This page lists 14 electrical switch & relay parts for the 2021 BMW X7, across 5 part types, covering both the 3.0L L6 Turbocharged and the 4.4L V8 Turbocharged. Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 BMW X7, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. Most of the listed parts are Brake Light Switch (5 parts), A/C Refrigerant Pressure Switch (3 parts) and Oil Pressure Sender / Switch (3 parts). The other 2 part types cover the remaining 3 parts.
The 2021 BMW X7 was sold with both the 3.0L L6 Turbocharged and the 4.4L V8 Turbocharged. All 14 parts on this page fit every engine.
The most listed brands for 2021 BMW X7 electrical switch & relay parts are WELLS (4 parts), STANDARD MOTOR PRODUCTS (2 parts) and FOUR SEASONS (1 part), plus 7 more brands. Quality grades include Standard Replacement and Economy.
1 part on this 2021 BMW X7 page carries a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — STANDARD MOTOR PRODUCTS SLS323 (Brake Light Switch). Click any part number to see every vehicle that part fits.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS Fits: all 2021 X7 engines | 20997 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pressure Switch | View on Amazon |
| REIN Fits: all 2021 X7 engines | ACS0243P | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| UAC Fits: all 2021 X7 engines | SW11170C | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Pressure Transducer | View on Amazon |
This table covers the pressure switches on the A/C circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
3 A/C Refrigerant Pressure Switch parts for the 2021 BMW X7 come from 3 brands — FOUR SEASONS, REIN and UAC. Every part fits both the 3.0L L6 Turbocharged and the 4.4L V8 Turbocharged.
This group includes FOUR SEASONS 20997, REIN ACS0243P and UAC SW11170C.
Brake Light Switch
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Fits: all 2021 X7 engines | 2BLS0033 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: all 2021 X7 engines | SLS323T | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | T-Series | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: all 2021 X7 engines | SLS323 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| BECK/ARNLEY Fits: all 2021 X7 engines | 2012696 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| HELLA Fits: all 2021 X7 engines | 010966401 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 4-pin connector | View on Amazon |
This table covers the pedal-mounted switch that turns on the brake lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
5 Brake Light Switch parts for the 2021 BMW X7 come from 4 brands — STANDARD MOTOR PRODUCTS, HOLSTEIN, BECK/ARNLEY and 1 other brand. The "Popular" part is STANDARD MOTOR PRODUCTS SLS323. Every part fits both the 3.0L L6 Turbocharged and the 4.4L V8 Turbocharged.
The Economy section lists 2 options from HOLSTEIN and STANDARD MOTOR PRODUCTS — the catalog's value-priced group. HOLSTEIN 2BLS0033 is listed in this group.
In the Standard Replacement grade, STANDARD MOTOR PRODUCTS, BECK/ARNLEY and HELLA supply 3 parts: built to original-equipment specification. A representative part number is STANDARD MOTOR PRODUCTS SLS323.
Listed part numbers: STANDARD MOTOR PRODUCTS SLS323, HOLSTEIN 2BLS0033 and STANDARD MOTOR PRODUCTS SLS323T, plus the other parts above.
Headlamp Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: all 2021 X7 engines | 1S18231 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with LED Fog Lightswith Night Vision Camera | View on Amazon |
| WELLS Fits: all 2021 X7 engines | 1S18237 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Fog Lightswithout Night Vision Camera | View on Amazon |
This table covers the column or dash switches that control the exterior lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
WELLS supplies both parts for the 2021 BMW X7. All of them fit every engine offered in the 2021 X7.
Listed part numbers: WELLS 1S18231 and WELLS 1S18237.
Ignition Starter Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: all 2021 X7 engines | 1S17908 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Push Button Switch, with Class Package | View on Amazon |
This table covers the ignition switches that feed the starter circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 2021 BMW X7 — WELLS 1S17908.
Oil Pressure Sender / Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FACET Fits: all 2021 X7 engines | 250015 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| GPD Fits: all 2021 X7 engines | 1816559 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Light | View on Amazon |
| WELLS Fits: all 2021 X7 engines | 1S16103 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the senders and switches that report oil pressure to the gauge or lamp. Typical signs include a lamp that stays on, or a gauge that never moves. Confirm power and ground at the connector before replacing the sender or switch.
3 Oil Pressure Sender / Switch parts for the 2021 BMW X7 come from 3 brands — FACET, GPD and WELLS. Every part fits both the 3.0L L6 Turbocharged and the 4.4L V8 Turbocharged.
Listed part numbers: FACET 250015, GPD 1816559 and WELLS 1S16103.
Buying Electrical Switch & Relay Parts for a 2021 BMW X7
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- You do not need to pick an engine: every electrical switch & relay part on this page fits both the 3.0L L6 Turbocharged and the 4.4L V8 Turbocharged.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Brake Light Switch and A/C Refrigerant Pressure Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2021 BMW X7?
Our catalog currently lists 14 electrical switch & relay parts for the 2021 BMW X7 across 5 subcategories and 10 brands, covering both the 3.0L L6 Turbocharged and the 4.4L V8 Turbocharged. Each part is matched to the engine(s) it fits.
Do electrical switch & relay parts differ between 2021 BMW X7 engines?
No. On this page every electrical switch & relay part fits both the 3.0L L6 Turbocharged and the 4.4L V8 Turbocharged. You do not need to pick an engine to choose the right row — use the notes for position and trim.
What are the signs of electrical switch & relay problems on a 2021 BMW X7?
Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. 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, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
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 X7 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 X7?
Every part on this page already fits both the 3.0L L6 Turbocharged and the 4.4L V8 Turbocharged. Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 BMW X7
Electrical Switch & Relay Parts for Other BMW X7 Years
Switch vehicle or jump to a subcategory
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.