31 Gallon RV Holding Tank - Black Gray Water Tank 27.5" x 20.5" x 18.5" - Elkhart Plastics H1235005

QAI Listed — REC 559-1
Added to catalog: March 17, 2020
Last product update: June 7, 2026 at 2:04 AM

Sale price$336.49
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31 gal · 27.5 x 20.5 x 18.5 · H1235005
Tank Type
Holding/Waste $336.49
Never Run on Empty: The Ultimate 31 Gallon RV Holding Tank for Your Adventure
Specifications drawing for 31 Gallon RV Holding Tank - Black Gray Water Tank 27.5
This 31-gallon RV holding tank is crafted from durable, seamless black polyethylene with a sturdy 0.180-inch wall thickness for reliable, leak-resistant performance. Measuring 27 1/2" x 20 1/2" x 18 1/2", it features a 3-inch outlet and comes as a blank tank, allowing you to add fittings as needed for your setup. Built to meet strict quality and safety standards, it’s a dependable solution for your RV’s waste management needs.
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31 Gallon RV Holding Tank - Premium Quality by Elkhart Plastics

Upgrade your RV's waste management system with this durable 31-gallon holding tank from Elkhart Plastics, a trusted name in RV components. Designed for reliable performance and long-lasting durability, this tank is perfect for black water or gray water applications.

Key Benefits

  • Optimal Capacity: 31-gallon capacity provides extended use between dump station visits
  • Space-Efficient Design: Compact dimensions (27.5" x 20.5" x 18.5") fit most RV configurations
  • Built to Last: Manufactured by Elkhart Plastics using high-quality, impact-resistant materials
  • Versatile Application: Suitable for both black water and gray water systems
  • Easy Installation: Standard fittings and connections for straightforward replacement

Technical Specifications

  • Capacity: 31 Gallons
  • Dimensions: 27.5" L x 20.5" W x 18.5" H
  • Weight: 20 lbs
  • Manufacturer: Elkhart Plastics/Ameri-Kart
  • Part Number: H1235005 (EPI 4852)
  • SKU: H1235005
  • Barcode: 51816507
  • Material: High-density polyethylene (HDPE)

Perfect For

  • RV holding tank replacement and upgrades
  • Travel trailers, fifth wheels, and motorhomes
  • Black water waste systems
  • Gray water drainage systems
  • Custom RV builds and renovations
  • Commercial RV fleet maintenance

Why Choose Elkhart Plastics?

Elkhart Plastics is an industry leader in RV tank manufacturing, known for producing durable, leak-resistant tanks that withstand the rigors of road travel. This holding tank features robust construction that resists cracking, warping, and chemical degradation from waste and cleaning products.

Installation & Compatibility

This holding tank is designed as a direct replacement for many RV models. Before ordering, verify your existing tank dimensions and connection locations to ensure proper fitment. Standard RV plumbing fittings make installation straightforward for DIY enthusiasts or professional installers.

In Stock & Ready to Ship

We maintain inventory of this popular holding tank for immediate shipment. Get your RV back on the road quickly with fast, reliable delivery from Elkhart RV Parts.

Need help with product identification or have questions? Use our AI Live Chat for expert assistance with deep product knowledge and compatibility guidance.

Order your 31-gallon RV holding tank today and enjoy reliable waste management on all your adventures!

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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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