The 2021 BMW X5 has 6 electrical connector parts with verified fitment on this page — 5 part types and 4 brands, covering all 3 engine options (3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged and 4.4L V8 Turbocharged). Each part includes a manufacturer part number and application notes.
The connector system on the 2021 BMW X5 supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. The largest groups are Ambient Air Temperature Sensor Connector (2 parts), Accelerator Pedal Position Sensor Connector (1 part) and Knock / Detonation Sensor Connector (1 part). The other 2 part types cover the remaining 2 parts.
The 2021 BMW X5 was sold with 3 engines. 5 parts fit every engine; the other 1 is engine-specific. Each part shows which engine(s) it fits.
4 brands supply electrical connector parts for the 2021 BMW X5, led by STANDARD MOTOR PRODUCTS (3 parts), HOLSTEIN (1 part) and WALKER PRODUCTS (1 part), plus 1 more brand.
Each part number listed for the 2021 BMW X5 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 X5 engines | S1057 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: OvalLength (In): 1 | 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 S1057.
Ambient Air Temperature Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: all 2021 X5 engines | 2HAR0036 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Includes ABS Wheel Speed Sensor Wire Harness | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 2021 X5 engines | S1686 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: OvalBlack | 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.
2 Ambient Air Temperature Sensor Connector parts for the 2021 BMW X5 come from 2 brands — HOLSTEIN and STANDARD MOTOR PRODUCTS. Every part fits all 3 engine options (3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged and 4.4L V8 Turbocharged).
Part numbers include HOLSTEIN 2HAR0036 and STANDARD MOTOR PRODUCTS S1686.
Knock / Detonation Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS Fits: 3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged | 2701034 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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: WALKER PRODUCTS 2701034.
Temperature Sender / Sensor Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 2021 X5 engines | S2860 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Shape: OvalGauge: 16 Gauge | 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 S2860.
Trailer Brake Switch Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TEKONSHA Fits: all 2021 X5 engines | 3037P | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 2-Plug Harness (Plugs Directly Into Your Vehicle and Brake Control) | View on Amazon |
This table covers the harness connectors at the Trailer Brake 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: TEKONSHA 3037P.
Buying Electrical Connector Parts for a 2021 BMW X5
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: Ambient Air Temperature Sensor Connector and Accelerator Pedal Position Sensor Connector .
Frequently Asked Questions
How many electrical connector parts fit the 2021 BMW X5?
Our catalog currently lists 6 electrical connector parts for the 2021 BMW X5 across 5 subcategories and 4 brands, covering all 3 engine options (3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged and 4.4L V8 Turbocharged). Each part is matched to the engine(s) it fits.
Do electrical connector parts differ between 2021 BMW X5 engines?
Some do. 5 parts fit every engine; the other 1 is 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 BMW X5?
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 BMW X5 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 BMW X5?
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 BMW X5
Electrical Connector Parts for Other BMW X5 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.