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Replacing an RV holding tank is straightforward when you source the exact OEM part. This 37-gallon black polyethylene tank from Elkhart Plastics measures 60" x 24" x 8" with a 3" side drain, making it a direct fit for Jayco travel trailers, fifth wheels, and a range of other RVs with matching tank spaces. Seamless roto-molded construction means zero joints — just a single continuous shell built to outlast the original.
Features & Specifications
- 37-gallon capacity — practical size for extended trips between dump station visits
- 3" side drain — positioned for clean, complete tank evacuation; easier to access than bottom-drain designs in tight underbelly spaces
- Seamless roto-molded black polyethylene — no seams, no weld joints, no weak points where leaks develop
- UV-resistant material — holds up through freeze-thaw cycles and temperature extremes
- Dimensions: 60" x 24" x 8" — low-profile height fits tight underbelly installations
- Part numbers: EPI 2006 / H1231002 — cross-references directly to OEM spec sheets
- Made in USA by Elkhart Plastics / Ameri-Kart, supplier to major RV manufacturers
Why Choose This RV Holding Tank?
The 37-gallon EPI 2006 is a common OEM replacement in low-height underbelly configurations — situations where an 8" tall tank is the constraint and you need to maximize gallons within that limit. The long 60" x 24" footprint gives you strong capacity without exceeding vertical clearance.
Side drains reduce the risk of accidental contact during installation and cleaning compared to bottom-drain designs. The 3" outlet is standard size, compatible with most RV waste system hose and dump valve fittings without adapters.
Compare RV Holding Tanks
Not sure which Elkhart Plastics tank fits your RV? Here's how nearby capacities compare:
| Model | Capacity | Dimensions (L x W x H) | Drain | Best For | View Details |
|---|---|---|---|---|---|
| EPI 2006 / H1231002 | 37 gal | 60" x 24" x 8" | Side | Low-height underbelly, extended capacity | Current Product |
| EPI 3010 / H1282 | 34 gal | 70.25" x 21.5" x 8" | — | Longer, narrower tank space at 8" height | View Details |
| EPI 1163 / H865005 | 41 gal | 59" x 28" x 8" | — | More capacity in a wider, shorter tank run | View Details |
| EPI 4793 / H1240 | 45 gal | 56" x 27" x 9" | — | Maximum capacity with one extra inch of height | View Details |
Tip: Measure your existing tank bay — length, width, and available height — before ordering. The 8" height on the EPI 2006 is a common fit, but drain position and outlet direction must also match your installation before confirming.
Technical Specifications
- Capacity: 37 Gallons
- Dimensions: 60" L x 24" W x 8" H
- Material: Black UV-resistant polyethylene
- Construction: Seamless roto-molded
- Drain Location: Side
- Drain Size: 3" outlet
- Weight: 88 lbs
- Part Numbers: EPI 2006, H1231002
- Manufacturer: Elkhart Plastics / Ameri-Kart
- Country of Origin: USA
What's Included
- 37-gallon RV holding tank (tank only)
- Drain fittings and mounting hardware not included — your existing hardware is likely reusable
Compatible Models & Alternatives
The EPI 2006 / H1231002 is a common OEM holding tank in Jayco travel trailers and fifth wheels, and fits a range of Class A, B, and C motorhomes with matching 60" x 24" x 8" tank bays. Always verify your specific RV's dimensions and drain placement before ordering.
Need a different capacity or footprint?
- 34 Gallon Elkhart Plastics Holding Tank — EPI 3010 / H1282
- 41 Gallon Elkhart Plastics Holding Tank — EPI 1163 / H865005
- 45 Gallon Elkhart Plastics Holding Tank — EPI 4793 / H1240
Frequently Asked Questions
Can this tank be used for both black water and gray water?
Yes. The EPI 2006 is a general-purpose holding tank suitable for either black water (toilet waste) or gray water (sink and shower drainage), depending on your RV's plumbing configuration.
What is the difference between EPI 2006 and H1231002?
They refer to the same tank. EPI 2006 is Elkhart Plastics' internal model number; H1231002 is the manufacturer SKU. Use either to cross-reference your RV's parts manual or OEM spec sheet.
Will this tank fit my Jayco?
The EPI 2006 is commonly used in Jayco travel trailers and fifth wheels, but fit depends on your specific bay dimensions and drain placement. Measure your tank space — length, width, and height — and confirm the side drain outlet location before ordering.
Does this tank include fittings or hardware?
No — this is the tank only. Drain fittings, vent caps, and mounting hardware are sold separately. If you're replacing an existing tank, your current hardware is often reusable.
Is this an OEM part or aftermarket?
This is an OEM-quality tank manufactured by Elkhart Plastics, the original supplier to major RV brands. It is not an aftermarket reproduction.
How long does this tank take to ship?
Most orders process same or next business day. Delivery is typically 5–7 business days — oversized tanks like this ship via heavy parcel service.
Why Buy from Elkhart RV Parts?
We stock genuine Elkhart Plastics tanks and ship them directly. Our team works at the part-number level — not a general marketplace drop-shipper. If you need help confirming fit before ordering, our AI Live Chat can cross-reference your bay dimensions and drain position against your specific RV model.
| QAI Certification | REC 559-1 |
|---|---|
| Part number | H1231002/2006 |
| Capacity (gallons) | 37 |
| Dimensions (inches) | 60x24x8 |
| Lead time | |
| Best for | RV waste management upgrade |
- What are the dimensions of the 37 gallon rv holding tank? The tank measures 60 inches in length, 24 inches in width, and 8 inches in height.
- Is the 37 gallon rv holding tank pre-fitted with any fittings? No, the tank is blank with no fittings. Fittings can be added upon request and quote.
- What material is the rv holding tank made from? It is made from black polyethylene with a wall thickness of 0.180 inches.
- What is the purpose of the sealed hole on top of the tank? The sealed hole on top is a venting hole used during the manufacturing process and has no functional use for the end-user.
- How is the quality of the 37 gallon rv holding tank ensured? The tank is roto-molded from high-density polyethylene, creating a seamless construction with walls of equal thickness to ensure strength and durability.
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.