This page lists 74 electrical connector parts for the 2012 Kia Optima, across 35 part types, covering all 3 engine options (2.0L L4 Turbocharged, 2.4L L4 and 2.4L L4 ELECTRIC/GAS). Every part shows its brand, manufacturer part number and fitment notes.
On the 2012 Kia Optima, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. 16 parts of the 74 listed are Blower Motor Control Module / Resistor Connector (7 parts), Manifold Pressure (MAP) Sensor Connector (5 parts) and A/C Refrigerant Pressure Switch Connector (4 parts). The other 32 part types cover the remaining 58 parts.
The 2012 Kia Optima was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
13 brands supply electrical connector parts for the 2012 Kia Optima, led by STANDARD MOTOR PRODUCTS (36 parts), WELLS (15 parts) and ROSTRA (5 parts), plus 10 more brands.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2012 Kia Optima. 3 parts have it, including WELLS 1P1789 (Blower Motor Control Module / Resistor Connector) and STANDARD MOTOR PRODUCTS S1461 (Manifold Pressure (MAP) Sensor Connector). Each part number opens a page with every vehicle that part fits.
A/C Compressor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S3264 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the A/C Compressor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S3264.
A/C Refrigerant Pressure Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS Fits: 2.4L L4 ELECTRIC/GAS | 37276 | 🇺🇸 US 🇨🇦 CA | 3 Terminal FemaleRectangular Connector | View on Amazon |
| GPD Fits: 2.4L L4 ELECTRIC/GAS | 1712679 | 🇺🇸 US 🇨🇦 CA | Pressure Transducer Pigtail | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S2458 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalWire Gauge (GA): 18, 20 | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | CON205 | 🇺🇸 US 🇨🇦 CA | Low PressureCut-Off | View on Amazon |
This table covers the harness connectors at the A/C Refrigerant Pressure Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
4 A/C Refrigerant Pressure Switch Connector parts are listed for the 2012 Kia Optima, from FOUR SEASONS, GPD, STANDARD MOTOR PRODUCTS and 1 other brand.
Listed part numbers: FOUR SEASONS 37276, GPD 1712679 and STANDARD MOTOR PRODUCTS S2458, plus the other parts above.
ABS Wheel Speed Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S3021 | 🇺🇸 US 🇨🇦 CA | Harness LengthInches: 18.5 | View on Amazon |
This table covers the harness connectors at each ABS wheel-speed sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S3021.
Accelerator Pedal Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S2082 | 🇺🇸 US 🇨🇦 CA | Wire Gauge (GA): 16 | View on Amazon |
This table covers the harness connectors at the Accelerator Pedal Position Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S2082.
Accessory Power Relay Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | HP3810 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Polygon | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S654 | 🇺🇸 US 🇨🇦 CA | Connector Shape: PolygonLength (In): 1 | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1P1143 | 🇺🇸 US 🇨🇦 CA | Terminal Quantity: 5Wiring Harness Length: 12.0 In | View on Amazon |
This table covers the harness connectors at the Accessory Power Relay. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
3 Accessory Power Relay Connector parts for the 2012 Kia Optima come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.
This group includes STANDARD MOTOR PRODUCTS HP3810, STANDARD MOTOR PRODUCTS S654 and WELLS 1P1143.
Alternator / Generator Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S2533 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Alternator / Generator. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S2533.
Ambient Air Temperature Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S2964 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Oval | View on Amazon |
This table covers the harness connectors at the Ambient Air Temperature Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S2964.
Blower Motor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S3205 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Blower Motor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S3205.
Blower Motor Control Module / Resistor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: 2.4L L4 ELECTRIC/GAS | 1P1789 | 🇺🇸 US 🇨🇦 CA | Terminal Quantity: 4Wire Quantity: 8 | View on Amazon |
| WELLS Popular Fits: 2.4L L4 ELECTRIC/GAS | 1P1565 | 🇺🇸 US 🇨🇦 CA | without Automatic Temperature Control | View on Amazon |
| FOUR SEASONS Fits: 2.4L L4 ELECTRIC/GAS | 37260 | 🇺🇸 US 🇨🇦 CA | 4 Terminal Malewith Female Lock Tab | View on Amazon |
| HOLSTEIN Fits: 2.4L L4 ELECTRIC/GAS | 2HAR0006 | 🇺🇸 US 🇨🇦 CA | with Manual Air Conditioning | View on Amazon |
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 610069 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S1785 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RectangleWiring Harness Length (In): 12.5 | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | CON43 | 🇺🇸 US 🇨🇦 CA | with Female Lock Tabwithout Automatic Temperature Control | View on Amazon |
This table covers the connectors at the blower resistor or control module. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
7 Blower Motor Control Module / Resistor Connector parts are listed for the 2012 Kia Optima, from WELLS, FOUR SEASONS, HOLSTEIN and 3 other brands. WELLS 1P1789 carries the "Popular" badge.
This group includes WELLS 1P1789, WELLS 1P1565 and FOUR SEASONS 37260 and the remaining parts above.
Brake Light Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S1785 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RectangleWiring Harness Length (In): 12.5 | View on Amazon |
This table covers the harness connectors at the Brake Light Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2012 Kia Optima — STANDARD MOTOR PRODUCTS S1785.
Camshaft Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 610604 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S2438 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1P2658 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Camshaft Position Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
3 Camshaft Position Sensor Connector parts for the 2012 Kia Optima come from 3 brands — ROSTRA, STANDARD MOTOR PRODUCTS and WELLS.
Part numbers include ROSTRA 610604, STANDARD MOTOR PRODUCTS S2438 and WELLS 1P2658.
Computer Control Relay Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S1600 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RectangleContact Terminal Material: Metal | View on Amazon |
This table covers the harness connectors at the Computer Control Relay. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2012 Kia Optima — STANDARD MOTOR PRODUCTS S1600.
Crankshaft Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S3153 | 🇺🇸 US 🇨🇦 CA | Connector Shape: Rectangle | View on Amazon |
This table covers the harness connectors at the Crankshaft Position Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S3153.
Fog / Driving Lamp Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 2.4L L4 ELECTRIC/GAS | PT2298 | 🇺🇸 US 🇨🇦 CA | GoldHeight (In): 1.5 in | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | HP3835 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Oval | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S553 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalContact Terminal Material: Metal | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1P1032 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Fog / Driving Lamp. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
4 Fog / Driving Lamp Connector parts for the 2012 Kia Optima come from 3 brands — STANDARD MOTOR PRODUCTS, ACDELCO and WELLS.
This group includes ACDELCO PT2298, STANDARD MOTOR PRODUCTS HP3835 and STANDARD MOTOR PRODUCTS S553 and the remaining parts above.
Fuel Injector Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GB REMANUFACTURING Fits: 2.4L L4 ELECTRIC/GAS | 5187 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S2330 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1P4050 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Fuel Injector. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
3 Fuel Injector Connector parts for the 2012 Kia Optima come from 3 brands — GB REMANUFACTURING, STANDARD MOTOR PRODUCTS and WELLS.
Listed part numbers: GB REMANUFACTURING 5187, STANDARD MOTOR PRODUCTS S2330 and WELLS 1P4050.
Fuel Pump / Circuit Opening Relay Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1P4004 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Fuel Pump / Circuit Opening Relay. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2012 Kia Optima — WELLS 1P4004.
Fuel Sending Unit Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S2873 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Fuel Sending Unit. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S2873.
Fuel Tank Pressure Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S3121 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Fuel Tank Pressure Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2012 Kia Optima — STANDARD MOTOR PRODUCTS S3121.
Headlamp Wiring Harness / Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | LWH110 | 🇺🇸 US 🇨🇦 CA | Blue StreakHigh Temperature | View on Amazon |
This table covers the wiring-harness connectors at the Headlamp. Typical signs include an intermittent fault that moves when you wiggle the harness, or a melted or corroded plug. Match terminal count and keyway. Repair with heat-shrink terminals, not twist-and-tape.
One part is listed for the 2012 Kia Optima — STANDARD MOTOR PRODUCTS LWH110.
Ignition Coil Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S1441 | 🇺🇸 US 🇨🇦 CA | Splice Connectors Included: Yes | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1P1680 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Ignition Coil. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
2 Ignition Coil Connector parts for the 2012 Kia Optima come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.
This group includes STANDARD MOTOR PRODUCTS S1441 and WELLS 1P1680.
Knock / Detonation Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 2.4L L4 ELECTRIC/GAS | PT2309 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | HP4750 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Oval | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S578 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalGauge: 18 | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1P1044 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OblongTerminal Quantity: 2 | View on Amazon |
This table covers the harness connectors at the Knock / Detonation Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
4 Knock / Detonation Sensor Connector parts for the 2012 Kia Optima come from 3 brands — STANDARD MOTOR PRODUCTS, ACDELCO and WELLS.
This group includes ACDELCO PT2309, STANDARD MOTOR PRODUCTS HP4750 and STANDARD MOTOR PRODUCTS S578 and the remaining parts above.
Manifold Pressure (MAP) Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 2.4L L4 ELECTRIC/GAS | S1461 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 610351 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UNITED MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | CON222 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WALKER PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | 2701119 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1P2657 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Manifold Pressure (MAP) Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
5 Manifold Pressure (MAP) Sensor Connector parts for the 2012 Kia Optima come from 5 brands — STANDARD MOTOR PRODUCTS, ROSTRA, UNITED MOTOR PRODUCTS and 2 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS S1461.
This group includes STANDARD MOTOR PRODUCTS S1461, ROSTRA 610351 and UNITED MOTOR PRODUCTS CON222 and the remaining parts above.
Oil Pressure Sender / Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S3077 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Oil Pressure Sender / Switch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2012 Kia Optima — STANDARD MOTOR PRODUCTS S3077.
Oil Temperature Sender Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 610085 | 🇺🇸 US 🇨🇦 CA | Centered Index Slot without Release | View on Amazon |
| ROSTRA Fits: 2.4L L4 ELECTRIC/GAS | 610049 | 🇺🇸 US 🇨🇦 CA | Centered Index Slot with Release | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1P1347 | 🇺🇸 US 🇨🇦 CA | Wire Gauge Measurement: 18 | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1P1002 | 🇺🇸 US 🇨🇦 CA | Centered Index with Release | View on Amazon |
This table covers the harness connectors at the Oil Temperature Sender. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
4 Oil Temperature Sender Connector parts are listed for the 2012 Kia Optima, from ROSTRA and WELLS.
Listed part numbers: ROSTRA 610085, ROSTRA 610049 and WELLS 1P1347, plus the other parts above.
Oxygen (O2) Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S1419 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalGender: Female | View on Amazon |
This table covers the harness connectors at the Oxygen (O2) Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S1419.
Radiator Fan Resistor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S3162 | 🇺🇸 US 🇨🇦 CA | Harness LengthCM: 37 | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S3308 | 🇺🇸 US 🇨🇦 CA | with 2 Terminal(s) | View on Amazon |
This table covers the harness connectors at the Radiator Fan Resistor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
2 Radiator Fan Resistor Connector parts for the 2012 Kia Optima come from STANDARD MOTOR PRODUCTS.
This group includes STANDARD MOTOR PRODUCTS S3162 and STANDARD MOTOR PRODUCTS S3308.
Radio Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| METRA Fits: 2.4L L4 ELECTRIC/GAS | 717304 | 🇺🇸 US 🇨🇦 CA | OEM Radio HarnessFor OEM Radio | View on Amazon |
| METRA Fits: 2.4L L4 ELECTRIC/GAS | AXUSBHK2 | 🇺🇸 US 🇨🇦 CA | USB Adapter Cable Harness | View on Amazon |
| METRA Fits: 2.4L L4 ELECTRIC/GAS | AXHYKIAUSB | 🇺🇸 US 🇨🇦 CA | Custom Fit USB Retention HarnessIncludes RCAs | View on Amazon |
This table covers the harness connectors at the Radio. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
METRA supplies the 3 Radio Connector parts for the 2012 Kia Optima.
Listed part numbers: METRA 717304, METRA AXUSBHK2 and METRA AXHYKIAUSB.
Starter Motor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S706 | 🇺🇸 US 🇨🇦 CA | Connector Shape: PolygonLength (In): 0.875 | View on Amazon |
This table covers the harness connectors at the Starter Motor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S706.
Temperature Sender / Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S3099 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Temperature Sender / Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S3099.
Trailer Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CURT Fits: 2.4L L4 ELECTRIC/GAS | 56058 | 🇺🇸 US 🇨🇦 CA | Custom Wiring Harness4-Way Flat | View on Amazon |
| CURT Fits: 2.4L L4 ELECTRIC/GAS | 56314 | 🇺🇸 US 🇨🇦 CA | Custom Wiring Harness4-Way Flat | View on Amazon |
| TEKONSHA Fits: 2.4L L4 ELECTRIC/GAS | 118453 | 🇺🇸 US 🇨🇦 CA | T-One Connector Assemblywith Upgraded Converter | View on Amazon |
This table covers the trailer-lighting connectors at the hitch. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
3 Trailer Connector parts are listed for the 2012 Kia Optima, from CURT and TEKONSHA.
This group includes CURT 56058, CURT 56314 and TEKONSHA 118453.
Vapor Canister Purge Valve / Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | HP4625 | 🇺🇸 US 🇨🇦 CA | HandypackTerminal Type: Blade Terminals | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S1350 | 🇺🇸 US 🇨🇦 CA | Length (In): 1.125Terminal Type: Blade Terminals | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S1414 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RectangleTerminal Type: Blade | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1P1479 | 🇺🇸 US 🇨🇦 CA | Gender: MaleWiring Harness Length: 15.5 In | View on Amazon |
This table covers the harness connectors at the Vapor Canister Purge Valve / Solenoid. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
4 Vapor Canister Purge Valve / Solenoid Connector parts for the 2012 Kia Optima come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.
This group includes STANDARD MOTOR PRODUCTS HP4625, STANDARD MOTOR PRODUCTS S1350 and STANDARD MOTOR PRODUCTS S1414 and the remaining parts above.
Vapor Canister Vent Valve / Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1P1479 | 🇺🇸 US 🇨🇦 CA | Gender: MaleWiring Harness Length: 15.5 In | View on Amazon |
This table covers the harness connectors at the Vapor Canister Vent Valve / Solenoid. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: WELLS 1P1479.
Variable Valve Timing (VVT) Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S1716 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalWire Gauge (GA): 14 | View on Amazon |
| WALKER PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | 2701102 | 🇺🇸 US 🇨🇦 CA | Fits Exhaustor Intake | View on Amazon |
| WELLS Fits: 2.4L L4 ELECTRIC/GAS | 1P1680 | 🇺🇸 US 🇨🇦 CA | For Intake and Exhaust Solenoids | View on Amazon |
This table covers the harness connectors at the Variable Valve Timing (VVT) Solenoid. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
3 Variable Valve Timing (VVT) Solenoid Connector parts for the 2012 Kia Optima come from 3 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and WELLS.
Part numbers include STANDARD MOTOR PRODUCTS S1716, WALKER PRODUCTS 2701102 and WELLS 1P1680.
Washer Fluid Level Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S2921 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalTerminal Type: Blade | View on Amazon |
This table covers the harness connectors at the Washer Fluid Level Sensor. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S2921.
Washer Pump Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.4L L4 ELECTRIC/GAS | S3131 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Washer Pump. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
This group shows a single part: STANDARD MOTOR PRODUCTS S3131.
Buying Electrical Connector Parts for a 2012 Kia Optima
On this vehicle, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules.
- Match the engine first. Every electrical connector part here is engine-specific; each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Blower Motor Control Module / Resistor Connector and Manifold Pressure (MAP) Sensor Connector .
Frequently Asked Questions
How many electrical connector parts fit the 2012 Kia Optima?
Our catalog currently lists 74 electrical connector parts for the 2012 Kia Optima across 35 subcategories and 13 brands, covering all 3 engine options (2.0L L4 Turbocharged, 2.4L L4 and 2.4L L4 ELECTRIC/GAS). Each part is matched to the engine(s) it fits.
Do electrical connector parts differ between 2012 Kia Optima engines?
Yes. Every electrical connector part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical connector problems on a 2012 Kia Optima?
Common symptoms include intermittent faults that move when the harness is wiggled, green corrosion inside a plug, or melted connector housings near heat sources. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2012 Kia Optima was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2012 Kia Optima?
First match the engine — each row shows which engine(s) the part fits. Then match the connector by terminal count and keyway, not just appearance — many families look identical but will not lock. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2012 Kia Optima
Electrical Connector Parts for Other Kia Optima Years
Switch vehicle or jump to a subcategory
Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.