Massimo UTV MSU 800-5 5-Pin Regulator Rectifier MSU800 21051100201
SKU: 22616883944

Massimo UTV MSU 800-5 5-Pin Regulator Rectifier MSU800 21051100201

Sale price$60.99 Regular price$67.77
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Description

Massimo UTV MSU 800-5 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: 22616883944

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Owen Shirk
San Leandro, US
★★★★★ 5
OEM is always the answer
No reason not to go OEM for this! Came with every possible gasket and seal I could need. Specifically for my Alpha One Gen 1 it took maybe 25-30 min to completely install. While you’re there check the base plate for wear and the other surrounding items like your water tube. Rather keep the lower unit off for an extra day to get another part than a catastrophic failure.
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Reviewed in the United States on September 9, 2025
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Taylor 🤍
Alexandria, US
★★★★★ 5
Husbands things
My husband bought this. I don’t know much about it but he has zero complaints. He bought it for a boat. He has fixed up 2 boats, sold one & we kept the other. So he apparently knows what to buy & how to use it.
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Reviewed in the United States on November 6, 2025
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Edward W.
Pawtucket, US
★★★★★ 4
Amazon is easy and fast . No problems the oarts was exactly as described.
liked that everything was in one bag . and could make sure everything was changed .
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Reviewed in the United States on August 3, 2020
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Justin Yeager
Carnegie, US
★★★★★ 5
Stay cool
Just what I needed, super fast shipping
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Reviewed in the United States on October 19, 2025
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Crimson
Los Angeles, US
★★★★★ 5
Outboard is Cooling
The repair kit arrived on time as scheduled. The kit contained everything needed to replace the Mercury 175 OptiMax impeller. The engine is cooling now and we are back on the water without issue. Easy replacement.
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Reviewed in the United States on July 5, 2023

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