2021 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

23 Alternator / Generator parts are listed for the 2021 Honda Civic, from WAI GLOBAL, BOSCH, PURE ENERGY and 7 other brands. SKP SK11847 carries the "Popular" badge. 2 parts fit every engine; the other 21 are engine-specific.

In the New grade, WAI GLOBAL, SKP, TYC and 1 other brand supply 8 parts: brand-new units rather than rebuilt ones. A representative part number is SKP SK11847.

In the Remanufactured grade, PURE ENERGY, REMY, TERREPOWER and 4 other brands supply 15 parts: factory-rebuilt units with new wear components. A representative part number is ACDELCO 3343203A.

This table covers the rectifier diode packs in the alternator. Read more

One part is listed for the 2021 Honda Civic — BOSCH 1986AE0603.

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

This group shows a single part: BOSCH 1986AE0627.

This table covers the pulleys on the alternator shaft. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt. Read more

7 Alternator / Generator Pulley parts for the 2021 Honda Civic come from 3 brands — CONTINENTAL, ACKOJA and LITENS.

Listed part numbers: ACKOJA A26230004, ACKOJA A26230003 and CONTINENTAL 49974, plus the other parts above.

This table covers the Alternator / Generator stators. Read more

This group shows a single part: BOSCH 1986AE0677.

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

10 Battery parts for the 2021 Honda Civic come from 7 brands — DEKA, EXIDE, P1MAX and 4 other brands. The "Popular" part is DEKA 9A47. 6 parts fit every engine; the other 4 are engine-specific.

In the AGM (Extended Life) grade, DEKA, EXIDE, P1MAX and 3 other brands supply 9 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is DEKA 9A47.

In the Performance AGM (Extended Life + Increased Power) grade, FULLRIVER supplies 1 part: grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. A representative part number is FULLRIVER FT61047.

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 2021 Honda Civic, from SKP and STANDARD MOTOR PRODUCTS. All of them fit every engine offered in the 2021 Civic.

Part numbers include SKP SKBSC139 and STANDARD MOTOR PRODUCTS BSC139.

This table covers the fuse blocks that hold this vehicle's fuses. Read more

One part is listed for the 2021 Honda Civic — DORMAN 956652.

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

DORMAN supplies both parts for the 2021 Honda Civic.

This group includes DORMAN 99529ST and DORMAN 99789ST.

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

17 Speed Sensor parts for the 2021 Honda Civic come from 5 brands — DELPHI, BECK/ARNLEY, STANDARD MOTOR PRODUCTS and 2 other brands. The "Popular" part is HOLSTEIN 2VSS0523. 1 part fits every engine; the other 16 are engine-specific.

The Economy section lists 7 options from BECK/ARNLEY, HOLSTEIN and VEMO — the catalog's value-priced group. HOLSTEIN 2VSS0523 is listed in this group.

In the Standard Replacement grade, DELPHI and STANDARD MOTOR PRODUCTS supply 10 parts: built to original-equipment specification. A representative part number is DELPHI SS12397.

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

22 Starter Motor parts are listed for the 2021 Honda Civic, from REMY, TERREPOWER, WAI GLOBAL and 7 other brands. TYC 116434 carries the "Popular" badge.

New: 7 parts, from WAI GLOBAL, TYC, ULTRA-POWER and 2 other brands. A representative part number is TYC 116434.

Remanufactured: 15 parts, from PURE ENERGY, FVP, REMY and 4 other brands. A representative part number is FAMOUS BRAND 12467S.