The 2021 BMW M240I has 31 ignition parts with verified fitment on this page — 5 part types and 17 brands, covering the 3.0L L6 Turbocharged engine. Each part includes a manufacturer part number and application notes.
On the 2021 BMW M240I, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. 24 parts of the 31 listed are Ignition Coil (11 parts), Camshaft Position Sensor (7 parts) and Crankshaft Position Sensor (6 parts). The other 2 part types cover the remaining 7 parts.
The 2021 BMW M240I came with a single engine, the 3.0L L6 Turbocharged, and every part is verified against it.
17 brands supply ignition parts for the 2021 BMW M240I, led by WALKER PRODUCTS (3 parts), ASTEMO / HITACHI (3 parts) and STANDARD MOTOR PRODUCTS (3 parts), plus 14 more brands. Quality grades include Standard Replacement, Economy and Iridium.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 BMW M240I. 7 parts have it, including HOLSTEIN 2CAM0303 (Camshaft Position Sensor) and ASTEMO / HITACHI CPS0177 (Crankshaft Position Sensor). Each part number opens a page with every vehicle that part fits.
Camshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Popular | 2CAM0303 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS Popular | 2351285 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Sensor OnlyIncludes Seal | View on Amazon |
| ASTEMO / HITACHI | CPS0160 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| HELLA | 009121011 | 🇺🇸 US 🇨🇦 CA | 3-Pin ConnectorIncludes Seal | View on Amazon |
| HELLA | 009168571 | 🇺🇸 US 🇨🇦 CA | 3-Pin ConnectorIncludes Seal | View on Amazon |
| STANDARD MOTOR PRODUCTS | PC1054 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | M240i Base Model | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI | SS12339 | 🇺🇸 US 🇨🇦 CA | M240i Base Model | 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.
7 Camshaft Position Sensor parts for the 2021 BMW M240I come from 6 brands — HELLA, HOLSTEIN, WALKER PRODUCTS and 3 other brands. The "Popular" part is HOLSTEIN 2CAM0303.
The Economy section lists 1 option from HOLSTEIN — the catalog's value-priced group. HOLSTEIN 2CAM0303 is listed in this group.
In the Standard Replacement grade, HELLA, WALKER PRODUCTS, ASTEMO / HITACHI and 1 other brand supply 5 parts: built to original-equipment specification. A representative part number is WALKER PRODUCTS 2351285.
1 further part sits outside the graded sections, with the same engine-level match.
This group includes HOLSTEIN 2CAM0303, WALKER PRODUCTS 2351285 and ASTEMO / HITACHI CPS0160 and the remaining parts above.
Crankshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN | 2CRK0548 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ASTEMO / HITACHI Popular | CPS0177 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| DELPHI Popular | SS12009 | 🇺🇸 US 🇨🇦 CA | M240i Base Model | View on Amazon |
| STANDARD MOTOR PRODUCTS | PC983 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WALKER PRODUCTS | 2352069 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Sensor OnlyConnector Gender: Female | View on Amazon |
| WELLS | 5S15201 | 🇺🇸 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.
6 Crankshaft Position Sensor parts for the 2021 BMW M240I come from 6 brands — HOLSTEIN, ASTEMO / HITACHI, DELPHI and 3 other brands. The "Popular" part is ASTEMO / HITACHI CPS0177.
The Economy section: 1 option from HOLSTEIN. HOLSTEIN 2CRK0548 is listed in this group.
Standard Replacement: 5 parts, from ASTEMO / HITACHI, DELPHI, STANDARD MOTOR PRODUCTS and 2 other brands. A representative part number is ASTEMO / HITACHI CPS0177.
This group includes ASTEMO / HITACHI CPS0177, HOLSTEIN 2CRK0548 and DELPHI SS12009 and the remaining parts above.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRENCO | 368369 | 🇺🇸 US 🇨🇦 CA | Includes 36-2176 Boot Kit | View on Amazon |
| SPECTRA PREMIUM | C983 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits M240i Base Modelor M240i xDriveIgnition Coil Mounts to Cylinder Head | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ASTEMO / HITACHI Popular | IGC0189 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Coil on Plug | View on Amazon |
| DELPHI Popular | GN10882 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH Popular | 0986221124 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| BECK/ARNLEY | 1788564 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| DENSO | 6739208 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Direct Ignition Coil or Coil On Plug | View on Amazon |
| NGK | 49061 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS | UF750 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| UNITED MOTOR PRODUCTS | COP648 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WALKER PRODUCTS | 9212347 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Single Coil | 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.
11 Ignition Coil parts for the 2021 BMW M240I come from 11 brands — PRENCO, SPECTRA PREMIUM, ASTEMO / HITACHI and 8 other brands. The "Popular" part is ASTEMO / HITACHI IGC0189.
The Economy section: 2 options from PRENCO and SPECTRA PREMIUM. PRENCO 368369 is listed in this group.
In the Premium grade, ASTEMO / HITACHI and DELPHI supply 2 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is ASTEMO / HITACHI IGC0189.
Standard Replacement: 7 parts, from BOSCH, BECK/ARNLEY, DENSO and 4 other brands. A representative part number is BOSCH 0986221124.
Spark Plug
Double Platinum (lasts up to 3x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | 8169 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | OE Fine Wire Double PlatinumPre-Set Gap: 0.031" | View on Amazon |
Iridium (lasts up to 4x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | 9787 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | OE Fine Wire Double Iridium | View on Amazon |
| CHAMPION | 9425 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IridiumPre-Set Gap: 0.032" | View on Amazon |
| NGK | 94201 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Laser Iridium High IgnitabilityPre-Set Gap: 0.030" | View on Amazon |
This table covers the spark plugs for this engine. Typical signs include misfire under load, rough idle, or a flashing check-engine light. Verify the gap even on pre-gapped plugs, and replace coil boots that come off a high-mileage engine.
4 Spark Plug parts are listed for the 2021 BMW M240I, from BOSCH, CHAMPION and NGK.
In the Double Platinum (lasts up to 3x longer than Copper / Nickel) grade, BOSCH supplies 1 part: grouped under the catalog's "Double Platinum (lasts up to 3x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. A representative part number is BOSCH 8169.
The Iridium (lasts up to 4x longer than Copper / Nickel) section lists 3 options from BOSCH, CHAMPION and NGK — grouped under the catalog's "Iridium (lasts up to 4x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. BOSCH 9787 is listed in this group.
This group includes BOSCH 8169, BOSCH 9787 and CHAMPION 9425 and the remaining parts above.
Spark Plug Tube Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 0396687 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| ELRING | 655581 | 🇲🇽 MX | innerCoupe | View on Amazon |
| MAHLE / CLEVITE | B33795 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Molded Rubber | View on Amazon |
This table covers the seals at the Spark Plug Tube. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
3 Spark Plug Tube Seal parts for the 2021 BMW M240I come from 3 brands — BECK/ARNLEY, ELRING and MAHLE / CLEVITE.
Part numbers include BECK/ARNLEY 0396687, ELRING 655581 and MAHLE / CLEVITE B33795.
Buying Ignition Parts for a 2021 BMW M240I
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 3.0L L6 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 M240I?
Our catalog currently lists 31 ignition parts for the 2021 BMW M240I across 5 subcategories and 17 brands, covering the 3.0L L6 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 2021 BMW M240I?
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 spark-plug gap is listed for the 2021 BMW M240I?
Notes on this page include pre-set gaps of 0.030", 0.031" and 0.032". Still verify against spec — even “pre-gapped” plugs should be checked before they go in.
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 M240I 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 M240I?
Every part on this page is matched to the 3.0L L6 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 M240I
Ignition Parts for Other BMW M240I Years
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