---
product_id: 458967805
title: "[UL Listed] BlueStars 3 uF MFD ±5% 370-440VAC Volt CBB65 Oval Run Start Capacitor 50/60 Hz AC Electric Replacement Part - for Central Air-Conditioners Heat Pumps Condenser Fan Motors AC Compressors"
brand: "bluestars"
price: "¥3831"
currency: JPY
in_stock: true
reviews_count: 13
category: "Blue Stars"
url: https://www.desertcart.jp/products/458967805-ul-listed-bluestars-3-uf-mfd-5-370-440vac-volt
store_origin: JP
region: Japan
---

# 80 µF capacitance for powerful motor start 370-440V rated voltage for versatile AC compatibility UL & TÜV certified for premium safety & durability [UL Listed] BlueStars 3 uF MFD ±5% 370-440VAC Volt CBB65 Oval Run Start Capacitor 50/60 Hz AC Electric Replacement Part - for Central Air-Conditioners Heat Pumps Condenser Fan Motors AC Compressors

**Brand:** bluestars
**Price:** ¥3831
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your motors with confidence and style!

## Quick Answers

- **What is this?** [UL Listed] BlueStars 3 uF MFD ±5% 370-440VAC Volt CBB65 Oval Run Start Capacitor 50/60 Hz AC Electric Replacement Part - for Central Air-Conditioners Heat Pumps Condenser Fan Motors AC Compressors by bluestars
- **How much does it cost?** ¥3831 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/458967805-ul-listed-bluestars-3-uf-mfd-5-370-440vac-volt)

## Best For

- bluestars enthusiasts

## Why This Product

- Trusted bluestars brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Convenience:** No rewiring needed—clearly labeled terminals make installation effortless and error-free.
- • **Power Up with Precision:** 80 µF ±5% capacitance ensures consistent, efficient motor startup every time.
- • **Lifetime Protection Included:** Backed by 100% lifetime warranty, so you never worry about unexpected failures.
- • **Built to Last & Certified Safe:** Meets UL, CUL, CEL, and TÜV SÜD standards with anti-explosion pressure switch for peace of mind.
- • **Universal Voltage Compatibility:** Rated for 370-440V AC, perfect for a wide range of motors and appliances.

## Overview

This UL Certified 80 µF ±5% Round Run Capacitor operates at 370-440V and 50/60Hz, designed for AC motor run and fan start applications. Engineered to meet stringent US and Australian safety standards including UL, CUL, CEL, and TÜV SÜD, it features a robust anti-explosion pressure switch and universal compatibility with common household and industrial motors. Easy to install with labeled terminals and backed by a lifetime warranty, it’s the reliable upgrade your motor deserves.

## Description

Product description BlueStars AC Capacitors Step 1 Turn off the power and locate the capacitor Step 2 Discharge any stored electricity by shorting the terminals Step 3 Take a photo or note how the wires connect. Disconnect wires & install the new capacitor. Step 4 Reassemble and test

Review: Easy and fast repair - Capacitor is as described. Works great in my AC unit. For $20 vesus $150 or more that the HVAC company was going to charge. Just pull the power on the wall, remove the cover and then one screw and 3 wires is all it takes. Even people less handy can do this and save a bunch of money.
Review: Solid product and a good value - Capacitors are wear items that are best either proactively replaced before they go bad or, at the very least, you should keep a properly rated spare on hand for when the one in your current AC unit inevitably quits. Furthermore, replacing a capacitor is a job that is well within the average DIY’er with nothing but the most basic tools required. There are plenty of YouTube videos on how to do it and do so safely. That is, unless you want to pay an HVAC repair company $200/$300/$400 or more when your capacitor quits (and it will eventually) on the hottest day of the year. Yes, that is what they charge to replace a capacitor. This Blue Stars brand dual run capacitor arrived promptly and when tested with my Klein MM700 multimeter was almost spot on the label rating and well within the claimed 5% tolerance. Replaced an aging Dayton (Grainger) part number 2MEK3B of the same specifications (50 + 7.5 mfd) in a 20 year old Lennox central air unit (not the original capacitor). The dimensions of the Blue Stars capacitor (both diameter and height) matched the Dayton unit being replaced exactly and were consistent with the product listing. The capacitor being replaced was still working and tested OK so it will go on the shelf as a spare. The capacitor itself is clearly marked (C=common, FAN, and HERM (compressor)). Terminals feel solid as does the metal (aluminum) casing. Did not weigh it but felt as heavy (if not slightly more) than the capacitor it was replacing. The product labeling clearly shows China as the place of manufacture but claims it is UL (USA) and CE (Europe) certified (but I have no way to verify this). Product listing in desertcart states a 100% lifetime warranty. Can’t vouch for that either. When installed and tested, the AC unit fired right up with the new capacitor. Far less expensive than I could find locally (Southwest Ohio). Certainly inexpensive enough to either purchase to have a spare on hand or, like me, proactively swap out an aging part before a problem occurs so I could do it at my convenience and schedule. As noted above, replacing a capacitor is not rocket science and within the ability of anyone that can replace a household light switch. Just make sure you get a capacitor of the right microfarad (MFD) rating for your application and TURN OFF THE POWER before you even think about starting the project. This means either flipping the circuit breaker in the main panel for the AC unit off or using the exterior safety disconnect switch where the AC interconnects to the house power. Simply turning off the switch on the furnace or thermostat IS NOT ENOUGH. Also, a capacitor, even one that has failed, can hold a residual charge and, therefore, make sure you discharge the old unit. Again, there are many videos available on how to do this and do it safely. Do some homework if this is new to you as saving a few dollars is not worth a serious injury or electrocution. Can’t comment yet on durability or service life but will update if it fails prematurely. Otherwise, a good solid product and an excellent value. Five (blue) Stars. DISCLAIMER: I am a member of the desertcart Vine program. This means that I receive some products free of charge to use and review. I only request/accept items I will actually use. My reviews are based on this real-world usage – they are not mere regurgitations of the desertcart product description or insincere hype. I am not a shill and I do not consider the fact that an item was provided without charge as part of my ratings. I have given Vine products one star, five stars, and all points in between. I put serious effort into my reviews and they represent my honest opinion of the product. My hope it they will help someone make an informed, educated choice whether or not a product is right for them.

## Features

- WHAT YOU GET - 3uF mfd ±5% 370-440VAC Volt Oval Run Start Capacitor
- SPECIFICATIONS - Capacitance: 3uf; Rated voltage: 370-440V; Tolerance: +/-5%; Shape: Oval Run; Capacitor dimensions: 31.5mm x 51.5mm x 55mm; Operating temperature range: -25℃ to +70℃/ -13℉ to 158℉; No PCBs. Engineered for safety 10000 AFC anti explosion pressure switch
- REPLACEMENT FOR - Rheem Ruud Weatherking 43-25134-01, 43-20847-01, 43-20847-02, 43-19182-01, 43-19182-02, 43-100496-02, 800P305H37A and other Start Capacitors with this uF/Mfd & VAC Rating
- PREMIUM QUALITY - The replacement part is made from durable high-quality aluminum and well-tested by the manufacturer - Meets OEM standards - Ensures long-lasting and effective performance. This capacitor will provide your electric motors with an outstanding electrical characteristic of high capacitance stability over time and temperature, and very low internal power loss
- 100% LIFETIME PROTECTION: Enjoy reliable performance with our lifetime protection, ensuring that your product will always be covered for any defects or issues that may arise.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C3HJDGLC |
| Best Sellers Rank | #1,583 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Industrial Electrical Capacitors |
| Brand | BlueStars |
| Brand Name | BlueStars |
| Capacitance | 3 Microfarad |
| Capacitance Tolerance | 5 |
| Customer Reviews | 4.6 out of 5 stars 2,220 Reviews |
| Included Components | 3 MFD 370-440 VAC CBB65 Capacitor |
| Item Shape | Oval |
| Manufacturer | BlueStars |
| Material | 3 MFD 370-440VAC |
| Material Type | 3 MFD 370-440VAC |
| Maximum Storage Temperature | 70 Degrees Celsius |
| Maximum Voltage | 440 Volts |
| Model | 370-440VAC |
| Mounting Type | Snap-In Mount |
| Operating Voltage | 440 Volts |
| Part Number | MA-1Y0F-LRPP |
| Shape | Oval |
| Upper Temperature Rating | 70 Degrees Celsius |
| Warranty Description | This warranty is limited to the original purchaser, and is not transferable to subsequent owners of the product. |

## Product Details

- **Capacitance:** 80 Microfarad
- **Brand:** BlueStars
- **Material:** Copper
- **Shape:** Round
- **Maximum Storage Temperature:** 70 Degrees Celsius

## Images

![[UL Listed] BlueStars 3 uF MFD ±5% 370-440VAC Volt CBB65 Oval Run Start Capacitor 50/60 Hz AC Electric Replacement Part - for Central Air-Conditioners Heat Pumps Condenser Fan Motors AC Compressors - Image 1](https://m.media-amazon.com/images/I/71bRbiWMMjL.jpg)
![[UL Listed] BlueStars 3 uF MFD ±5% 370-440VAC Volt CBB65 Oval Run Start Capacitor 50/60 Hz AC Electric Replacement Part - for Central Air-Conditioners Heat Pumps Condenser Fan Motors AC Compressors - Image 2](https://m.media-amazon.com/images/I/71F6vUHJISL.jpg)
![[UL Listed] BlueStars 3 uF MFD ±5% 370-440VAC Volt CBB65 Oval Run Start Capacitor 50/60 Hz AC Electric Replacement Part - for Central Air-Conditioners Heat Pumps Condenser Fan Motors AC Compressors - Image 3](https://m.media-amazon.com/images/I/71C4xkVcObL.jpg)
![[UL Listed] BlueStars 3 uF MFD ±5% 370-440VAC Volt CBB65 Oval Run Start Capacitor 50/60 Hz AC Electric Replacement Part - for Central Air-Conditioners Heat Pumps Condenser Fan Motors AC Compressors - Image 4](https://m.media-amazon.com/images/I/81TvNvfgunL.jpg)
![[UL Listed] BlueStars 3 uF MFD ±5% 370-440VAC Volt CBB65 Oval Run Start Capacitor 50/60 Hz AC Electric Replacement Part - for Central Air-Conditioners Heat Pumps Condenser Fan Motors AC Compressors - Image 5](https://m.media-amazon.com/images/I/81cABOTHylL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy and fast repair
*by L***R on April 26, 2026*

Capacitor is as described. Works great in my AC unit. For $20 vesus $150 or more that the HVAC company was going to charge. Just pull the power on the wall, remove the cover and then one screw and 3 wires is all it takes. Even people less handy can do this and save a bunch of money.

### ⭐⭐⭐⭐⭐ Solid product and a good value
*by D***. on April 13, 2024*

Capacitors are wear items that are best either proactively replaced before they go bad or, at the very least, you should keep a properly rated spare on hand for when the one in your current AC unit inevitably quits. Furthermore, replacing a capacitor is a job that is well within the average DIY’er with nothing but the most basic tools required. There are plenty of YouTube videos on how to do it and do so safely. That is, unless you want to pay an HVAC repair company $200/$300/$400 or more when your capacitor quits (and it will eventually) on the hottest day of the year. Yes, that is what they charge to replace a capacitor. This Blue Stars brand dual run capacitor arrived promptly and when tested with my Klein MM700 multimeter was almost spot on the label rating and well within the claimed 5% tolerance. Replaced an aging Dayton (Grainger) part number 2MEK3B of the same specifications (50 + 7.5 mfd) in a 20 year old Lennox central air unit (not the original capacitor). The dimensions of the Blue Stars capacitor (both diameter and height) matched the Dayton unit being replaced exactly and were consistent with the product listing. The capacitor being replaced was still working and tested OK so it will go on the shelf as a spare. The capacitor itself is clearly marked (C=common, FAN, and HERM (compressor)). Terminals feel solid as does the metal (aluminum) casing. Did not weigh it but felt as heavy (if not slightly more) than the capacitor it was replacing. The product labeling clearly shows China as the place of manufacture but claims it is UL (USA) and CE (Europe) certified (but I have no way to verify this). Product listing in Amazon states a 100% lifetime warranty. Can’t vouch for that either. When installed and tested, the AC unit fired right up with the new capacitor. Far less expensive than I could find locally (Southwest Ohio). Certainly inexpensive enough to either purchase to have a spare on hand or, like me, proactively swap out an aging part before a problem occurs so I could do it at my convenience and schedule. As noted above, replacing a capacitor is not rocket science and within the ability of anyone that can replace a household light switch. Just make sure you get a capacitor of the right microfarad (MFD) rating for your application and TURN OFF THE POWER before you even think about starting the project. This means either flipping the circuit breaker in the main panel for the AC unit off or using the exterior safety disconnect switch where the AC interconnects to the house power. Simply turning off the switch on the furnace or thermostat IS NOT ENOUGH. Also, a capacitor, even one that has failed, can hold a residual charge and, therefore, make sure you discharge the old unit. Again, there are many videos available on how to do this and do it safely. Do some homework if this is new to you as saving a few dollars is not worth a serious injury or electrocution. Can’t comment yet on durability or service life but will update if it fails prematurely. Otherwise, a good solid product and an excellent value. Five (blue) Stars. DISCLAIMER: I am a member of the Amazon Vine program. This means that I receive some products free of charge to use and review. I only request/accept items I will actually use. My reviews are based on this real-world usage – they are not mere regurgitations of the Amazon product description or insincere hype. I am not a shill and I do not consider the fact that an item was provided without charge as part of my ratings. I have given Vine products one star, five stars, and all points in between. I put serious effort into my reviews and they represent my honest opinion of the product. My hope it they will help someone make an informed, educated choice whether or not a product is right for them.

### ⭐⭐⭐⭐⭐ Easy install, fixed the heater right away
*by R***L on January 29, 2026*

Installed this BlueStars 7.5 µF capacitor as a replacement and it was super easy to install. The fit was correct and everything hooked up without any issues. Once installed, the heater started working great immediately. No humming, no delays it did exactly what it was supposed to do. Solid replacement part and saved me from a more expensive repair. Would definitely buy again.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-05-10*