Professional Motor Start Capacitor 86-103 MFD (uF)
86-103 MFD (uF) 3/4 and 1 HP Well Pump Control Box Motor Start Capacitor Review – Reliable Replacement Made in the USA
If your well pump suddenly struggles to start, makes a humming noise, or trips the breaker, there’s a good chance the issue isn’t the entire pump system — it could simply be a worn-out start capacitor. This small but critical component plays a major role in getting your motor running properly. When it fails, everything else seems broken.
The 86-103 MFD (uF) 3/4 and 1 HP Well Pump Control Box Motor Start Capacitor is designed specifically for Franklin 3/4HP and 1HP control boxes and compatible systems. Made in the USA by Barker Microfarads (BMI), this capacitor provides a dependable replacement option when your original unit loses capacitance over time.
In this in-depth review, we’ll walk through exactly what this capacitor does, why it matters, who it’s for, and whether it’s the right solution for your well pump control box.
Quick Product Overview
The 86-103 MFD motor start capacitor is a replacement component designed for Franklin 3/4HP and 1HP control boxes, including models 2801074915, CRC 2824085015, Tuhorse TCB15M230, and compatible systems. It operates at 220VAC, 50/60Hz and replaces Franklin Part# 275464118.
It measures 3.35 inches in height and 2.15 inches in diameter, making it a direct-fit option for control boxes designed for this specification range.
Priced at $22.00, it offers a cost-effective alternative to replacing an entire control box or pump assembly.
Key Features Explained in Detail
High-Quality Capacitor Made in the USA by BMI
This capacitor is manufactured by Barker Microfarads (BMI) in the United States. That matters more than many people realize. With electrical components, consistency and manufacturing standards directly impact reliability.
A well-made capacitor ensures proper capacitance within the rated 86-103 MFD range, helping your motor start efficiently without unnecessary strain. Since start capacitors are considered consumable parts, choosing a high-quality replacement can make a noticeable difference in performance longevity.
Designed for Franklin 3/4HP and 1HP Control Boxes
This unit is built for compatibility with Franklin 3/4HP and 1HP control boxes, including models 2801074915, CRC 2824085015, and Tuhorse TCB15M230. It also works with other control boxes that use the same capacitor specification.
Instead of guessing or modifying parts, this capacitor matches the required microfarad range and voltage rating needed for these systems. That means you can restore your setup without trial-and-error installation.
86-103 MFD (uF) 220VAC 50/60Hz Rating
The 86-103 microfarad range is critical for proper motor starting torque. When capacitance drops below this range, motors can struggle to start, overheat, or draw excessive current.
This capacitor is rated at 220VAC and works with both 50Hz and 60Hz systems. Matching both the microfarad range and voltage rating is essential for safe and reliable operation.
Compatible Replacement for Franklin Part# 275464118
If you're replacing Franklin Part# 275464118, this capacitor is designed as a compatible replacement. It matches the necessary specifications to restore proper startup function.
Physical dimensions are 3.35 inches in height and 2.15 inches in diameter, helping ensure it fits properly inside compatible control boxes without modification.
Why Start Capacitors Matter
The start capacitor inside a motor control box is considered a consumable part. Over time, capacitors naturally lose capacitance due to age and usage. When the capacitance drops below the rated range, your motor may:
- Fail to start properly
- Make a humming sound without spinning
- Trip breakers
- Run inefficiently or overheat
Replacing a failing capacitor is often one of the simplest and most cost-effective repairs you can make to restore normal pump operation.
Benefits for Users
Cost-Effective Repair: At $22.00, replacing just the capacitor is far more affordable than replacing the entire control box or pump system.
Restores Motor Starting Power: When capacitance falls out of range, motors struggle. This replacement restores proper starting torque.
Direct Compatibility: Designed for specific Franklin and compatible control boxes, minimizing guesswork.
Made in the USA Quality: Manufactured by BMI, offering consistent build quality.
Compact Fit: Proper dimensions help ensure easy replacement inside compatible enclosures.
Who Should Buy This Product
- Homeowners with Franklin 3/4HP or 1HP well pump control boxes
- Anyone replacing Franklin Part# 275464118
- DIY homeowners comfortable working inside a control box
- Technicians needing a compatible replacement capacitor
- Those troubleshooting motor starting issues
Who Should Avoid This Product
- Anyone with pumps outside the 3/4HP or 1HP specification
- Those unsure about matching microfarad ratings
- Users needing a different voltage rating
- Anyone uncomfortable working with electrical components
Also note: electronic components are listed as non-returnable, so proper compatibility confirmation is important before purchasing.
Pros and Cons
Pros
- Made in the USA by BMI
- Correct 86-103 MFD range
- 220VAC 50/60Hz compatible
- Direct replacement for Franklin 275464118
- Affordable price
Cons
- No returns on electronic components
- Only fits compatible control boxes
- Requires basic electrical knowledge for installation
How to Replace the Capacitor
Before starting, disconnect power completely to the control box.
- Turn off the breaker supplying the well pump.
- Open the control box housing.
- Carefully discharge the old capacitor.
- Remove wiring from the old unit (note wire positions).
- Install the new 86-103 MFD capacitor in the same orientation.
- Reconnect wires securely.
- Close the control box and restore power.
If you're unsure about working with electrical components, consulting a professional technician is recommended.
Frequently Asked Questions (FAQ)
1. What happens when a start capacitor fails?
The motor may hum without starting, trip breakers, or struggle to run efficiently.
2. Is this compatible with Franklin Part# 275464118?
Yes, it is designed as a compatible replacement.
3. What is the microfarad rating?
It is rated between 86-103 MFD (uF).
4. What voltage is it rated for?
220VAC at 50/60Hz.
5. What are the dimensions?
3.35 inches tall and 2.15 inches in diameter.
6. Can I return it if it doesn’t fit?
Electronic components are listed as non-returnable, so confirm compatibility before purchase.
Final Verdict
The 86-103 MFD (uF) 3/4 and 1 HP Well Pump Control Box Motor Start Capacitor is a straightforward, purpose-built replacement for compatible Franklin control boxes. When your pump struggles to start, replacing the start capacitor is often the first and most cost-effective repair step.
With the correct capacitance range, proper voltage rating, compatible fit, and Made in USA manufacturing by BMI, this capacitor offers a practical solution at a very reasonable price point.
Check Price and Availability
If you've confirmed compatibility with your control box and need a reliable replacement, you can check the latest price here:
