 9556, ERV127700A, T9556H54
  • SKU: MRM-9556H
  • Barcode: 68860568

Why Choose Elkhart Plastics Holding Tanks?

Rotomolded Excellence: Unlike cheaper welded tanks, Elkhart Plastics uses advanced rotational molding technology to create seamless, one-piece tanks with uniform wall thickness throughout. This eliminates weak spots, seams, and potential failure points that plague inferior tanks.

Superior Strength & Durability: The 0.180" thick walls are engineered to withstand the constant vibration, road shock, and temperature extremes your RV experiences. High-density polyethylene construction resists cracking, warping, and UV degradation for years of reliable service.

Health & Safety Certified: Manufactured to meet strict quality and health safety standards with fewer impurities than competitor tanks. Safe for both black water (sewage) and gray water (sink/shower) applications.

Perfect For These Applications

  • Black water holding tank replacement
  • Gray water holding tank upgrade
  • Motorhome waste system repair
  • Travel trailer plumbing renovation
  • Fifth wheel holding tank replacement
  • Custom RV build projects
  • Commercial RV fleet maintenance

Compatible RV Brands

This tank is OEM-spec and works with Rev Group, Renegade, and many other major RV manufacturers. Verify your existing tank dimensions before ordering to ensure proper fitment.

Important Manufacturing Note

About the Sealed Hole on Top: You may notice a sealed hole on the top of the tank - this is completely normal and intentional. This is a venting hole used during the rotomolding manufacturing process and has been permanently sealed. It serves no functional purpose for the end user and does not affect the tank's performance or integrity.

What's Included

  • 1x 53-gallon rotomolded holding tank
  • Standard 3" outlet fitting
  • Elkhart Plastics quality certification

Installation & Compatibility

This tank measures 28" x 26" x 22.5" - please measure your existing tank compartment carefully before ordering. Professional installation is recommended to ensure proper mounting, venting, and connection to your RV's plumbing system.

Need help identifying the right tank or have questions about compatibility? Use our AI Live Chat for instant product assistance and expert guidance.

Order your genuine Elkhart Plastics 53-gallon RV holding tank today and experience the difference that OEM-quality construction makes.

100% Authentic OEM Parts

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.

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