The 2021 Kia Forte has 32 electrical connector parts with verified fitment on this page — 21 part types and 6 brands, covering both the 1.6L L4 Turbocharged and the 2.0L L4. Each part includes a manufacturer part number and application notes.
On the 2021 Kia Forte, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. Most of the listed parts are Knock / Detonation Sensor Connector (3 parts), Vapor Canister Purge Valve / Solenoid Connector (3 parts) and Variable Valve Timing (VVT) Solenoid Connector (3 parts). The other 18 part types cover the remaining 23 parts.
The 2021 Kia Forte was sold with both the 1.6L L4 Turbocharged and the 2.0L L4. 20 parts fit every engine; the other 12 are engine-specific. Each part shows which engine(s) it fits.
6 brands supply electrical connector parts for the 2021 Kia Forte, led by STANDARD MOTOR PRODUCTS (26 parts), ACDELCO (2 parts) and WALKER PRODUCTS (1 part), plus 3 more brands.
Each part number listed for the 2021 Kia Forte opens a page with every vehicle that part fits.
Accelerator Pedal Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S2815 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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 S2815.
Alternator / Generator Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S2533 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
Camshaft Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 | S2438 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
This group shows a single part: STANDARD MOTOR PRODUCTS S2438.
Crankshaft Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S3064 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WALKER PRODUCTS Fits: 2.0L L4 | 2701098 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
2 Crankshaft Position Sensor Connector parts for the 2021 Kia Forte come from 2 brands — STANDARD MOTOR PRODUCTS and WALKER PRODUCTS. 1 part fits every engine; the other 1 is engine-specific.
This group includes STANDARD MOTOR PRODUCTS S3064 and WALKER PRODUCTS 2701098.
EGR Valve Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S2488 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the harness connectors at the EGR Valve. 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 S2488.
Fuel Sending Unit Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S2827 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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 S2827.
Fuel Tank Pressure Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S3121 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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 2021 Kia Forte — STANDARD MOTOR PRODUCTS S3121.
Headlamp Wiring Harness / Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S3279 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Blue Connectorwith 10 Terminal(s) | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S3280 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 14 Terminal.with Green Connector | 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.
STANDARD MOTOR PRODUCTS supplies both parts for the 2021 Kia Forte. All of them fit every engine offered in the 2021 Forte.
This group includes STANDARD MOTOR PRODUCTS S3279 and STANDARD MOTOR PRODUCTS S3280.
Ignition Coil Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S2894 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
This group shows a single part: STANDARD MOTOR PRODUCTS S2894.
Knock / Detonation Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 2.0L L4 | PT2309 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 | HP4750 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HandypackConnector Shape: Oval | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 | S578 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: OvalGauge: 18 | 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.
3 Knock / Detonation Sensor Connector parts for the 2021 Kia Forte come from 2 brands — STANDARD MOTOR PRODUCTS and ACDELCO.
Listed part numbers: ACDELCO PT2309, STANDARD MOTOR PRODUCTS HP4750 and STANDARD MOTOR PRODUCTS S578.
Mass Air Flow (MAF) Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 | S2900 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: Rectangular, N/A | View on Amazon |
This table covers the harness connectors at the Mass Air Flow (MAF) 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 2021 Kia Forte — STANDARD MOTOR PRODUCTS S2900.
Oxygen (O2) Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S3133 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Downstream Sensor | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S1419 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
2 Oxygen (O2) Sensor Connector parts for the 2021 Kia Forte come from STANDARD MOTOR PRODUCTS. Every part fits both the 1.6L L4 Turbocharged and the 2.0L L4.
This group includes STANDARD MOTOR PRODUCTS S3133 and STANDARD MOTOR PRODUCTS S1419.
Parking Aid Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S3223 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
This table covers the harness connectors at the Parking Aid 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 S3223.
Radiator Fan Resistor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 | S3162 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Harness LengthCM: 37 | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 | S3308 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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 2021 Kia Forte come from STANDARD MOTOR PRODUCTS.
Part numbers include STANDARD MOTOR PRODUCTS S3162 and STANDARD MOTOR PRODUCTS S3308.
Radio Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| METRA Fits: all 2021 Forte engines | AXUSBHK2 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | USB Adapter Cable Harness | 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.
One part is listed for the 2021 Kia Forte — METRA AXUSBHK2.
Temperature Sender / Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S3094 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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 S3094.
Throttle Control Actuator Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 1.6L L4 Turbocharged | S2817 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the harness connectors at the Throttle Control Actuator. 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 S2817.
Trailer Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CURT Fits: all 2021 Forte engines | 56457 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Custom Wiring Harness4-Way Flat Output | View on Amazon |
| TEKONSHA Fits: all 2021 Forte engines | 118814 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | T-One Connector Assembly | 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.
2 Trailer Connector parts are listed for the 2021 Kia Forte, from CURT and TEKONSHA. All of them fit every engine offered in the 2021 Forte.
Listed part numbers: CURT 56457 and TEKONSHA 118814.
Vapor Canister Purge Valve / Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | HP4625 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HandypackTerminal Type: Blade Terminals | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S1350 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Length (In): 1.125Terminal Type: Blade Terminals | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S1414 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: RectangleTerminal Type: Blade | 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.
3 Vapor Canister Purge Valve / Solenoid Connector parts for the 2021 Kia Forte come from STANDARD MOTOR PRODUCTS. Every part fits both the 1.6L L4 Turbocharged and the 2.0L L4.
This group includes STANDARD MOTOR PRODUCTS HP4625, STANDARD MOTOR PRODUCTS S1350 and STANDARD MOTOR PRODUCTS S1414.
Variable Valve Timing (VVT) Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 2.0L L4 | PT2386 | 🇺🇸 US 🇨🇦 CA | GoldShape: Square | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 | HP3840 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HandypackWiring Harness Length (mm): 158.75 | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 | TX3A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Wiring Harness Length (mm): 158.75Black | 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 2021 Kia Forte come from 2 brands — STANDARD MOTOR PRODUCTS and ACDELCO.
Part numbers include ACDELCO PT2386, STANDARD MOTOR PRODUCTS HP3840 and STANDARD MOTOR PRODUCTS TX3A.
Washer Pump Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Forte engines | S1530 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: OvalHarness Length | 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 S1530.
Buying Electrical Connector Parts for a 2021 Kia Forte
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. Some electrical connector parts fit every engine; others are 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: Knock / Detonation Sensor Connector and Vapor Canister Purge Valve / Solenoid Connector .
Frequently Asked Questions
How many electrical connector parts fit the 2021 Kia Forte?
Our catalog currently lists 32 electrical connector parts for the 2021 Kia Forte across 21 subcategories and 6 brands, covering both the 1.6L L4 Turbocharged and the 2.0L L4. Each part is matched to the engine(s) it fits.
Do electrical connector parts differ between 2021 Kia Forte engines?
Some do. 20 parts fit every engine; the other 12 are engine-specific. Each row (and the filter at the top) shows which. 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 2021 Kia Forte?
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 2021 Kia Forte 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 2021 Kia Forte?
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 2021 Kia Forte
Electrical Connector Parts for Other Kia Forte Years
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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.