2021 Nissan Sentra 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

5 Alternator / Generator parts for the 2021 Nissan Sentra come from 5 brands — WAI GLOBAL, FVP, PURE ENERGY and 2 other brands. The "Popular" part is WAI GLOBAL 21603N.

The New section lists 1 option from WAI GLOBAL — brand-new units rather than rebuilt ones. WAI GLOBAL 21603N is listed in this group.

The Remanufactured section lists 4 options from FVP, PURE ENERGY, REMY and 1 other brand — factory-rebuilt units with new wear components. FVP 10377 is listed in this group.

This group includes WAI GLOBAL 21603N and FVP 10377 and the remaining parts above.

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

2 Alternator / Generator Pulley parts are listed for the 2021 Nissan Sentra, from CONTINENTAL and LITENS.

This group includes CONTINENTAL 48712 and LITENS 920140A.

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 are listed for the 2021 Nissan Sentra, from DEKA, FVP, EXIDE and 3 other brands. DEKA 9A47 carries the "Popular" badge.

The AGM (Extended Life) section lists 5 options from DEKA, FVP, EXIDE and 2 other brands — grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. DEKA 9A47 is listed in this group.

The Performance AGM (Extended Life + Increased Power) section lists 1 option from FULLRIVER — grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. FULLRIVER FT61047 is listed in this group.

Listed part numbers: DEKA 9A47, FVP P47AGM and EXIDE MXH5L247, plus the other parts 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

This group shows a single part: STANDARD MOTOR PRODUCTS BSC147.

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

2 Keyless Entry Remote parts for the 2021 Nissan Sentra come from DORMAN.

This group includes DORMAN 99631ST and DORMAN 99630ST.

This table covers the ultrasonic park-aid sensors in the bumper. 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 Parking Aid Sensor parts for the 2021 Nissan Sentra come from 2 brands — DORMAN and TECHPRO.

Listed part numbers: DORMAN 684122 and TECHPRO NI1175106.

This table covers the brackets that mount the Parking Aid Sensor. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

2 Parking Aid Sensor Bracket parts for the 2021 Nissan Sentra come from 2 brands — TECHPRO and VARIOUS MFR.

Listed part numbers: TECHPRO NI1074104, plus the other parts above.

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

12 Speed Sensor parts are listed for the 2021 Nissan Sentra, from SKP, STANDARD MOTOR PRODUCTS, DELPHI and 6 other brands. HOLSTEIN 2VSS0056 carries the "Popular" badge.

In the Economy grade, SKP, HOLSTEIN, AUTOTECNICA and 3 other brands supply 7 parts: the catalog's value-priced group. A representative part number is HOLSTEIN 2VSS0056.

The Standard Replacement section lists 5 options from DELPHI, NTK, STANDARD MOTOR PRODUCTS and 1 other brand — built to original-equipment specification. DELPHI SS11426 is listed in this group.

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

4 Starter Motor parts for the 2021 Nissan Sentra come from 4 brands — FVP, PURE ENERGY, REMY and 1 other brand.

Part numbers include FVP 12842 and REMY 16654, among others listed above.