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If you're tired of inaccurate black water tank readings caused by waste buildup and toilet paper residue, the Horst Miracle Probe 500674 is your solution. This precision-engineered RV black tank sensor eliminates false readings and delivers reliable monitoring every time, giving you confidence in your holding tank levels on every trip.
Features & Specifications
- Shielded Brass Tips: Prevents waste buildup interference for accurate readings
- Teflon Insulators: Long-lasting durability and electrical isolation
- Universal Fit: Designed for standard 3/8" screw-in sensor holes
- Black Water Optimized: Specifically engineered for RV waste holding tanks
- 2.4375" Probe Length: Ideal depth for most RV black tank applications
- OEM-Grade Quality: Made by Horst Engineering (Elkhart Plastics) - trusted RV sanitation experts
- Easy DIY Installation: No tank removal or special tools required
Why Choose the Horst Miracle Probe for Black Water Tanks?
Standard factory tank sensors fail because they're exposed to waste, toilet paper, and residue that creates false electrical contact. The Horst Miracle Probe solves this with a revolutionary shielded design that keeps the brass sensing tip clean and accurate. You'll get real-time, precise black tank level monitoring without the guesswork. Whether you're a weekend warrior or full-time RVer, this black water tank sensor ensures you never overfill or misjudge your holding tank capacity again.
Compare RV Tank Sensors & Monitoring Solutions
Not sure which tank sensor or monitoring system is right for your RV? Compare the Horst Miracle Probe with other popular options to find the best fit for your black, gray, or fresh water tanks.
| Model | Tank Type | Quantity | Probe Length | Best For | View Details |
|---|---|---|---|---|---|
| Horst Miracle Probe 500674 | Black Water | 1 Probe | 2.4375" | Individual black tank sensor replacement | Current Product |
| Mini Probes 500674M | Fresh & Gray Water | 6 Pack | 1" | Bulk replacement for fresh/gray tanks | View Product |
| KIB Wall Panel Monitor | All Tanks | Monitor Only | N/A | Complete monitoring system for up to 3 tanks | View Product |
| Universal Holding Tank Kit | Black & Gray Water | 4 Sensors + Fittings | Varies | Complete DIY installation kit with couplers | View Product |
💡 Pro Tip: Most RV black tanks use 3-4 sensor probes to indicate empty, 1/3, 2/3, and full levels. Check how many sensor ports your tank has before ordering.
Technical Specifications
- Part Number: 500674
- SKU: 5019
- Manufacturer: Horst Engineering (Elkhart Plastics)
- Probe Length: 2.4375"
- Thread Diameter: 0.375" (3/8")
- Material: Brass tips with Teflon insulators
- Tank Compatibility: RV black water holding tanks
- Sensor Type: Resistance-based (OEM-style)
- Installation: Screw-in replacement for existing sensor holes
- Weight: 0.5 lbs
- Country of Origin: Canada (Quebec)
What's Included
- 1x Horst Miracle Probe for Black Water Tanks (500674)
- Manufacturer's quality guarantee
- Compatible with standard OEM resistance-based tank monitoring systems
Compatible Models & Alternatives
The Horst Miracle Probe 500674 is designed for RV black water tanks with standard 3/8" sensor ports. If you need sensors for fresh or gray water tanks, check out the Elkhart Mini Probes 500674M 6-Pack. For a complete holding tank upgrade, explore our Universal Holding Tank Fittings Kit with sensors and couplers.
Frequently Asked Questions
How do I install the Horst Miracle Probe in my RV black tank?
Installation is simple: locate the existing sensor on your black water tank, unscrew the old probe, and screw in the Horst Miracle Probe 500674. No tank removal, no special tools, and no plumbing modifications required. The 3/8" threaded design fits standard RV tank sensor ports.
Is this probe compatible with SeeLevel or ultrasonic tank monitors?
No, the Horst Miracle Probe 500674 is designed for standard OEM-style resistance-based tank monitoring systems. It is not compatible with ultrasonic sensors like SeeLevel or external monitoring systems.
What's the difference between black water probes and fresh/gray water probes?
Black water probes like the Horst Miracle Probe 500674 feature shielded brass tips specifically designed to resist waste buildup and toilet paper interference. Fresh and gray water probes (like the 500674M Mini Probes) are shorter and optimized for cleaner water applications.
How many Horst Miracle Probes do I need for one black tank?
Most RV black tanks use 3-4 sensor probes to indicate empty, 1/3 full, 2/3 full, and full levels. Check your tank's sensor port configuration to determine how many probes you need.
Can I use this probe in my gray water or fresh water tank?
While the Horst Miracle Probe 500674 will physically fit, it's specifically engineered for black water tanks. For fresh and gray water applications, we recommend the Elkhart Mini Probes 500674M which are optimized for those tank types.
Why are my RV tank sensors giving false readings?
False readings are typically caused by waste buildup, toilet paper, or residue creating electrical contact on exposed sensor tips. The Horst Miracle Probe's shielded design prevents this interference, ensuring accurate black tank level monitoring.
Why Buy from Elkhart RV Parts?
Elkhart RV Parts is the authorized distributor for Elkhart Plastics and Horst Engineering products. Every Horst Miracle Probe we sell is 100% authentic, OEM-grade quality backed by manufacturer warranties. We specialize in RV holding tank components, plumbing fittings, and sanitation systems with expert support and fast shipping. Our commitment to quality means you get the right part, the first time, with confidence.
🚀 Ready to eliminate false black tank readings? Add the Horst Miracle Probe 500674 to your cart now! Questions? Our AI Live Chat is here to help you find the perfect tank sensor solution.
| 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.
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