The 2021 Genesis G90 has 17 electrical connector parts with verified fitment on this page — 12 part types and 5 brands, covering both the 3.3L V6 Turbocharged and the 5.0L V8. Each part includes a manufacturer part number and application notes.
The connector system on the 2021 Genesis G90 supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. The largest groups are Crankshaft Position Sensor Connector (3 parts), Ambient Air Temperature Sensor Connector (2 parts) and Blower Motor Control Module / Resistor Connector (2 parts). The other 9 part types cover the remaining 10 parts.
The 2021 Genesis G90 was sold with both the 3.3L V6 Turbocharged and the 5.0L V8. 10 parts fit every engine; the other 7 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Genesis G90 electrical connector parts are STANDARD MOTOR PRODUCTS (11 parts), WALKER PRODUCTS (3 parts) and ULTRA-POWER (1 part), plus 2 more brands.
Each part number listed for the 2021 Genesis G90 opens a page with every vehicle that part fits.
Accessory Power Relay Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 G90 engines | S1536 | 🇺🇸 US 🇨🇦 CA | Connector Shape: PolygonWire Gauge (GA): 8, 16 | 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.
One part is listed for the 2021 Genesis G90 — STANDARD MOTOR PRODUCTS S1536.
Ambient Air Temperature Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 G90 engines | HP4720 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Oval | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 G90 engines | S575 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalHarness Length | 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.
STANDARD MOTOR PRODUCTS supplies both parts for the 2021 Genesis G90. All of them fit every engine offered in the 2021 G90.
This group includes STANDARD MOTOR PRODUCTS HP4720 and STANDARD MOTOR PRODUCTS S575.
Blower Motor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 G90 engines | 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.
One part is listed for the 2021 Genesis G90 — STANDARD MOTOR PRODUCTS S3205.
Blower Motor Control Module / Resistor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 G90 engines | HP4145 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Rectangle | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 G90 engines | S1519 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RectangleContact Terminal Material: Metal | 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.
2 Blower Motor Control Module / Resistor Connector parts for the 2021 Genesis G90 come from STANDARD MOTOR PRODUCTS. Every part fits both the 3.3L V6 Turbocharged and the 5.0L V8.
Listed part numbers: STANDARD MOTOR PRODUCTS HP4145 and STANDARD MOTOR PRODUCTS S1519.
Crankshaft Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Fits: 5.0L V8 | 2701089 | 🇺🇸 US 🇨🇦 CA | Crank Position Sensor Connector | View on Amazon |
| WALKER PRODUCTS Fits: 3.3L V6 Turbocharged | 2701098 | 🇺🇸 US | View on Amazon | |
| WALKER PRODUCTS Fits: 5.0L V8 | 2701089 | 🇺🇸 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.
3 Crankshaft Position Sensor Connector parts are listed for the 2021 Genesis G90, from WALKER PRODUCTS and ULTRA-POWER.
Part numbers include ULTRA-POWER 2701089 and WALKER PRODUCTS 2701098, among others listed above.
EGR Valve Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Fits: all 2021 G90 engines | SKS575 | 🇺🇸 US 🇨🇦 CA | 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.
One part is listed for the 2021 Genesis G90 — SKP SKS575.
Fuel Injection Pressure Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: 5.0L V8 | 2HAR0060 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 5.0L V8 | S2316 | 🇺🇸 US 🇨🇦 CA | 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 are listed for the 2021 Genesis G90, from HOLSTEIN and STANDARD MOTOR PRODUCTS.
This group includes HOLSTEIN 2HAR0060 and STANDARD MOTOR PRODUCTS S2316.
Fuel Tank Pressure Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 G90 engines | 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.
This group shows a single part: STANDARD MOTOR PRODUCTS S3121.
Headlamp Wiring Harness / Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 G90 engines | S3280 | 🇺🇸 US 🇨🇦 CA | 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.
This group shows a single part: STANDARD MOTOR PRODUCTS S3280.
Ignition Coil Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 3.3L V6 Turbocharged | S2894 | 🇺🇸 US | 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.
One part is listed for the 2021 Genesis G90 — STANDARD MOTOR PRODUCTS S2894.
Manifold Pressure (MAP) Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS Fits: all 2021 G90 engines | 2701119 | 🇺🇸 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.
One part is listed for the 2021 Genesis G90 — WALKER PRODUCTS 2701119.
Temperature Sender / Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 3.3L V6 Turbocharged | S3094 | 🇺🇸 US | 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.
One part is listed for the 2021 Genesis G90 — STANDARD MOTOR PRODUCTS S3094.
Buying Electrical Connector Parts for a 2021 Genesis G90
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: Crankshaft Position Sensor Connector and Ambient Air Temperature Sensor Connector .
Frequently Asked Questions
How many electrical connector parts fit the 2021 Genesis G90?
Our catalog currently lists 17 electrical connector parts for the 2021 Genesis G90 across 12 subcategories and 5 brands, covering both the 3.3L V6 Turbocharged and the 5.0L V8. Each part is matched to the engine(s) it fits.
Do electrical connector parts differ between 2021 Genesis G90 engines?
Some do. 10 parts fit every engine; the other 7 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 Genesis G90?
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 Genesis G90 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 Genesis G90?
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 Genesis G90
Electrical Connector Parts for Other Genesis G90 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.