28 Electrical connector parts are listed for the 2021 Kia Seltos, in 14 part types, covering all 4 engine options (1.4L L4 Turbocharged, 1.6L L4, 1.6L L4 Turbocharged and 2.0L L4). Each one has a brand, a manufacturer part number and notes that say where it fits.
The connector system on the 2021 Kia Seltos supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. The largest groups are Knock / Detonation Sensor Connector (5 parts), Radiator Fan Resistor Connector (3 parts) and Vapor Canister Purge Valve / Solenoid Connector (3 parts). The other 11 part types cover the remaining 17 parts.
The 2021 Kia Seltos was sold with 4 engines. 11 parts fit every engine; the other 17 are engine-specific. Each part shows which engine(s) it fits.
7 brands supply electrical connector parts for the 2021 Kia Seltos, led by STANDARD MOTOR PRODUCTS (21 parts), ACDELCO (2 parts) and WALKER PRODUCTS (1 part), plus 4 more brands.
Each part number listed for the 2021 Kia Seltos opens a page with every vehicle that part fits.
Alternator / Generator Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Seltos 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.
Crankshaft Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 1.6L L4, 1.6L L4 Turbocharged, 2.0L L4 | S3064 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WALKER PRODUCTS Fits: 2.0L L4 | 2701098 | 🇺🇸 US 🇨🇦 CA | 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 Seltos come from 2 brands — STANDARD MOTOR PRODUCTS and WALKER PRODUCTS.
This group includes STANDARD MOTOR PRODUCTS S3064 and WALKER PRODUCTS 2701098.
Fuel Injection Pressure Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: 1.6L L4, 1.6L L4 Turbocharged | 2HAR0060 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Located on Fuel Pump | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.6L L4, 1.6L L4 Turbocharged | S2316 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: OvalNumber of Splice Connectors Included: 3 | View on Amazon |
This table covers the harness connectors at the Fuel Injection 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.
2 Fuel Injection Pressure Sensor Connector parts for the 2021 Kia Seltos come from 2 brands — HOLSTEIN and STANDARD MOTOR PRODUCTS.
Part numbers include HOLSTEIN 2HAR0060 and STANDARD MOTOR PRODUCTS S2316.
Fuel Tank Pressure Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 1.6L L4, 1.6L L4 Turbocharged, 2.0L L4 | 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 Seltos — STANDARD MOTOR PRODUCTS S3121.
Ignition Coil Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Seltos 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: 1.6L L4, 1.6L L4 Turbocharged | HP4325 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HandypackConnector Shape: Rectangle | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.6L L4, 1.6L L4 Turbocharged | S1024 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: RectangleHarness Length | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 | HP4750 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Oval | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 | S578 | 🇺🇸 US 🇨🇦 CA | 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.
5 Knock / Detonation Sensor Connector parts for the 2021 Kia Seltos come from 2 brands — STANDARD MOTOR PRODUCTS and ACDELCO.
Part numbers include ACDELCO PT2309, STANDARD MOTOR PRODUCTS HP4325 and STANDARD MOTOR PRODUCTS S1024, among others listed above.
Oxygen (O2) Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 1.6L L4, 1.6L L4 Turbocharged, 2.0L L4 | S3133 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Downstream Sensor | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.6L L4, 1.6L L4 Turbocharged | 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 Seltos come from STANDARD MOTOR PRODUCTS.
Part numbers include STANDARD MOTOR PRODUCTS S3133 and STANDARD MOTOR PRODUCTS S1419.
Radiator Fan Resistor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Seltos engines | S3326 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with 2 Terminal(s) | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 | S3162 | 🇺🇸 US 🇨🇦 CA | Harness LengthCM: 37 | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.0L L4 | 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.
3 Radiator Fan Resistor Connector parts for the 2021 Kia Seltos come from STANDARD MOTOR PRODUCTS. 1 part fits every engine; the other 2 are engine-specific.
This group includes STANDARD MOTOR PRODUCTS S3326, STANDARD MOTOR PRODUCTS S3162 and STANDARD MOTOR PRODUCTS S3308.
Radio Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| METRA Fits: all 2021 Seltos 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 Seltos — METRA AXUSBHK2.
Temperature Sender / Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Seltos 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.
Trailer Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CURT Fits: all 2021 Seltos engines | 56442 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Custom Wiring Harness4-Way Flat Output | View on Amazon |
| TEKONSHA Fits: all 2021 Seltos engines | 118828 | 🇺🇸 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 Seltos, from CURT and TEKONSHA. All of them fit every engine offered in the 2021 Seltos.
Listed part numbers: CURT 56442 and TEKONSHA 118828.
Vapor Canister Purge Valve / Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Seltos engines | HP4625 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HandypackTerminal Type: Blade Terminals | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Seltos engines | S1350 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Length (In): 1.125Terminal Type: Blade Terminals | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 Seltos 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 Seltos come from STANDARD MOTOR PRODUCTS. Every part fits all 4 engine options (1.4L L4 Turbocharged, 1.6L L4, 1.6L L4 Turbocharged and 2.0L L4).
Listed part numbers: 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: 1.6L L4, 1.6L L4 Turbocharged, 2.0L L4 | PT2301 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.6L L4, 1.6L L4 Turbocharged, 2.0L L4 | HP4420 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Handypack | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.6L L4, 1.6L L4 Turbocharged, 2.0L L4 | S556 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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 Seltos come from 2 brands — STANDARD MOTOR PRODUCTS and ACDELCO.
Listed part numbers: ACDELCO PT2301, STANDARD MOTOR PRODUCTS HP4420 and STANDARD MOTOR PRODUCTS S556.
Washer Pump Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 Seltos engines | S3131 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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 2021 Kia Seltos
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 Radiator Fan Resistor Connector .
Frequently Asked Questions
How many electrical connector parts fit the 2021 Kia Seltos?
Our catalog currently lists 28 electrical connector parts for the 2021 Kia Seltos across 14 subcategories and 7 brands, covering all 4 engine options (1.4L L4 Turbocharged, 1.6L L4, 1.6L L4 Turbocharged and 2.0L L4). Each part is matched to the engine(s) it fits.
Do electrical connector parts differ between 2021 Kia Seltos engines?
Some do. 11 parts fit every engine; the other 17 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 Seltos?
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 Seltos 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 Seltos?
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 Seltos
Electrical Connector Parts for Other Kia Seltos Years
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