![[UL Certified] BlueStars 50+5 MFD 50/5 uF 370 or 440 Volt VAC Dual Run Start Round AC Capacitor Replacement Part - Fit for Condenser Straight Cool Heat Pump Air Conditioner, Replaces 97F9850 97F9970](https://m.media-amazon.com/images/I/61UkBLrmzTL._AC_SL3840_.jpg)






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⚡ Power your cool with confidence — the capacitor that keeps your system running smooth and safe!
The BlueStars 50+5 MFD dual run start AC capacitor is a UL-certified, high-performance replacement part designed for condenser, straight cool, and heat pump air conditioners. Rated for 370-440 volts and engineered to meet stringent US and Australian safety standards, it offers reliable operation within a wide temperature range (-25℃ to +70℃). Compatible with numerous OEM models, it delivers enhanced motor efficiency and comes with lifetime protection for lasting peace of mind.













| ASIN | B094C7PZLJ |
| Best Sellers Rank | #1,171 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Industrial Electrical Capacitors |
| Brand | BlueStars |
| Brand Name | BlueStars |
| Capacitance | 50 microfarad |
| Capacitance Tolerance | 5 |
| Customer Reviews | 4.2 out of 5 stars 82 Reviews |
| Included Components | capacitor |
| Item Shape | Round |
| Manufacturer | BlueStars |
| Material | 50+5 MFD 370-440VAC |
| Material Type | 50+5 MFD 370-440VAC |
| Maximum Storage Temperature | 70 °C |
| Maximum Voltage | 440 volts |
| Model | 50+5 MFD uf |
| Mounting Type | Panel Mount |
| Number of Items | 1 |
| Operating Voltage | 440 volts |
| Part Number | 50+5 MFD uf |
| Shape | Round |
| Upper Temperature Rating | 70 °C |
M**.
Works great!
Worked as expected. Good value for great product.
J**.
Capacitor
worked great!!!
D**N
Larger than described.
Ordered the 370 and got the larger one. It will work functionally but the size is larger so I had to go shopping for a different clamp.
A**H
Thumbs up👍🏾
The part worked as it should. I was pleased with the shipping time and cost.
T**Y
Brought my air conditioner back to life.
Great little capacitor.
C**G
Dead
Was dead out of the box
K**E
Will buy again
Works great for my air conditioner condenser unit.
J**L
Almost lasted 2 years.
I bought this product 1 year 10 months ago. I am DIY youtuber. I'll only troubleshoot as much as I feel comfortable according to the youtube videos. When troubleshooting, I saw that the capacitor was the issue because the fan or ac would sound like it tried to start but never did. I took a chance and bought this item and replaced it and lo and behold. It worked. This past week, the fan started but youtube told me that it could still be the capacitor if the ac doesn't make a humming sound. I took a chance and went to the local hardware store and lo and behold. It was the capacitor. I'll see how well this one that I bought "Titan Pro" and see how long it lasts. As far as this Bluestar product, I won't buy it again. It gets a 3 stars because at least it help me determine it is an AC Capacitor problem.
H**D
Perfect replacement, got my AC running instantly!
Great capacitor! My central AC fan had stopped working, but dropping this 50+5 MFD BlueStars unit in fixed the problem immediately. It is UL Certified, fits the standard round mounting bracket perfectly, and works for 370V/440V setups. If your AC compressor or fan motor is struggling to start, this is a quick, high-quality, and affordable fix.
B**A
Excellent
Ca a régler mon problème
P**M
Easy and inexpensive
Perfect and inexpensive fix for a failed capacitor. 2 months in and going strong.
J**L
Great fit
Good quality
J**T
Price
This part was bought for an RV (same part as for a regular house t-pump) and it worked perfectly. And the price, excellent.
Trustpilot
3 days ago
2 months ago