14 Electrical connector parts are listed for the 2021 Mazda CX-5, in 12 part types, covering both the 2.5L L4 and the 2.5L L4 Turbocharged. Each one has a brand, a manufacturer part number and notes that say where it fits.
The connector system on the 2021 Mazda CX-5 supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. The largest groups are Parking Aid Sensor Connector (2 parts), Trailer Connector (2 parts) and Ambient Air Temperature Sensor Connector (1 part). The other 9 part types cover the remaining 9 parts.
The 2021 Mazda CX-5 was sold with both the 2.5L L4 and the 2.5L L4 Turbocharged. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Mazda CX-5 electrical connector parts are STANDARD MOTOR PRODUCTS (12 parts), CURT (1 part) and TEKONSHA (1 part).
Each part number listed for the 2021 Mazda CX-5 opens a page with every vehicle that part fits.
Ambient Air Temperature Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 | S2334 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Terminal Type: Blade | 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.
One part is listed for the 2021 Mazda CX-5 — STANDARD MOTOR PRODUCTS S2334.
Blower Motor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 | S3204 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | without Automatic Temperature Control | 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 Mazda CX-5 — STANDARD MOTOR PRODUCTS S3204.
Brake Light Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 | S2410 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: RectangleNumber of Splice Connectors Included: 4 | 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.
This group shows a single part: STANDARD MOTOR PRODUCTS S2410.
Fuel Injector Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 | S2544 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Harness Lengthinches: 13 | 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.
One part is listed for the 2021 Mazda CX-5 — STANDARD MOTOR PRODUCTS S2544.
Fuel Pump Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 | S2328 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: Rectangular, OvalTerminal Quantity: 2 | View on Amazon |
This table covers the harness connectors at the Fuel 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.
One part is listed for the 2021 Mazda CX-5 — STANDARD MOTOR PRODUCTS S2328.
Ignition Coil Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 | S3128 | 🇺🇸 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.
One part is listed for the 2021 Mazda CX-5 — STANDARD MOTOR PRODUCTS S3128.
Manifold Pressure (MAP) Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 | S2894 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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 Mazda CX-5 — STANDARD MOTOR PRODUCTS S2894.
Parking Aid Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 | HP3985 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Handypack | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 | S1415 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Number of Splice Connectors Included: 2 | 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.
STANDARD MOTOR PRODUCTS supplies both parts for the 2021 Mazda CX-5.
Listed part numbers: STANDARD MOTOR PRODUCTS HP3985 and STANDARD MOTOR PRODUCTS S1415.
Throttle Control Actuator Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 | 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.
One part is listed for the 2021 Mazda CX-5 — STANDARD MOTOR PRODUCTS S2817.
Trailer Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CURT Fits: 2.5L L4 | 56377 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Custom Wiring Harness4-Way Flat | View on Amazon |
| TEKONSHA Fits: 2.5L L4 | 118746 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
2 Trailer Connector parts for the 2021 Mazda CX-5 come from 2 brands — CURT and TEKONSHA.
This group includes CURT 56377 and TEKONSHA 118746.
Variable Valve Timing (VVT) Solenoid Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 | S2173 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Number of Splice Connectors Included: 2 | 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.
One part is listed for the 2021 Mazda CX-5 — STANDARD MOTOR PRODUCTS S2173.
Washer Pump Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.5L L4 | S3083 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: Rectangle | 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.
One part is listed for the 2021 Mazda CX-5 — STANDARD MOTOR PRODUCTS S3083.
Buying Electrical Connector Parts for a 2021 Mazda CX-5
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: Parking Aid Sensor Connector and Trailer Connector .
Frequently Asked Questions
How many electrical connector parts fit the 2021 Mazda CX-5?
Our catalog currently lists 14 electrical connector parts for the 2021 Mazda CX-5 across 12 subcategories and 3 brands, covering both the 2.5L L4 and the 2.5L L4 Turbocharged. Each part is matched to the engine(s) it fits.
Do electrical connector parts differ between 2021 Mazda CX-5 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 2021 Mazda CX-5?
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 Mazda CX-5 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 Mazda CX-5?
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 Mazda CX-5
Electrical Connector Parts for Other Mazda CX-5 Years
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