Elkhart Plastics - 30 Gallon RV Holding Tank - 54" x 22" x 8" - Blank Tank - EPI 1433 / H866
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Elkhart Plastics - 30 Gallon RV Holding Tank - 54" x 22" x 8" - Blank Tank - EPI 1433 / H866
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Replace Your RV Holding Tank with Confidence
The Elkhart Plastics 30 gallon RV holding tank (EPI 1433 / H866) is a direct OEM-grade replacement for gray water and black water systems in a wide range of travel trailers, fifth wheels, and motorhomes. At 54" x 22" x 8", the original print shows a 3-inch molded outlet and a 1-inch vent tube. Match their layout to your RV before ordering; separate plumbing fittings are not shown as included.
Features & Specifications
- Capacity: 30 gallons
- Dimensions: 54" x 22" x 8" (L x W x H)
- Part Numbers: EPI 1433 / H866
- Configuration: Print shows a 3-inch molded outlet and 1-inch vent tube; separate valves/adapters not included
- Material: Seamless rotational-molded black polyethylene — corrosion-proof and odor-resistant
- Country of Origin: USA
- Weight: 65 lbs
Why Choose This 30 Gallon RV Holding Tank?
When your holding tank cracks, leaks, or simply wears out, you need a replacement that fits right the first time. This 30 gallon RV holding tank from Elkhart Plastics is built to OEM specifications, meaning it matches the original factory dimensions exactly. The blank design gives you full control over fitting placement — ideal for custom builds, retrofits, or replacing a tank with a non-standard drain configuration.
Elkhart Plastics is one of the most trusted names in RV tank manufacturing, supplying major OEMs directly from their Indiana facility. When you order through ElkhartRVParts.com, you're getting the same tank that came in your rig from the factory — not an aftermarket imitation.
Compare RV Holding Tanks
Not sure if this is the right tank for your rig? Compare it against similar Elkhart Plastics holding tanks below to find the best fit by capacity and dimensions.
| Model / Part # | Capacity | Dimensions (L x W x H) | Profile | Best For | View Details |
|---|---|---|---|---|---|
| EPI 1433 / H866 (This Product) | 30 gal | 54" x 22" x 8" | Low-profile, wide | Travel trailers, custom builds | Current Product |
| EPI 4339 / H1259000 | 30 gal | 60" x 28" x 6.125" | Ultra-low profile | Tight floor clearance applications | View Details |
| EPI 2873 / H1128 | 29 gal | 60" x 28" x 7" | Low-profile | Fifth wheels, wider bays | View Details |
| EPI 1299 | 20 gal | 23.75" x 19" x 13.625" | Compact / tall | Class B vans, compact builds | View Details |
Tip: Match your replacement tank by length and width first — height (depth) is usually the most flexible dimension in most RV bays.
Technical Specifications
- Capacity: 30 gallons
- Length: 54"
- Width: 22"
- Height: 8"
- Part Numbers: EPI 1433 / H866 / H866033 / 1433
- SKU: H866033/1433
- Material: Rotational-molded black polyethylene (HDPE)
- Fittings: None — blank tank, fully customizable
- Shipping Weight: 65 lbs
- Country of Origin: USA
- Compatible Applications: Gray water, black water, waste holding
What's Included
- 1x Elkhart Plastics 30 gallon RV holding tank (EPI 1433 / H866)
- No fittings included — blank tank configuration
- Manufacturer warranty per Elkhart Plastics standard terms
Compatible Models & Alternatives
Looking for a different size or configuration? Browse related Elkhart Plastics holding tanks:
- 30 Gallon Ultra-Low Profile Tank — EPI 4339 / H1259000 (60" x 28" x 6.125")
- 29 Gallon RV Holding Tank — EPI 2873 / H1128 (60" x 28" x 7")
- 20 Gallon Compact Black Water Tank — EPI 1299 (23.75" x 19" x 13.625")
Frequently Asked Questions
Does this tank come with fittings?
The original print identifies a 3-inch molded outlet and a 1-inch vent tube. Separate valves and plumbing adapters are not shown as included. Check the connection and mounting layout in the retained print before ordering.
Is this compatible with gray water and black water systems?
Yes. The rotational-molded black polyethylene construction is chemically resistant and suitable for both gray water (sinks, shower) and black water (toilet) holding applications.
How do I know if this tank will fit my RV?
Measure your existing tank's length, width, and height (depth). The EPI 1433 measures 54" x 22" x 8". Also verify your bay opening dimensions and drain outlet location before ordering.
What is the wall thickness of this tank?
Elkhart Plastics uses a standard 0.180" wall thickness on their rotational-molded holding tanks, providing excellent durability for long-term RV use.
Can I order this tank with fittings pre-installed?
This listing is for the blank tank only. Contact our team via the AI Live Chat on this page for assistance sourcing compatible fittings or a pre-fitted configuration.
Why Buy from Elkhart RV Parts?
- Authorized Elkhart Plastics dealer — 100% authentic OEM-grade parts
- Ships direct from our Elkhart, Indiana warehouse
- Expert support via AI Live Chat — get fitment help before you buy
- Hassle-free returns and manufacturer warranty support
- Trusted by RV technicians, dealers, and DIY owners nationwide
Dimensioned Print and Gallery Views
The original print shows a 54-inch length, 22-inch upper width and 8-inch maximum tank-body depth. The body below the upper flange is 19 inches wide, with the 3-inch outlet centered 9 1/2 inches from either body edge. The shallow end is 5 3/4 inches deep, and the bottom slopes toward the drain. The print calls out a 1-inch radius along the bottom edges and a 1-inch vent tube.
The rendered views and rotatable model are reconstructions from the print, not measured manufacturing CAD. Undimensioned connection projections, vent position, seam blending and finish follow drawing proportions. Retain clearance for molded connections, plumbing and mounting; use the original blueprint for fitment.
| QAI Certification | REC 559-1 |
|---|---|
| Part number | H866033/1433 |
| Capacity (gallons) | 30 |
| Dimensions (inches) | 54 x 22 x 8 |
| Lead time | |
| Best for | RV owners needing extra waste capacity |
- What are the dimensions of the 30 gallon rv holding tank? The tank measures 54 inches in length, 22 inches in width, and 8 inches in height.
- Does the 30 gallon rv holding tank come with fittings included? The original print identifies a 3-inch molded outlet and a 1-inch vent tube. Separate valves, adapters and plumbing fittings are not shown as included. Match your installation to the retained print rather than assuming a completely featureless blank tank.
- Is this 30 gallon rv holding tank a standard stock item? No, this tank is a special order item and is custom made with an estimated production time of 12 to 16 weeks.
- Can i return or get a refund for this 30 gallon rv holding tank? No, due to this being a custom order, there are no returns or refunds available.
- Who manufactures the 30 gallon rv holding tank? The tank is manufactured by Elkhart Plastics/Ameri-Kart.
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Elkhart Plastics - 30 Gallon RV Holding Tank - 54" x 22" x 8" - Blank Tank - EPI 1433 / H866
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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.