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2003 Honda Civic
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Lifetime Replacement
2003 Honda Civic

2003 Honda Civic Voltage Regulators

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Standard Intermotor Voltage Regulator - Direct Fit, Sold individually
Standard®
Standard Intermotor Voltage Regulator - Direct Fit, Sold individually
Part Number: SIVR577
Guaranteed to Fit
$184.99
Vehicle Fitment
  • 2003 Honda Civic All Submodels All Engines Nippondenso
Product Details
Notes : Female Connector Gender; Alternator Mounting Location; Male Terminal Gender; Blade Terminal Type; (4) Terminals; 12VWarranty : 3-year or 36,000-mile Standard limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Series : Standard IntermotorRecommended Use : OE ReplacementProduct Fit : Direct Fit
Voltage Regulator - Direct Fit, 12 Volts, Sold individually
WAI®
Voltage Regulator - Direct Fit, 12 Volts, Sold individually
Part Number: WAIIM851
Guaranteed to Fit
$24.49
Vehicle Fitment
  • 2003 Honda Civic HX 4 Cyl 1.7L
  • 2003 Honda Civic Si 4 Cyl 1.7L
  • 2003 Honda Civic EX 4 Cyl 1.7L
  • 2003 Honda Civic GX 4 Cyl 1.7L
  • 2003 Honda Civic DX 4 Cyl 1.7L
  • 2003 Honda Civic LX 4 Cyl 1.7L
Product Details
Warranty : WAI limited warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Voltage : 12 VoltsRecommended Use : OE ReplacementProduct Fit : Direct Fit
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Product Questions & Answers

Standard Standard Intermotor Voltage Regulator - Direct Fit, Sold individually
$184.99
Q:Is this the part that keeps my car battery charged?
Zaylen
A:BEST ANSWERHi Zaylen, thank you for reaching out! It is generally the alternator or generator that does that job. Have a great day! Show less
Andrew B.
 
1 Question, 1 AnswerView all Q&As >

Helpful Automotive Resources

Where is the Voltage Regulator Located on an Alternator?
Where is the Voltage Regulator Located on an Alternator?To access the voltage regulator, all you need to do is park your vehicle, disconnect the car battery, and check the engine compartment. It’s helpful to look up the voltage regulator for your vehicle on CarParts.com so you can determine what it looks like. .kadence-column_d10526-07 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_d10526-07 > .kt-inside-inner-col,.kadence-column_d10526-07 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_d10526-07
Why Is My Battery Light On?
Why Is My Battery Light On?It’s normal to see the “battery icon” illuminated when you start your car. But if the battery light came on again while you were driving, that’s a different story. Here are the possible reasons why your battery light is on: It’s normal to see the “battery icon” illuminated when you start
Why Won’t My Car Start?
Why Won’t My Car Start?Automotive professionals break down no-start situations into two separate categories: crank-no-start and no-crank-no-start.
Alternator Voltage Regulation 101 (with Wiring Diagrams)
Alternator Voltage Regulation 101 (with Wiring Diagrams)As most people know, the alternator charges the battery whenever the engine is running while also supplying electricity to the car’s electronics. The alternator accomplishes these tasks through electromagnetic induction—a phenomenon that generates electrical current from a magnetic field. The alternator’s stator (background), rotor (center), and rectifier (foreground).
Bad Voltage Regulator: Symptoms, Testing, Replacement Cost & More
Bad Voltage Regulator: Symptoms, Testing, Replacement Cost & MoreAs most people know, the alternator charges the battery (whenever the engine is running) while also supplying electricity to the car’s electronics. The alternator accomplishes these tasks through electromagnetic induction—a phenomenon that generates electrical current from a magnetic field. The voltage regulator controls the amount of current that flows through the
P2503 Code: Charging System Voltage Low
P2503 Code: Charging System Voltage LowCode P2503 is set once the PCM detects that the alternator output is less than the target charging voltage during engine operation.