11 Ignition parts are listed for the 2021 BMW M850I, in 3 part types, covering the 4.4L V8 Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
The ignition system on the 2021 BMW M850I delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. All 11 listed parts are Ignition Coil (5 parts), Camshaft Position Sensor (3 parts) and Crankshaft Position Sensor (3 parts).
Every part on this page is matched to the 4.4L V8 Turbocharged — the only engine offered in the 2021 BMW M850I.
The most listed brands for 2021 BMW M850I ignition parts are WALKER PRODUCTS (2 parts), WELLS (2 parts) and HOLSTEIN (2 parts), plus 5 more brands. Quality grades include Standard Replacement, Economy and Premium.
1 part on this 2021 BMW M850I page carries a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — HOLSTEIN 2IGC0102 (Ignition Coil). Click any part number to see every vehicle that part fits.
Camshaft Position Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 009168571 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 3-Pin ConnectorIncludes Seal | View on Amazon |
| WALKER PRODUCTS | 2351540 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Sensor Only | View on Amazon |
| WELLS | 5S16928 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits M850i xDrive Base Modelor M850i xDrive Gran Coupe | View on Amazon |
This table covers the sensors that report camshaft position to the ECU. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor.
3 Camshaft Position Sensor parts are listed for the 2021 BMW M850I, from HELLA, WALKER PRODUCTS and WELLS.
Part numbers include HELLA 009168571, WALKER PRODUCTS 2351540 and WELLS 5S16928.
Crankshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN | 2CRK0712 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS | 2352068 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Sensor Only | View on Amazon |
| WELLS | 5S16172 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the sensors that report crankshaft position and engine speed. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor.
3 Crankshaft Position Sensor parts are listed for the 2021 BMW M850I, from HOLSTEIN, WALKER PRODUCTS and WELLS.
In the Economy grade, HOLSTEIN supplies 1 part: the catalog's value-priced group. A representative part number is HOLSTEIN 2CRK0712.
The Standard Replacement section lists 2 options from WALKER PRODUCTS and WELLS — built to original-equipment specification. WALKER PRODUCTS 2352068 is listed in this group.
Listed part numbers: HOLSTEIN 2CRK0712, WALKER PRODUCTS 2352068 and WELLS 5S16172.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Popular | 2IGC0102 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI | GN11142 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 1788622 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | M850i xDrive Base Model | View on Amazon |
| BOSCH | 0986221148 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS | UF883 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the coils that fire each spark plug. Typical signs include a misfire that follows one cylinder, a snap in damp weather, or a coil that is swollen or cracked. Swap a suspect coil with a neighbor to confirm, then replace boots that tore on the way off.
5 Ignition Coil parts are listed for the 2021 BMW M850I, from HOLSTEIN, DELPHI, BECK/ARNLEY and 2 other brands. HOLSTEIN 2IGC0102 carries the "Popular" badge.
Economy: 1 part, from HOLSTEIN. A representative part number is HOLSTEIN 2IGC0102.
The Premium section lists 1 option from DELPHI — a step above OE specification in materials, tolerances or warranty terms. DELPHI GN11142 is listed in this group.
The Standard Replacement section: 3 options from BECK/ARNLEY, BOSCH and STANDARD MOTOR PRODUCTS. BECK/ARNLEY 1788622 is listed in this group.
This group includes HOLSTEIN 2IGC0102, DELPHI GN11142 and BECK/ARNLEY 1788622 and the remaining parts above.
Buying Ignition Parts for a 2021 BMW M850I
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 4.4L V8 Turbocharged 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, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
- 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 and Camshaft Position Sensor .
Frequently Asked Questions
How many ignition parts fit the 2021 BMW M850I?
Our catalog currently lists 11 ignition parts for the 2021 BMW M850I across 3 subcategories and 8 brands, covering the 4.4L V8 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 2021 BMW M850I?
Common symptoms include misfires under load, rough idle, flashing check-engine light, or poor starting in damp weather. 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, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
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 M850I 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 M850I?
Every part on this page is matched to the 4.4L V8 Turbocharged engine. Then gap matters even on “pre-gapped” plugs — verify against spec, and replace coil boots when they come off a high-mileage engine. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 BMW M850I
Ignition Parts for Other BMW M850I Years
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