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This tank is no longer in production. See recommended alternatives below with similar low-profile dimensions and capacity.
The Elkhart Plastics 25 Gallon RV Holding Tank EPI 1138 featured a low-profile 8" height with a 53" x 20" footprint, making it ideal for shallow underbelly spaces and slide-out installations. While this specific model has been obsoleted, we offer several current alternatives with similar low-profile dimensions and professional-grade construction.
Original Features & Specifications
- 25 Gallon Capacity - Mid-size waste storage for small to medium RVs
- Low-Profile Design: 53" L x 20" W x 8" H - Perfect for shallow underbelly compartments
- Black Polyethylene Construction - Durable material resistant to UV damage and chemicals
- Seamless One-Piece Construction - Rotomolded design eliminated weak joints and leak points
- Dual Application: Suitable for black water or gray water storage
Recommended Alternatives to EPI 1138
Looking for a low-profile holding tank to replace the obsolete EPI 1138? Compare these alternatives with similar capacity and low-profile designs.
| Model | Capacity | Dimensions | Best For | View Details |
|---|---|---|---|---|
| Elkhart EPI 1138 (Obsolete) | 25 Gallons | 53" x 20" x 8" | Low-profile design (no longer available) | Obsolete |
| Elkhart EPI 4464 (Discontinued) | 24 Gallons | 38" x 14.5" x 11.75" | Similar capacity, narrower width, taller profile | View Tank → |
| Elkhart EPI 4212 | 26 Gallons | 85" x 18" x 7.375" | Similar capacity, extra-long length, lower profile | View Tank → |
| Elkhart H1129000 | 29 Gallons | 60" x 28" x 6.125" | Similar length, wider footprint, ultra-low profile | View Tank → |
Recommended Alternative: The Elkhart H1129000 (29 gallon, 60" x 28" x 6.125") offers the closest match with similar length and even lower 6.125" height profile, plus 4 additional gallons of capacity.
Original Technical Specifications (EPI 1138)
- Capacity: 25 Gallons (94.6 Liters)
- Length: 53 inches
- Width: 20 inches
- Height: 8 inches (low-profile)
- Material: Black polyethylene (UV and chemical resistant)
- Construction: Seamless one-piece rotational molding
- Application: Black water or gray water holding tank
- Part Number: EPI 1138
- Vendor: Elkhart Plastics/Ameri-Kart (Myers supplier)
- Status: Obsolete - discontinued February 11, 2022
Why Was the EPI 1138 Obsoleted?
The EPI 1138's specific 53" x 20" x 8" dimensions served a niche in the RV market for low-profile applications. Elkhart Plastics has consolidated their product line to focus on more versatile tank configurations. The current alternatives listed above offer similar low-profile designs with comparable or greater capacity and the same professional-grade construction quality.
Finding the Right Replacement Tank
When selecting a replacement for the obsolete EPI 1138, measure your available space carefully and prioritize your most critical dimension:
- Need similar 25-26 gallon capacity? The EPI 4212 (26 gallon) or EPI 4464 (24 gallon) offer comparable storage
- Need low-profile under 8"? The H1129000 at 6.125" height offers an even lower profile than the EPI 1138
- Need similar 53-60" length? Both the H1129000 (60" length) and EPI 1138 (53" length) offer similar long chassis configurations
- Have more vertical clearance? Browse our holding tanks collection for additional options
Browse Current Low-Profile Holding Tanks
Explore our complete selection of RV holding tanks to find the perfect replacement for your obsolete EPI 1138. All current tanks feature durable construction, seamless rotomolded design, and manufacturer warranties. Browse all Elkhart Plastics products or check our tank fittings collection for installation accessories.
Frequently Asked Questions
Can I still order the EPI 1138?
No, the EPI 1138 was obsoleted in February 2022 and is no longer in production. We recommend the H1129000 (29 gallon, 60" x 28" x 6.125") as a current alternative with similar dimensions and greater capacity.
What's the best replacement for the EPI 1138?
The Elkhart H1129000 offers the closest match with similar 60" length (vs 53"), wider 28" width (vs 20"), and even lower 6.125" height (vs 8"). It has 4 additional gallons of capacity (29 vs 25 gallons).
Will the replacement tanks fit in the same space?
The H1129000 (60" x 28" x 6.125") is slightly longer and wider than the EPI 1138 (53" x 20" x 8"), but it's lower in height. Verify your available clearance, especially width, before ordering.
Are the replacement tanks the same quality?
Yes, all current Elkhart Plastics tanks use professional-grade black polyethylene, seamless rotomolded construction, and heavy-duty wall thickness. You're getting the same OEM-grade quality in current production models.
Do I need different fittings for the replacement tank?
Replacement tanks are blank tanks without pre-installed fittings, just like the EPI 1138. You can reuse your existing fittings or purchase new ones from our tank fittings collection.
Why Buy from Elkhart RV Parts?
As an authorized Elkhart Plastics dealer, we guarantee 100% authentic OEM-grade parts backed by manufacturer warranties. Our team specializes in RV plumbing components and can help you select the right replacement tank for your obsolete EPI 1138. Every tank we sell is built to rigorous quality standards that ensure safe, reliable performance for years to come.
Need Help Finding the Right Replacement?
Our AI Live Chat can help you find the perfect alternative to the obsolete EPI 1138 based on your specific space constraints and capacity requirements. Get instant answers about dimensions, compatibility, and installation.
| Width (inches) | 20 |
|---|---|
| Height (inches) | 8 |
| Length (inches) | 53 |
| Capacity (gallons) | 25 |
- What are the dimensions of the 25 gallon rv holding tank? The tank measures 53 inches in length, 20 inches in width, and 8 inches in height.
- Is there a minimum order requirement for this holding tank? Yes, there is a minimum order requirement of 10 tanks.
- How long is the production timeframe for this custom holding tank? The estimated production timeframe is between 4 to 12 weeks.
- Can i return or get a refund for this holding tank? No, due to this being a custom order, there are no returns or refunds.
- Is this 25 gallon rv holding tank currently available or discontinued? This item is discontinued as of 2/11/22 and only available on special order.
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.