32 Electrical connector parts are listed for the 2021 Nissan Maxima, in 23 part types, covering the 3.5L V6 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 Nissan Maxima, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. 7 parts of the 32 listed are Ignition Coil Connector (3 parts), A/C Refrigerant Pressure Switch Connector (2 parts) and Brake Light Switch Connector (2 parts). The other 20 part types cover the remaining 25 parts.
The 2021 Nissan Maxima came with a single engine, the 3.5L V6, and every part is verified against it.
9 brands supply electrical connector parts for the 2021 Nissan Maxima, led by STANDARD MOTOR PRODUCTS (16 parts), UNITED MOTOR PRODUCTS (4 parts) and WALKER PRODUCTS (3 parts), plus 6 more brands.
Each part number listed for the 2021 Nissan Maxima opens a page with every vehicle that part fits.
A/C Compressor Clutch Coil Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S2930 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the A/C Compressor Clutch 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 S2930.
A/C Refrigerant Pressure Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S2458 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalWire Gauge (GA): 18, 20 | View on Amazon |
| UNITED MOTOR PRODUCTS | CON205 | 🇺🇸 US 🇨🇦 CA | 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.
2 A/C Refrigerant Pressure Switch Connector parts are listed for the 2021 Nissan Maxima, from STANDARD MOTOR PRODUCTS and UNITED MOTOR PRODUCTS.
Part numbers include STANDARD MOTOR PRODUCTS S2458 and UNITED MOTOR PRODUCTS CON205.
Accelerator Pedal Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S2822 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalHarness Length | 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 S2822.
Alternator / Generator Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1P4274 | 🇺🇸 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: WELLS 1P4274.
Battery Cable Junction Block Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 956140 | 🇺🇸 US 🇨🇦 CA | OE FIX | View on Amazon |
This table covers the harness connectors at the Battery Cable Junction Block. 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 Nissan Maxima — DORMAN 956140.
Blower Motor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S3211 | 🇺🇸 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 S3211.
Brake Light Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | HP4145 | 🇺🇸 US 🇨🇦 CA | HandypackConnector Shape: Rectangle | View on Amazon |
| STANDARD MOTOR PRODUCTS | S1519 | 🇺🇸 US 🇨🇦 CA | Connector Shape: RectangleContact Terminal Material: Metal | 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.
STANDARD MOTOR PRODUCTS supplies both parts for the 2021 Nissan Maxima.
This group includes STANDARD MOTOR PRODUCTS HP4145 and STANDARD MOTOR PRODUCTS S1519.
Crankshaft Position Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S2844 | 🇺🇸 US 🇨🇦 CA | Gender: MaleWire Gauge (GA): 20 | View on Amazon |
| UNITED MOTOR PRODUCTS | CON211 | 🇺🇸 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 Nissan Maxima come from 2 brands — STANDARD MOTOR PRODUCTS and UNITED MOTOR PRODUCTS.
This group includes STANDARD MOTOR PRODUCTS S2844 and UNITED MOTOR PRODUCTS CON211.
Cruise Control Distance Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S2818 | 🇺🇸 US 🇨🇦 CA | Gauge: 20 Gauge | View on Amazon |
This table covers the harness connectors at the Cruise Control Distance 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 Nissan Maxima — STANDARD MOTOR PRODUCTS S2818.
Door Lock Actuator Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S2994 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Door Lock 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 S2994.
Fuel Injector Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GB REMANUFACTURING | 5187 | 🇺🇸 US 🇨🇦 CA | 40th Anniversary Edition or Platinum or SR Model or SV Model | 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.
This group shows a single part: GB REMANUFACTURING 5187.
Fuel Sending Unit Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S2994 | 🇺🇸 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 S2994.
Fuel Tank Pressure Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS | 2701085 | 🇺🇸 US 🇨🇦 CA | Includes Boot and Spring | 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 Nissan Maxima — WALKER PRODUCTS 2701085.
Ignition Coil Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S2327 | 🇺🇸 US 🇨🇦 CA | Gender: Female | View on Amazon |
| WALKER PRODUCTS | 2701085 | 🇺🇸 US 🇨🇦 CA | Includes Boot and Spring | View on Amazon |
| WELLS | 1P4056 | 🇺🇸 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.
3 Ignition Coil Connector parts for the 2021 Nissan Maxima come from 3 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and WELLS.
Part numbers include STANDARD MOTOR PRODUCTS S2327, WALKER PRODUCTS 2701085 and WELLS 1P4056.
Knock / Detonation Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S2907 | 🇺🇸 US 🇨🇦 CA | Includes O-Ring | 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.
This group shows a single part: STANDARD MOTOR PRODUCTS S2907.
Manifold Pressure (MAP) Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER | 2701085 | 🇺🇸 US 🇨🇦 CA | Evaporator Emission Control ConnectorAt Canister or At Fuel Tank Pressure Sensor | 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.
This group shows a single part: ULTRA-POWER 2701085.
Parking Aid Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S2844 | 🇺🇸 US 🇨🇦 CA | Gender: MaleWire Gauge (GA): 20 | View on Amazon |
| UNITED MOTOR PRODUCTS | CON211 | 🇺🇸 US 🇨🇦 CA | Fits Rearor Back | 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.
2 Parking Aid Sensor Connector parts for the 2021 Nissan Maxima come from 2 brands — STANDARD MOTOR PRODUCTS and UNITED MOTOR PRODUCTS.
Part numbers include STANDARD MOTOR PRODUCTS S2844 and UNITED MOTOR PRODUCTS CON211.
Radiator Fan Motor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S3220 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Radiator Fan 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 S3220.
Radio Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| METRA | AXBUCHNS | 🇺🇸 US 🇨🇦 CA | Radio Add-On CAM Wiring Harness | View on Amazon |
| METRA | AXBUCSNI406V | 🇺🇸 US 🇨🇦 CA | Radio Backup CAM/AUX Retention Wiring 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.
METRA supplies both parts for the 2021 Nissan Maxima.
Part numbers include METRA AXBUCHNS and METRA AXBUCSNI406V.
Speed Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S2458 | 🇺🇸 US 🇨🇦 CA | Connector Shape: OvalWire Gauge (GA): 18, 20 | View on Amazon |
| UNITED MOTOR PRODUCTS | CON205 | 🇺🇸 US 🇨🇦 CA | Transmission Output | View on Amazon |
This table covers the harness connectors at the 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.
2 Speed Sensor Connector parts are listed for the 2021 Nissan Maxima, from STANDARD MOTOR PRODUCTS and UNITED MOTOR PRODUCTS.
This group includes STANDARD MOTOR PRODUCTS S2458 and UNITED MOTOR PRODUCTS CON205.
Temperature Sender / Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER | 2701096 | 🇺🇸 US 🇨🇦 CA | Coolant Temperature Sensor Connector | View on Amazon |
| WALKER PRODUCTS | 2701096 | 🇺🇸 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.
2 Temperature Sender / Sensor Connector parts for the 2021 Nissan Maxima come from 2 brands — ULTRA-POWER and WALKER PRODUCTS.
This group includes ULTRA-POWER 2701096 and the remaining parts above.
Trailer Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TEKONSHA | 118676 | 🇺🇸 US 🇨🇦 CA | T-One Connector Assemblywith Upgraded Circuit Protected Modu Lite HD Module | 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.
One part is listed for the 2021 Nissan Maxima — TEKONSHA 118676.
Variable Valve Timing (VVT) Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | S2898 | 🇺🇸 US 🇨🇦 CA | 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.
This group shows a single part: STANDARD MOTOR PRODUCTS S2898.
Buying Electrical Connector Parts for a 2021 Nissan Maxima
On this vehicle, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules.
- Confirm you have the 3.5L V6 engine — every part on this page is matched to it.
- 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: Ignition Coil Connector and A/C Refrigerant Pressure Switch Connector .
Frequently Asked Questions
How many electrical connector parts fit the 2021 Nissan Maxima?
Our catalog currently lists 32 electrical connector parts for the 2021 Nissan Maxima across 23 subcategories and 9 brands, covering the 3.5L V6 engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical connector problems on a 2021 Nissan Maxima?
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 Nissan Maxima 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 Nissan Maxima?
Every part on this page is matched to the 3.5L V6 engine. 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 Nissan Maxima
Electrical Connector Parts for Other Nissan Maxima Years
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