2012 Kia Optima 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

4 Alternator / Generator parts for the 2012 Kia Optima come from 4 brands — DENSO, VALEO, FVP and 1 other brand.

The New section lists 2 options from DENSO and VALEO — brand-new units rather than rebuilt ones. DENSO 2116030 is listed in this group.

The Remanufactured section lists 2 options from FVP and PURE ENERGY — factory-rebuilt units with new wear components. FVP 10161 is listed in this group.

This group includes DENSO 2116030, VALEO 616270 and FVP 10161 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 2012 Kia Optima, from CONTINENTAL and DORMAN.

This group includes CONTINENTAL 49732 and DORMAN 300857.

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

One part is listed for the 2012 Kia Optima — FULLRIVER FT75035.

This table covers the Battery Cooling fans. Typical signs include overheating at idle, a fan that never comes on, or a blade that hits the shroud. Confirm the fan command and the relay before replacing the assembly. Read more

3 Battery Cooling Fan parts are listed for the 2012 Kia Optima, from FOUR SEASONS, GPD and VDO / CONTINENTAL.

Listed part numbers: FOUR SEASONS 76805, GPD 2312073 and VDO / CONTINENTAL PM9508.

This table covers the engine-control modules that run fuel, spark and emissions. Read more

2 Engine Control Module (ECM Computer) parts for the 2012 Kia Optima come from BSE.

This group includes BSE ECC23174M and BSE EM23174.

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

17 Fuse parts are listed for the 2012 Kia Optima, from LITTELFUSE and BUSSMANN. LITTELFUSE MIN15 carries the "Popular" badge.

The 10 Amp section lists 2 options from BUSSMANN and LITTELFUSE — grouped under the catalog's "10 Amp" designation — the notes column spells out what sets them apart. BUSSMANN ATM10LP is listed in this group.

In the 125 Amp grade, LITTELFUSE supplies 1 part: grouped under the catalog's "125 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE MEG125.

In the 15 Amp grade, LITTELFUSE and BUSSMANN supply 2 parts: grouped under the catalog's "15 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE MIN15.

In the 150 Amp grade, LITTELFUSE supplies 1 part: grouped under the catalog's "150 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE MEG150.

In the 20 Amp grade, LITTELFUSE and BUSSMANN supply 2 parts: grouped under the catalog's "20 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE MIN20.

The 25 Amp section lists 2 options from BUSSMANN and LITTELFUSE — grouped under the catalog's "25 Amp" designation — the notes column spells out what sets them apart. BUSSMANN ATM25LP is listed in this group.

The 30 Amp section lists 3 options from LITTELFUSE and BUSSMANN — grouped under the catalog's "30 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE JCAS30 is listed in this group.

In the 40 Amp grade, LITTELFUSE and BUSSMANN supply 2 parts: grouped under the catalog's "40 Amp" designation — the notes column spells out what sets them apart. A representative part number is LITTELFUSE JCAS40.

The 50 Amp section lists 1 option from LITTELFUSE — grouped under the catalog's "50 Amp" designation — the notes column spells out what sets them apart. LITTELFUSE JCAS50 is listed in this group.

In the 7.5 Amp grade, BUSSMANN supplies 1 part: grouped under the catalog's "7.5 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN ATM712LP.

This table covers the HID Lighting ballasts. Read more

This group shows a single part: VEMO V20840043.

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

This group shows a single part: HELLA 358270241.

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

4 Speed Sensor parts are listed for the 2012 Kia Optima, from DELPHI, STANDARD MOTOR PRODUCTS, VEMO and 1 other brand.

Listed part numbers: DELPHI SS12266, STANDARD MOTOR PRODUCTS SC579 and VEMO V52720155, plus the other parts above.

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 2012 Kia Optima come from 4 brands — DENSO, VALEO, HYUNDAI and 1 other brand.

The New section: 2 options from DENSO and VALEO. DENSO 2816006 is listed in this group.

The Remanufactured section: 1 option from HYUNDAI. HYUNDAI 361002G000 is listed in this group.

1 further part sits outside the graded sections, with the same engine-level match.

Listed part numbers: DENSO 2816006, VALEO 849500 and HYUNDAI 361002G000, plus the other parts above.