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SKU:
ZZ3F07322
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12V Regulator Alternator 41-8851 Fit Thermo King McTRL-I 30, 50 & 30 TC MP300
$79.19
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$79.19
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$79.19
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
12V Regulator Alternator for Thermo King
This 12V regulator alternator, with OEM cross-reference number 41-8851, delivers consistent charging output for Thermo King refrigeration units. It is designed to maintain battery health and reliable electrical system performance in demanding transport cooling applications. This 12V regulator alternator for Thermo King ensures dependable power delivery to keep your unit running.
Overview
This 12V regulator alternator for Thermo King is a direct replacement component that regulates voltage and charges the battery in compatible refrigeration systems. It is built for Thermo King units that require a steady 12-volt electrical supply, ensuring reliable starts and continuous operation. The 41-8851 design makes it a practical choice for maintaining fleet readiness and minimizing downtime.
Built For Performance
- Delivers regulated 12V output for consistent charging
- Cross-references OEM part number 41-8851 for straightforward replacement
- Constructed with durable materials to withstand vibration and temperature extremes
- Designed to match original mounting and electrical connections
- Provides stable voltage to protect sensitive electronic components
Fits These Machines
- for Thermo King MD-II
- for Thermo King MD-II SR
- for Thermo King MD-300
- for Thermo King MD-500
On-The-Job Use
- Maintains electrical system integrity in over-the-road refrigerated trailers
- Supports daily start-up and extended runtime in temperature-controlled fleets
- Used in applications where consistent alternator output is critical to cargo preservation
Specs At A Glance
| Type | Regulator Alternator |
| Voltage | 12V |
| Part Number(s) | 41-8851 |
Good To Know
Q: What does the 41-8851 alternator do in a Thermo King unit? A: It generates and regulates electrical power to charge the battery and run essential systems, ensuring the refrigeration unit operates reliably. Proper voltage regulation prevents electrical damage and supports consistent performance.
Q: How do I know if this alternator fits my specific Thermo King model? A: Fit depends on the exact unit model and serial number, so verify compatibility with your unit's specifications before ordering. Always check mounting points and electrical connections against your existing alternator.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.