The 2021 BMW 840I has 30 ignition parts with verified fitment on this page — 4 part types and 16 brands, covering the 3.0L L6 Turbocharged engine. Each part includes a manufacturer part number and application notes.
On the 2021 BMW 840I, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. Most of the listed parts are Camshaft Position Sensor (11 parts), Ignition Coil (11 parts) and Crankshaft Position Sensor (6 parts). The other 1 part type covers the remaining 2 parts.
Every part on this page is matched to the 3.0L L6 Turbocharged — the only engine offered in the 2021 BMW 840I.
The most listed brands for 2021 BMW 840I ignition parts are STANDARD MOTOR PRODUCTS (5 parts), WALKER PRODUCTS (3 parts) and DELPHI (3 parts), plus 13 more brands. Quality grades include Standard Replacement, Economy and Premium.
7 parts on this 2021 BMW 840I page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including STANDARD MOTOR PRODUCTS PC770T (Camshaft Position Sensor) and DELPHI SS12009 (Crankshaft Position Sensor). Click any part number to see every vehicle that part fits.
Camshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | PC770T | 🇺🇸 US | T-Series | View on Amazon |
| HOLSTEIN | 2CAM0303 | 🇺🇸 US | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | PC770 | 🇺🇸 US | Connector Gender: Female | View on Amazon |
| WALKER PRODUCTS Popular | 2351285 | 🇺🇸 US | Sensor OnlyIncludes Seal | View on Amazon |
| ASTEMO / HITACHI | CPS0160 | 🇺🇸 US | 840i Base Model or 840i xDrive Base Model | View on Amazon |
| HELLA | 009121011 | 🇺🇸 US | 3-Pin ConnectorIncludes Seal | View on Amazon |
| HELLA | 009168571 | 🇺🇸 US | 3-Pin ConnectorIncludes Seal | View on Amazon |
| STANDARD MOTOR PRODUCTS | PC1054 | 🇺🇸 US | 840i Gran Coupe or 840i xDrive Base Model or 840i xDrive Gran Coupe | View on Amazon |
| ÜRO PARTS | 13627633958 | 🇺🇸 US | View on Amazon | |
| WELLS | 5S16928 | 🇺🇸 US | 840i xDrive Base Model | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI | SS12339 | 🇺🇸 US | 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.
11 Camshaft Position Sensor parts are listed for the 2021 BMW 840I, from STANDARD MOTOR PRODUCTS, HELLA, HOLSTEIN and 5 other brands. STANDARD MOTOR PRODUCTS PC770T carries the "Popular" badge.
In the Economy grade, STANDARD MOTOR PRODUCTS and HOLSTEIN supply 2 parts: the catalog's value-priced group. A representative part number is STANDARD MOTOR PRODUCTS PC770T.
The Standard Replacement section lists 8 options from STANDARD MOTOR PRODUCTS, HELLA, WALKER PRODUCTS and 3 other brands — built to original-equipment specification. STANDARD MOTOR PRODUCTS PC770 is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Crankshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SPECTRA PREMIUM | S10472 | 🇺🇸 US | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI Popular | SS12009 | 🇺🇸 US | View on Amazon | |
| KARLYN / BREMI / STI | 60468 | 🇺🇸 US | Bremi | View on Amazon |
| STANDARD MOTOR PRODUCTS | PC1197 | 🇺🇸 US | View on Amazon | |
| WALKER PRODUCTS | 2352069 | 🇺🇸 US | Sensor OnlyConnector Gender: Female | View on Amazon |
| WELLS | 5S16173 | 🇺🇸 US | 840i Base Model or 840i xDrive Base Model | 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 are listed for the 2021 BMW 840I, from SPECTRA PREMIUM, DELPHI, KARLYN / BREMI / STI and 3 other brands. DELPHI SS12009 carries the "Popular" badge.
Economy: 1 part, from SPECTRA PREMIUM. A representative part number is SPECTRA PREMIUM S10472.
The Standard Replacement section: 5 options from DELPHI, KARLYN / BREMI / STI, STANDARD MOTOR PRODUCTS and 2 other brands. DELPHI SS12009 is listed in this group.
Listed part numbers: DELPHI SS12009, SPECTRA PREMIUM S10472 and KARLYN / BREMI / STI 60468, plus the other 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 | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ASTEMO / HITACHI Popular | IGC0189 | 🇺🇸 US | 840i Base Model or 840i xDrive Base ModelCoil On Plug | View on Amazon |
| DELPHI Popular | GN10882 | 🇺🇸 US | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH Popular | 0986221124 | 🇺🇸 US | View on Amazon | |
| BECK/ARNLEY | 1788564 | 🇺🇸 US | View on Amazon | |
| DENSO | 6739208 | 🇺🇸 US | Direct Ignition Coil or Coil On Plug | View on Amazon |
| NGK | 49061 | 🇺🇸 US | View on Amazon | |
| STANDARD MOTOR PRODUCTS | UF750 | 🇺🇸 US | View on Amazon | |
| UNITED MOTOR PRODUCTS | COP648 | 🇺🇸 US | View on Amazon | |
| WALKER PRODUCTS | 9212347 | 🇺🇸 US | 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 are listed for the 2021 BMW 840I, from PRENCO, SPECTRA PREMIUM, ASTEMO / HITACHI and 8 other brands. ASTEMO / HITACHI IGC0189 carries the "Popular" badge.
Economy: 2 parts, from PRENCO and SPECTRA PREMIUM. A representative part number is PRENCO 368369.
The Premium section lists 2 options from ASTEMO / HITACHI and DELPHI — a step above OE specification in materials, tolerances or warranty terms. ASTEMO / HITACHI IGC0189 is listed in this group.
The Standard Replacement section: 7 options from BOSCH, BECK/ARNLEY, DENSO and 4 other brands. BOSCH 0986221124 is listed in this group.
Spark Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | 9787 | 🇺🇸 US | OE Fine Wire Double Iridium | View on Amazon |
| NGK | 96206 | 🇺🇸 US | Laser Iridium High Ignitability | 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.
2 Spark Plug parts for the 2021 BMW 840I come from 2 brands — BOSCH and NGK.
Listed part numbers: BOSCH 9787 and NGK 96206.
Buying Ignition Parts for a 2021 BMW 840I
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: Camshaft Position Sensor and Ignition Coil .
Frequently Asked Questions
How many ignition parts fit the 2021 BMW 840I?
Our catalog currently lists 30 ignition parts for the 2021 BMW 840I across 4 subcategories and 16 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 840I?
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 840I?
Notes on this page include a 0.030" pre-set gap. 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 840I 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 840I?
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 840I
Ignition Parts for Other BMW 840I 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.