








⚡ Power your AC like a pro — reliable, robust, ready to roll!
The BOJACK 45+5uF Dual Run Circular Start Capacitor is a high-performance, industrial-grade capacitor designed for AC motors, fans, and compressors. Featuring a durable metallized polypropylene film dielectric, it operates safely within a wide temperature range (-40℃ to +70℃) and supports 370V AC at 50/60Hz. Its compact metal shell and three labeled terminals simplify installation and replacement, making it a trusted upgrade for central air conditioners, heat pumps, and condenser fan motors.
| ASIN | B08JYCVL56 |
| Best Sellers Rank | #19,793 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #54 in Industrial Electrical Capacitors |
| Capacitance Tolerance | 6 |
| Date First Available | September 24, 2020 |
| Item Weight | 7.4 ounces |
| Item model number | BJ-CAP370-455 |
| Manufacturer | BOJACK |
| Maximum Voltage | 370 Volts |
| Mounting Type | Through-Hole Mount |
| Product Dimensions | 1.97"W x 3.74"H |
| UPC | 759838090249 |
| Upper Temperature Rating | 70 Degrees Celsius |
C**W
Easy to install instead of paying OOP to a professional
Fits perfectly with my Rheem AC units. Replacing the old one was just as easy as cutting off the breaker, pulling the disconnect, taking the electrical panel off and swapping the wires. It works exactly as expected and doesn't make a sound. Solid build and reliable performance for my AC motor so far. Great value for anyone needing a replacement or upgrade capacitor.
A**R
A/C capacitor
Worked as designed, saved me lots of $$$$, got my a/c blowing cold again
A**R
Works great
Works well.. it saved and time and money.
S**2
Saved me over $100 in service fees! Definitely worth checking the capacitor
My HVAC suddenly stopped working. The fan wouldn’t turn on, and the AC wasn’t blowing cold air. I called an HVAC service, and they said they’d have to come check the unit, with a $95 dispatch fee plus additional charges for parts and labor. Before scheduling, I checked YouTube for possible fixes and found several videos recommending to check the capacitor. Sure enough, that was the issue! I ordered a BOJACK 45+5uF 45/5MFD ±6% 370V CBB65 Dual Run Circular Start Capacitor from Amazon for under $20, replaced it myself, and the AC started working like new again. It is easy to install and took only less than 15 minutes. I’m really glad I tried this first and it saved me over $100 in service fees! Definitely worth checking the capacitor if your HVAC suddenly stops blowing cold air.
B**N
Helped correct outside unit problem quickly and easily
This fixed a problem with the outside unit not running when the rest of the air conditioning system was trying to cool the house. Verified power was getting to the unit and the relay was working, but neither the fan nor the compressor started. The old unit also had oil leaking from it, which suggested it may be the problem. Replacing the capacitor fixed the problem. Next day delivery helped to get the AC repaired quickly in the summer heat. This unit was slightly smaller diameter than the one it replaced, but a little tape around the perimeter helped to snug it in the mounting bracket. Be careful. Turning off the AC does not cut power to the outside unit and it runs on 220VAC. To minimize the chance of electrocution while working on the outside unit, the breaker for the outside unit must be turned-off or the power cut-off at the outside junction box. The old capacitor might hold a residual charge as well. If you are not sure what you are doing, find someone that is.
J**N
Fixed my A/C issue fast
Easy to install and worked perfectly to get my air conditioning running again. Great value and arrived quickly. Lifesaver during the heat wave.
A**R
Quick fix for condenser fan on AC unit
This was a perfect replacement for use on our older Rheem AC. Dimensions and ratings were a direct match.
D**N
Came burning hot in mail but works just fine.
The product was sitting in my mailbox in 100-degree weather for so long that it was so hot that I worried it had been damaged by the heat. I checked using a multimeter, and one of the leads showed no resistance, so I thought the capacity was damaged by the heat. Nonetheless, the AC fans and compressors came back to life after I replaced the damaged one. Therefore, I believe that my method of testing a capacitor, which is a popular and simple approach, may not be entirely reliable. This is a good capacitor; go ahead and buy it.
H**B
Saved me a lot of money works great
A**Y
Worked flawlessly for me. My AC compressor fan stopped working. ChatGPT recommended new capacitor. I found this one. It is the same diameter as my old one and one inch shorter, which made a replacement super easy. It's been working for a week now.
A**.
Works perfectly - great price - perfect. Product has been working great now for 2 years.
E**1
So far working great. Only been 3 weeks. OEM lasted 16 years. If this lasts half as long it should get me to AC replacement time.
A**R
It works great so far
Trustpilot
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