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2003 Honda Civic Si 2.0L I4 Alternator product image

Alternators

2003 Honda Civic Si 2.0L I4 Alternator

Part type: Alternator
Condition: Used | New | Remanufactured
Vehicle: Honda Civic Si
Engine: 2.0L I4
Product series: CPG-ALT
Product ID: ALT-2003-honda-civic-si-2-0l-i4

Verify by trim • K20 • Serpentine

Fitment Summary2003 Honda Civic Si • 2.0L I4 • K20 • Verify by trimCompatible Years: 2003VIN confirmation recommended

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VEHICLE MATCHING

VIN Fitment Check

Share your VIN and vehicle details so a parts specialist can help review compatibility. This form does not perform an automatic fitment lookup.

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PRODUCT INFORMATION

Description

2003 Honda Civic Si 2.0L I4 Alternator is an application-specific charging-system request for the 2003 Honda Civic Si. The listed engine is 2.0L I4 (K20). Confirm the alternator connector, pulley, mounting points and output with the VIN and original unit before requesting availability.

Fitment Notes

2003 Honda Civic Si 2.0L I4 alternator application.
Confirm the VIN, connector, pulley, mounting points and original alternator reference before requesting this part.

Important: Fitment information is subject to VIN and configuration review.

TECHNICAL DETAILS

Technical Specifications

Voltage12V

AmperageVerify by trim

Pulley TypeSerpentine

Pulley Grooves6

Regulator TypeInternal / verify

Connector TypeVerify by VIN / original unit

Engine codeK20

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VEHICLE FITMENT

Vehicle Fitment

Fitment details are subject to specialist review. Use your VIN or call before relying on a match.

Fits with VIN confirmation

Not sure if this fits?Call 1 (888) 258-9786 Use the VIN fitment check

Search vehicle fitment

Year	Make	Model	Trim	Engine	Notes
2003	Honda	Civic Si	—	2.0L I4	✓ Fits with VIN confirmation—

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FITMENT CHECKLIST

Before You Request This Part

Vehicle details and part references help a specialist review the request.

Have the 17-character VIN ready if possible.
Confirm the 2.0L I4 configuration and charging output.
Compare connector shape, pulley and mounting points with the original unit.
Share any OEM or interchange number printed on the original alternator.

PART QUESTIONS

Frequently Asked Questions

What alternator fits a 2003 Honda Civic Si?

The listed application is the 2.0L I4 with K20. Confirm the VIN, connector, pulley and output before requesting it.

What should I check before requesting a Civic Si alternator?

Match the engine, connector, pulley, mounting points and charging output to the original unit, then provide the VIN for confirmation.

Can the same alternator fit every Civic Si?

No. Alternator fitment can change by engine, trim, charging package, connector and pulley. VIN confirmation is recommended.

What condition options can I request?

Ask the parts team about used, new, remanufactured or aftermarket options for this application.

USA ShippingWe ship car parts to customers across the continental United States.

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Fast Enquiry ResponseOur parts team responds quickly with availability options.

Secure EnquiryYour vehicle and part details stay with our support team.

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Still Need Help Finding the Right Part?

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