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Stop Guessing – Know Your RV Black Tank Levels with Precision
The Horst Miracle Probe is the ultimate solution for RV owners tired of inaccurate black water tank readings. Designed to replace standard tank sensors, this probe ensures precise, reliable monitoring of your RV’s black holding tank – even in the messiest conditions.
- ✅ Eliminates false readings caused by toilet paper, waste buildup, and residue
- ✅ Easy to install in existing sensor holes – no tank removal required
- ✅ Made by Horst Engineering – trusted name in RV maintenance and sanitation
- ✅ Designed for black water tanks – specifically engineered to resist buildup
- ✅ Durable brass tips and Teflon insulators for long-lasting performance
Why Choose the Horst Miracle Probe?
Standard tank sensors often fail due to buildup inside your RV’s black water tank. The Horst Miracle Probe’s innovative design features shielded tips that prevent waste from interfering with sensor readings. That means you get accurate, real-time tank levels – every trip, every time.
Easy Installation & Universal Fit
Each probe fits into the existing holes of your RV’s black tank. Simply unscrew the old sensor and screw in the Horst Miracle Probe – no special tools or plumbing skills required.
Perfect For:
- RV owners tired of guessing tank levels
- DIY RV repairs and upgrades
- RV black tank troubleshooting
- Fleet maintenance professionals
SKU: 500674 | Compatibility: Most RV black water holding tanks
💡 Pro Tip: Install a full set of Horst Probes in your fresh, gray, and black tanks for complete monitoring accuracy!
🧠 Frequently Asked Questions
Q: Will this probe fit my RV’s black tank?
A: Yes! The Horst Miracle Probe is designed to be a universal fit for most RV black water tanks using standard 3/8" screw-in sensors.
Q: Can I install it myself, or do I need a technician?
A: This is a simple DIY installation. Just remove your old sensor and screw the Horst probe in its place. No plumbing, no tank removal.
Q: How many probes do I need for one tank?
A: Typically, you’ll need three to four probes per tank – one each for empty, 1/3, 2/3, and full levels. Check how many ports your tank has.
Q: Can I use this in gray or fresh water tanks?
A: No – this version is specifically designed for black tanks. Horst also makes probes for gray and fresh water tanks – check our store!
Q: How does this improve accuracy over factory sensors?
A: Factory sensors are exposed and easily fouled by buildup. The Horst Miracle Probe uses a shielded brass tip to prevent false readings and maintain clean electrical contact.
Q: Is this probe compatible with SeeLevel or other digital monitors?
A: No. The Horst Miracle Probe is designed to work with standard OEM-style resistance-based tank monitoring systems, not ultrasonic or external sensors.
| Length (inches) | 2.4375 |
|---|---|
| Diameter (inches) | 0.375 |
| Fits hole diameter (inches) | 0.375 |
- What tanks can the horst miracle probe be used for? The Horst Miracle Probe can be used for black water, fresh water, and gray water tanks.
- What are the dimensions of the horst miracle probe? The probe is 3/8 inch in diameter and 2-7/16 inches long.
- Does the horst miracle probe fit existing tank probe holes? Yes, it fits in the 3/8 inch diameter holes of your existing probes.
- Are filters available for the horst miracle probe? Yes, filters can be ordered separately for the probes. They are part #311 and sold in packs of 4.
- Is the horst miracle probe sold individually or in packs? The Horst Miracle Probe is sold individually, one probe per 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.