SKU: 77036571921

Massimo UTV MSU 800 5-Pin Regulator Rectifier MSU800 21051100201

$60.99 $67.77
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Description

Massimo UTV MSU 800 5-Pin Regulator Rectifier MSU800 210511002015 Wire Voltage Regulator Rectifier Fit for ODES UTV 650 850 1000 Dominator X2 X4 Features: Direct replacement to your original unit. Perfect fit and ready to install. Always use a sealant to mount the cable gland joint. All products shipped are tested. Instruction is NOT included. Attention: This regulator is not suitable for lithium ion batteries! The battery or other electric parts can be damaged! Specifications: Condition: Aftermarket 100% Brand

5-Wire Voltage Regulator Rectifier Fit for ODES UTV 650 850 1000 Dominator X2 X4

Features:
Direct replacement to your original unit.
Perfect fit and ready to install.
Always use a sealant to mount the cable gland joint.
All products shipped are tested.
Instruction is NOT included.

Attention:
This regulator is not suitable for lithium-ion batteries! The battery or other electric parts can be damaged!

Specifications:
Condition: Aftermarket 100% Brand New
Quanity: 1 PC
Type: Regulator / Rectifier

Other specifications:
Number of plugs: 2
Number of pins: 3 + 2

Please compare the number of pins and plugs with the old part before purchasing.

Replacement Part Number:
21051100201
21051100202
21051100203

Fits Make/Model:
Fit for Massimo UTV MSU 800
Fit for Massimo UTV MSU 800-5
Fit for Massimo UTV MXU 1000
Fit for Massimo UTV WARRIOR 800
Fit for Massimo UTV WARRIOR 1000
Fit for Massimo UTV X2-800 LT
Fit for Massimo UTV X2-1000
Fit for Massimo UTV X4-1000 LT
Fit for Massimo UTV XF-3
Fit for ODES UTV 650
Fit for ODES UTV 800
Fit for ODES UTV 1000
Fit for ODES Dominator X2 LT
Fit for ODES Dominator X4 LT
Fit for ODES Dominator X2 800
Fit for ODES Dominator X4 800
Fit for ODES Dominator X2 1000
Fit for ODES Dominator X4 1000
Fit for ODES Dominator X4 LT 800
Fit for ODES Dominator X4 LT 1000
Fit for ODES Junglecross 800ST-2
Fit for AODES DesertCross 1000-3
Fit for AODES Desertcross 1000-6 HVAC 2023
Fit for AODES Pathcross 800
Fit for AODES Pathcross 1000

(Compatibility Chart is for reference ONLY!!!)
(Please Compare with Your faulty unit and the image we provided to Decide Fitment)

Package includes:
1x 5-Pin Regulator Rectifier

Note:
Signs that your regulator needs replacing:
Depending on the location of the regulator rectifier, the part can easily overheat. Other causes for a dead regulator rectifier center on the battery. Ground connections are important for good voltage, and if there is a faulty voltage, the regulator rectifier can run hot. Bad grounding, corroded battery connection and poor or loose battery connections will cause faulty voltage too.

There are generally two ways for the regulator rectifier to fail:
The first deals with diode burnout, resulting in battery drain. It is easy to assume that the issue is a bad battery because of symptoms such as dimming headlights and poor starts. Checking the voltage with a voltmeter versus relying on symptoms alone will prove highly beneficial. If the voltage drops below 13 volts, the motorcycle will begin to drain the battery and eventually the engine will stop. Check for bad connections and corrosion; these can also cause voltage issues.
The other failure type is shunt regulator burnout, where the regulator rectifier fails to control the voltage, resulting in battery overcharge. Again, a voltmeter will be useful for diagnosis. Though generally, readings above 17 volts mean the regulator rectifier is not converting the excess power correctly and all of that excess voltage may cause the headlights to become extremely bright and then blow.

The product on offer is an accessory or spare part and thus is not an original product of the vehicle manufacturer.
The name of the vehicle manufacturer is stated only as an indication of the determination of the product being offered as an accessory or spare part, to clarify, for which vehicle the product on offer fits.

Warranty:
Returns: Customers have the right to apply for a return within 60 days after the receipt of the product
24-Hour Expert Online: Solve your installation and product problems

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 77036571921

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4.4 ★★★★★
Based on 22 reviews
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Product Reviews
J
Verified Purchase
Johnny P
Pawtucket, US
★★★★★ 2
Stops working after it heats up
Style: Receiver
This unit can’t stay running for any period longer than 5 hours. The components start to heat up and the sound goes out completely. The audio will only return after the unit has been turned off and cooled. A complete waste of money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 5, 2025
Z
Verified Purchase
ZK
Dallas, US
★★★★★ 5
Most dynamic and engaging sound
1/15/24: I should mention that I connected my old Yamaha rx 1070 and no HDMI or HDCP issues. The A8A started giving HDCP 2.2 errors. No video on TV. Have to restart receiver to get compatibility. This happened after a recent firmware update. Very unfortunate since it's an awesome receiver. Update 12/27: so I've had this receiver for just over a month and I can say with confidence that I'm thoroughly enjoying it. I have disconnected to Arundel 1723 speakers and the sound is just outstanding. I leave the surround AI on all the time and I've compared the sound with it on and off and the difference is perceptible. The surround AI makes dialogue more intelligible and creates a wide sound field. The best part again are the scenes which you can configure to your heart's content. I will point to the fact that initially I did the YPAO angle measurement incorrectly. There are two parts to the stand the tripod(propeller type)and a stand that fits onto it. The fourth position is high up on the stand after it is fixed to the propeller stand. Use a tripod stand to achieve great results. If you have Dolby Atmos and/ or front presence and rear presence speakers turn off the speaker virtualization and this will give you better sound. Also when doing the calibration choose your measurement points at least two to three feet apart. To give you some context I have tested the Onkyo RZ70, Sony 7000ES ,marantz Cinema 50 and Denon X4800. The Yamaha a8a outshines all these receivers. It is a blast to watch movies. The sound is very punchy especially in the mid bass and the lower bass is literally room shaking. The surround AI feature is awesome and I would advise that you use it. I was initially skeptic about this but it creates a sense of immersion as if you are right in the movie. The dialogue is crystal clear and very easily intelligible. I would strongly recommend using AI or at least giving it a try. The remote is backlit which is great. One of the most powerful features of this receiver is scenes. With this, you can assign various functions to one button on the remote. The only downside I see is the on-screen display which takes up the whole screen. It should be a banner at the bottom. The other issue I have is in the music cost app where on the input screen the whole real estate is taken up by a symbol that you can choose. I would have preferred instead some more useful information like the number of speakers being used. This is one of the best receivers I've ever heard. You will not be disappointed if you buy this.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 19, 2023
T
Verified Purchase
This bag pack rocks
Birmingham, US
★★★★★ 5
Premium sound quality
Wao. This is amazing I am extremely satisfied with the Yamaha A8A. It delivers excellent sound quality and offers a premium Hi-Fi listening experience. I previously used a Denon 13.2 receiver, and the Yamaha not only measures up but surpasses it in many ways. The sound is outstanding, and I am very impressed with its performance. Overall, I highly recommend the Yamaha A8A for anyone seeking a high-quality audio receiver.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 25, 2025
H
Verified Purchase
Hollanday
Cuba, US
★★★★★ 5
Quality and reliability included
Powerful upgrade to my modest home theater I had an a4a and wanted to upgrade to 5.2.4 Having the ability to adjust subs independently is the biggest difference I noticed immediately and made a huge impact in balancing my sound Paired with a emotiva basx A3 to take the pressure of my front stage I couldn’t be happier with how dynamic this setup is I tried a Denon 6700 and didn’t like it. The Yamaha has a backlit remote that lights up just by picking it up and pass through works great so with the unit off I can use anything attached to it with headphones or tv speakers without having to wake the family
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
J
Verified Purchase
Jason W.
Natrona Heights, US
★★★★★ 1
Unreliable and may have NO WARRANTY
Unit has failed. It won't power up. Blinking red light. Called Yamaha and they are verifying the 3prd party through Amazon is a authorized dealer prior to authorizing repair. Less than 2 years old. Home page on Amazon sales screen advertises it comes with a 5 year warranty with registration. How would I know if or if not Amazons vender is a authorized dealer? I'm going to be you know what if they come back and say NO WARRANTY. I will update as the process moves along.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 27, 2025

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