International LM121 Voltage Regulators

Your International LM121 will be happy to know that the search for the right Voltage Regulators you’ve been looking for is over! Advance Auto Parts has 2 different Voltage Regulators for your vehicle, ready for shipping or in-store pick up. The best part is, our International LM121 Voltage Regulators start from as little as $50.99.

When it comes to your International LM121, you want parts and products from only trusted brands. Here at Advance Auto Parts, we work with only top reliable Voltage Regulators brands so you can shop with complete confidence. Some of our top Voltage Regulators brands are Carquest Premium. We’re sure you will get the right product to keep that LM121 running for a long time.

Shop online, find the best price on the right product, and have it shipped right to your door. If you prefer to shop in person for the right Voltage Regulators for your LM121, visit one of our local Advance Auto Parts locations and you’ll be back on the road in no time!

Compare 11 International Voltage Regulators

Carquest – Voltage Regulator (Part No.R281)

Voltage Regulator

from

$61.99
Product Features:
  • Our Throttle Position Sensors maintain specific installed outputs to match OE rather than adjustable consolidated designs
  • Circuits are printed on flexible polyimide film or ceramic-based substrates for excellent dimensional stability preventing electrical performance drift. Noble palladium/gold/platinum alloys provide low contact resistance for extended service life
  • Each TPS uses integral rotor bearings and return springs for easy installation
  • Each sensor undergoes rigorous end-of-line testing with thousands of data points to validate output voltages for optimum performance and trouble-free operation
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Carquest – Voltage Regulator (Part No.R291)

Voltage Regulator

from

$28.99
Product Features:
  • Our Throttle Position Sensors maintain specific installed outputs to match OE rather than adjustable consolidated designs
  • Circuits are printed on flexible polyimide film or ceramic-based substrates for excellent dimensional stability preventing electrical performance drift. Noble palladium/gold/platinum alloys provide low contact resistance for extended service life
  • Each TPS uses integral rotor bearings and return springs for easy installation
  • Each sensor undergoes rigorous end-of-line testing with thousands of data points to validate output voltages for optimum performance and trouble-free operation
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Carquest Premium – Voltage Regulator (Part No.RAA1056)

Voltage Regulator

from

$14.49
CARQUEST Voltage Regulators are engineered and created by an automotive charging system manufacturer designed to meet or exceed OEM specifications. By fully understanding how the alternator and the voltage regulator interact ensures that the CARQUEST volt

Product Features:
  • CARQUEST Voltage Regulators are designed to match OE fit, form and function. Fitted with critical OEM electronic components results in longer life expectancy.
  • CARQUEST Voltage Regulators are mechanically designed with utilization of surface mount technology, robust mechanical housing, and consistent encapsulation to protect against moistures & vibration.
  • CARQUEST Voltage Regulators uses surface mount technology and uniform encapsulation to protect against moistures & vibration.
  • CARQUEST Voltage Regulators are 100% individually tested for all product functionalities that includes the proper voltage set-point, power capabilities, and other product specifications.
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GM Genuine Parts – Voltage Regulator (Part No.D618)

Voltage Regulator

from

$100.99
GM Genuine Parts Voltage Regulators are designed, engineered, and tested to rigorous standards, and are backed by General Motors. It monitors the proper voltage to your vehicle’s critical systems as the starting and charging system starts the engine, maintains the battery’s charge, and provides power to the electrical accessories while the engine is running. A GM Genuine Parts Voltage Regulator provides outstanding radio noise control for better performance and delivers needed system voltage. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:
  • Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
  • GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
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Carquest Premium – Voltage Regulator (Part No.RAA1051)

Voltage Regulator

from

$61.99
CARQUEST Voltage Regulators are engineered and created by an automotive charging system manufacturer designed to meet or exceed OEM specifications. By fully understanding how the alternator and the voltage regulator interact ensures that the CARQUEST volt

Product Features:
  • CARQUEST Voltage Regulators are designed to match OE fit, form and function. Fitted with critical OEM electronic components results in longer life expectancy.
  • CARQUEST Voltage Regulators are mechanically designed with utilization of surface mount technology, robust mechanical housing, and consistent encapsulation to protect against moistures & vibration.
  • CARQUEST Voltage Regulators uses surface mount technology and uniform encapsulation to protect against moistures & vibration.
  • CARQUEST Voltage Regulators are 100% individually tested for all product functionalities that includes the proper voltage set-point, power capabilities, and other product specifications.
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Carquest Premium – New Voltage Regulator (Part No.RAG1006)

New Voltage Regulator

from

$102.99
CARQUEST Voltage Regulators are engineered and created by an automotive charging system manufacturer designed to meet or exceed OEM specifications. By fully understanding how the alternator and the voltage regulator interact ensures that the CARQUEST volt

Product Features:
  • CARQUEST Voltage Regulators are designed to match OE fit, form and function. Fitted with critical OEM electronic components results in longer life expectancy.
  • CARQUEST Voltage Regulators are mechanically designed with utilization of surface mount technology, robust mechanical housing, and consistent encapsulation to protect against moistures & vibration.
  • CARQUEST Voltage Regulators uses surface mount technology and uniform encapsulation to protect against moistures & vibration.
  • CARQUEST Voltage Regulators are 100% individually tested for all product functionalities that includes the proper voltage set-point, power capabilities, and other product specifications.
See More

Carquest – Voltage Regulator (Part No.R153)

Voltage Regulator

from

$98.05
Product Features:
  • Our Throttle Position Sensors maintain specific installed outputs to match OE rather than adjustable consolidated designs
  • Circuits are printed on flexible polyimide film or ceramic-based substrates for excellent dimensional stability preventing electrical performance drift. Noble palladium/gold/platinum alloys provide low contact resistance for extended service life
  • Each TPS uses integral rotor bearings and return springs for easy installation
  • Each sensor undergoes rigorous end-of-line testing with thousands of data points to validate output voltages for optimum performance and trouble-free operation
See More

Carquest Premium – Voltage Regulator (Part No.RAE1008)

Voltage Regulator

from

$71.99
CARQUEST Voltage Regulators are engineered and created by an automotive charging system manufacturer designed to meet or exceed OEM specifications. By fully understanding how the alternator and the voltage regulator interact ensures that the CARQUEST volt

Product Features:
  • CARQUEST Voltage Regulators are designed to match OE fit, form and function. Fitted with critical OEM electronic components results in longer life expectancy.
  • CARQUEST Voltage Regulators are mechanically designed with utilization of surface mount technology, robust mechanical housing, and consistent encapsulation to protect against moistures & vibration.
  • CARQUEST Voltage Regulators uses surface mount technology and uniform encapsulation to protect against moistures & vibration.
  • CARQUEST Voltage Regulators are 100% individually tested for all product functionalities that includes the proper voltage set-point, power capabilities, and other product specifications.
See More

Carquest Premium – Voltage Regulator (Part No.RAG1071)

Voltage Regulator

from

$50.99
CARQUEST Voltage Regulators are engineered and created by an automotive charging system manufacturer designed to meet or exceed OEM specifications. By fully understanding how the alternator and the voltage regulator interact ensures that the CARQUEST volt

Product Features:
  • CARQUEST Voltage Regulators are designed to match OE fit, form and function. Fitted with critical OEM electronic components results in longer life expectancy.
  • CARQUEST Voltage Regulators are mechanically designed with utilization of surface mount technology, robust mechanical housing, and consistent encapsulation to protect against moistures & vibration.
  • CARQUEST Voltage Regulators uses surface mount technology and uniform encapsulation to protect against moistures & vibration.
  • CARQUEST Voltage Regulators are 100% individually tested for all product functionalities that includes the proper voltage set-point, power capabilities, and other product specifications.
See More

Carquest – Voltage Regulator (Part No.R279)

Voltage Regulator

from

$37.05
Product Features:
  • Our Throttle Position Sensors maintain specific installed outputs to match OE rather than adjustable consolidated designs
  • Circuits are printed on flexible polyimide film or ceramic-based substrates for excellent dimensional stability preventing electrical performance drift. Noble palladium/gold/platinum alloys provide low contact resistance for extended service life
  • Each TPS uses integral rotor bearings and return springs for easy installation
  • Each sensor undergoes rigorous end-of-line testing with thousands of data points to validate output voltages for optimum performance and trouble-free operation
See More

Carquest Premium – Voltage Regulator (Part No.RAG1093)

Voltage Regulator

from

$26.99
CARQUEST Voltage Regulators are engineered and created by an automotive charging system manufacturer designed to meet or exceed OEM specifications. By fully understanding how the alternator and the voltage regulator interact ensures that the CARQUEST voltage regulators have a longer life expectancy.

Product Features:
  • CARQUEST Voltage Regulators are designed to match OE fit, form and function. Fitted with critical OEM electronic components results in longer life expectancy.
  • CARQUEST Voltage Regulators are mechanically designed with utilization of surface mount technology, robust mechanical housing, and consistent encapsulation to protect against moistures & vibration.
  • CARQUEST Voltage Regulators uses surface mount technology and uniform encapsulation to protect against moistures & vibration.
  • CARQUEST Voltage Regulators are 100% individually tested for all product functionalities that includes the proper voltage set-point, power capabilities, and other product specifications.
See More

FAQs for International LM121 Voltage Regulators

What are the most popular Voltage Regulators for the International LM121?

With 1 brands you can trust, our most popular Voltage Regulators for the International LM121 are:
Voltage Regulator
from $50.99
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Voltage Regulator
Voltage Regulators
Voltage Regulator
from $71.99
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Voltage Regulator
Voltage Regulators