2003 Honda Civic Electrical Parts

This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator. Read more

7 Alternator / Generator parts are listed for the 2003 Honda Civic, from WAI GLOBAL, DENSO, ACDELCO and 4 other brands. WAI GLOBAL 13977N carries the "Popular" badge.

In the New grade, WAI GLOBAL supplies 1 part: brand-new units rather than rebuilt ones. A representative part number is WAI GLOBAL 13977N.

In the Remanufactured grade, DENSO, ACDELCO, FVP and 3 other brands supply 6 parts: factory-rebuilt units with new wear components. A representative part number is DENSO 2100525.

Listed part numbers: WAI GLOBAL 13977N, DENSO 2100525 and ACDELCO 3341499, plus the other parts above.

This table covers the bearings in the alternator housing. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

7 Alternator / Generator End Bearing parts for the 2003 Honda Civic come from 6 brands — SKF, WJB / INMOTION PARTS, ACDELCO and 3 other brands. The "Popular" part is ACDELCO 203FF.

The Economy section lists 1 option from WJB / INMOTION PARTS — the catalog's value-priced group. WJB / INMOTION PARTS RB62032RS is listed in this group.

In the Standard Replacement grade, SKF, ACDELCO, NATIONAL and 2 other brands supply 6 parts: built to original-equipment specification. A representative part number is ACDELCO 203FF.

Part numbers include ACDELCO 203FF and WJB / INMOTION PARTS RB62032RS, among others listed above.

This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery. Read more

6 Battery parts for the 2003 Honda Civic come from 6 brands — ACDELCO, BOSCH, DEKA and 3 other brands. The "Popular" part is ACDELCO 51RAGM.

Part numbers include ACDELCO 51RAGM, BOSCH S6594B and DEKA 9A51RT, among others listed above.

This table covers the Battery Current sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

2 Battery Current Sensor parts are listed for the 2003 Honda Civic, from STANDARD MOTOR PRODUCTS and WELLS.

This group includes STANDARD MOTOR PRODUCTS SBC110 and WELLS 5S16102.

This table covers the terminals and clamps that connect cables to the battery posts. Read more

2 Battery Terminal parts for the 2003 Honda Civic come from DEKA.

Part numbers include DEKA 00350 and DEKA 01056.

This table covers the flasher units that blink the turn signals and hazards. Read more

6 Flasher parts for the 2003 Honda Civic come from 4 brands — WELLS, STANDARD MOTOR PRODUCTS, BUSSMANN and 1 other brand. The "Popular" part is WELLS 1R1453.

The Heavy-Duty Electronic section lists 1 option from BUSSMANN — grouped under the catalog's "Heavy-Duty Electronic" designation — the notes column spells out what sets them apart. BUSSMANN 758 is listed in this group.

Standard Replacement: 1 part, from WELLS. A representative part number is WELLS 1R1453.

4 further parts sit outside the graded sections, with the same engine-level match.

Part numbers include WELLS 1R1453, BUSSMANN 758 and TRIDON / NOVITA EP34, among others listed above.

This table covers the replacement fuses for this vehicle's fuse boxes. Typical signs include one circuit dead while its neighbor still works, or a fuse that blows again as soon as you replace it. Match amperage and fuse type. A repeat blow means a short — find it before the next fuse. Read more

29 Fuse parts for the 2003 Honda Civic come from 2 brands — BUSSMANN and LITTELFUSE. The "Popular" part is BUSSMANN ATM10. 10 Amp, 15 Amp, 2 Amp, 20 Amp, 30 Amp, 40 Amp, 50 Amp, 7.5 Amp and 80 Amp are all represented, and 10 Amp alone accounts for 5 parts.

This table covers the horns mounted in the front of the vehicle. Read more

13 Horn parts for the 2003 Honda Civic come from FIAMM. The "Popular" part is FIAMM 7210223.

The Accessory Replacement section lists 7 options from FIAMM — grouped under the catalog's "Accessory Replacement" designation — the notes column spells out what sets them apart. FIAMM 7210223 is listed in this group.

Standard Replacement: 6 parts, from FIAMM. A representative part number is FIAMM 7250522.

This table covers the key fobs that lock, unlock and start the vehicle. Read more

One part is listed for the 2003 Honda Civic — DORMAN 99372.

This table covers the replacement shells for the key fob. Read more

DORMAN supplies both parts for the 2003 Honda Civic.

Listed part numbers: DORMAN 13629 and DORMAN 13673.

This table covers the detectors that report load or occupancy. Read more

One part is listed for the 2003 Honda Civic — DORMAN 601019.

This table covers the speed sensors on the transmission, transfer case or ABS ring. Typical signs include a dead speedometer, harsh transmission shifts, or a code for vehicle speed. Inspect the tone wheel and the connector before replacing the sensor. Read more

3 Speed Sensor parts for the 2003 Honda Civic come from 3 brands — PIONEER, STANDARD MOTOR PRODUCTS and WELLS.

Listed part numbers: PIONEER SPS1316, STANDARD MOTOR PRODUCTS SC276 and WELLS 5S4884.

This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

6 Starter Motor parts are listed for the 2003 Honda Civic, from BOSCH, WAI GLOBAL, DENSO and 3 other brands. DENSO 2800334 carries the "Popular" badge.

New: 2 parts, from BOSCH and WAI GLOBAL. A representative part number is BOSCH SR4257N.

Remanufactured: 4 parts, from DENSO, PURE ENERGY, REMY and 1 other brand. A representative part number is DENSO 2800334.

Part numbers include DENSO 2800334, BOSCH SR4257N and WAI GLOBAL 17962N, among others listed above.

This table covers the Starter solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid. Read more

One part is listed for the 2003 Honda Civic — WELLS 1M1431.

This table covers the regulators that control alternator output voltage. Read more

3 Voltage Regulator parts for the 2003 Honda Civic come from 2 brands — STANDARD MOTOR PRODUCTS and ACDELCO.

This group includes ACDELCO E645C, STANDARD MOTOR PRODUCTS VR600 and STANDARD MOTOR PRODUCTS VR577.