Sensors for BMW 3 Series E46 (1999-2005)

Clear BMW chassis

Please ensure your correct model is selected

When it comes to BMW and Mini, there is no shortage of sensors on your vehicle! Below you can find many of the crucial sensors that lead to error messages and check engine lights being displayed when a fault has occurred. Get your BMW/MINI back on the road with these Genuine BMW or high-quality OEM parts.

Sub-Categories

Sort By:

Oil Level Sensor - E46 E39 E60 E38 X3 X5 Z3 Z4 Z8
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
Bremmen Parts - Corporate Logo
T#:395203
Part#: 12617508003
In Stock
Sale - Save 30% $ 64.99

This product was last offered at the strikethrough price on
11-07-2026

$ 45.49 USD
Free Shipping on orders $49 and up
Sale - Save 30%
$ 64.99

This product was last offered at the strikethrough price on
11-07-2026

$ 45.49 USD
Free Shipping on orders $49 and up
This is the oil level sensor / sender for BMW E46 E39 E60 E38 X3 X5 Z3 Z4 Z8.When this part fails it will illuminate a check light on the dash which indicates it needs to be replaced. Includes o-ring. This item fits the following BMWs: 1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330xi M3 2008+ E90 BMW 335d 1999-2003 E39 BMW 528i 525i 530i M5 1998-2003 E39 BMW 540i 2004-2005 E60 BMW 525i 530i 1998-2001 E38 BMW 740i 740il 750il 2004-2006 E85 BMW X3 2.5i X3 3.0i 2000-2006 E53 BMW X5 3.0i 2000-2003 E53 BMW X5 4.4i X5 4.6is 1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i 2001-2002 Z3 BMW Z3 M Roadster Z3 M Coupe 2003-2006 Z4 BMW Z4 2.5i Z4 3.0i 2000-2003 E52 BMW Z8
Show More Show Less
Bremmen Crankshaft Position Sensor - E36 E46 E39 E60 X3 X5 Z3 Z4 ...
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
Bremmen Parts - Corporate Logo
T#:640146
Part#: 12141709616
Ships on Jan 11, 2027
Sale - Save 30% $ 40.99

This product was last offered at the strikethrough price on
11-07-2026

$ 28.69 USD
Free Shipping on orders $49 and up
Sale - Save 30%
$ 40.99

This product was last offered at the strikethrough price on
11-07-2026

$ 28.69 USD
Free Shipping on orders $49 and up
This is the crank shaft position sensor. It provides information for the ECU. A faulty sensor can cause issues with timing adjustment and limit performance and vehicle operation. Replace your sensor with a high-quality Bremmen sensor to restore peak performance.
Show More Show Less
Camshaft Position Sensor - E46 M3, Z4M, Z3M S54
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
Bremmen Parts - Corporate Logo
T#:36913379
Part#: 12147539171
In Stock
Sale - Save 30% $ 91.99

This product was last offered at the strikethrough price on
11-07-2026

$ 64.39 USD
Free Shipping on orders $49 and up
Sale - Save 30%
$ 91.99

This product was last offered at the strikethrough price on
11-07-2026

$ 64.39 USD
Free Shipping on orders $49 and up

The camshaft position sensor is essential for assisting the engine DME by monitoring the camshaft's position. The data from this sensor is key to optimizing ignition timing and ensuring smooth engine performance.

Often referred to as the CMP sensor, this component is crucial for the overall functionality of the powertrain. A failing camshaft position sensor can cause a range of issues, including engine stumbling, hesitation during acceleration, power loss, and even starting difficulties or complete failure to start.

Show More Show Less

Febi Camshaft Position Sensor - Intake - E39 E46 E53 E60 E83 Z3 Z4 ...
Includes o-ring.
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:591868
Part#: 12147539165
In Stock
$ 31.99 USD
Free Shipping on orders $49 and up
$ 31.99 USD
Free Shipping on orders $49 and up

Bremi - Corporate Logo
T#:34683819
Part#: 12147539165
In Stock
$ 48.99

This product was last offered at the strikethrough price on
07-15-2026

$ 44.99 USD
Free Shipping on orders $49 and up
$ 44.99 USD
Free Shipping on orders $49 and up

Bremi Camshaft Position Sensor - Intake is an essential component for optimizing your BMW’s engine timing and performance. Manufactured by Bremi and available through Turner Motorsport, this high-quality intake camshaft position sensor precisely monitors the camshaft’s rotation and communicates critical data to the engine control unit. By ensuring accurate timing for the intake valves, this sensor helps maintain optimal fuel efficiency, smooth idling, and reduces emissions. Replacing a faulty camshaft position sensor can prevent common engine issues such as misfires, stalling, or rough idling.

The Bremi Camshaft Position Sensor - Intake meets OEM specifications, providing a reliable, durable solution that’s designed to withstand high temperatures and vibration for long-lasting performance.

Benefits:

Improves Engine Timing: Provides precise timing data for smooth, responsive engine performance Enhances Fuel Efficiency: Optimizes fuel use, saving on fuel costs and reducing environmental impact Reduces Emissions: Helps maintain cleaner combustion and lowers vehicle emissions Prevents Engine Issues: Minimizes risk of misfires, rough idling, and stalling, prolonging engine life Easy to Install: Direct fit for BMW models, making replacement quick and hassle-free Bremi Camshaft Position Sensor - Intake is the perfect choice to maintain your BMW’s high performance and reliability.

Show More Show Less
Bremmen Camshaft Position Sensor - E46 E39 E60 E83 Z3 Z4
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
Bremmen Parts - Corporate Logo
T#:640145
Part#: 12147518628
Ships on Dec 16, 2026
Sale - Save 20% $ 32.99

This product was last offered at the strikethrough price on
11-07-2026

$ 26.39 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 32.99

This product was last offered at the strikethrough price on
11-07-2026

$ 26.39 USD
Free Shipping on orders $49 and up
A bad cam sensor can cause a variety of problems from hard starting to stalling at low speeds. Cam sensor replacement has been known to cure many drivability issues

Febi Camshaft Position Sensor
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:368897
Part#: 12147518628
Ships in 2 Business Days
$ 48.99

This product was last offered at the strikethrough price on
09-01-2026

$ 40.99 USD
Free Shipping on orders $49 and up
$ 40.99 USD
Free Shipping on orders $49 and up
A faulty cam sensor can lead to issues like difficulty starting and stalling at low speeds. Replacing the cam sensor often resolves many drivability problems. Requires O-ring #12141748398 (not included).
Show More Show Less
3 Pin Connector
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:33412924
Part#: 12521433917
Ships on Jan 27, 2027
Sale - Save 14% $ 8.99

This product was last offered at the strikethrough price on
10-28-2026

$ 7.69 USD
Free Shipping on orders $49 and up
Sale - Save 14%
$ 8.99

This product was last offered at the strikethrough price on
10-28-2026

$ 7.69 USD
Free Shipping on orders $49 and up

Includes connector housing with terminals and seals. Commonly used for the camshaft position sensor.

ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need.

Each connector includes an additional terminal in case one becomes lost or damaged during installation.

*OEM cross reference PN# 12521433917 - Commonly used for the camshaft position sensor.

Please reference the original part number from the existing connector to confirm fitment, before ordering.

Suggested tools:

Suggested crimping pliers: T#387193
Wire De-pin tools:
12pc De-Pin Tool Set - T#386379
23pc De-Pin Tool Set - T#641943

Show More Show Less

3 Pin Connector
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:33412925
Part#: 12521433915
In Stock
Sale - Save 40% $ 10.99

This product was last offered at the strikethrough price on
11-07-2026

$ 6.59 USD
Free Shipping on orders $49 and up
Sale - Save 40%
$ 10.99

This product was last offered at the strikethrough price on
11-07-2026

$ 6.59 USD
Free Shipping on orders $49 and up

Includes connector housing with terminals and seals. Commonly used for the engine oil level sensor.

ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need.

Each connector includes an additional terminal in case one becomes lost or damaged during installation.

*OEM cross reference PN# 12521433915 - Commonly used for the engine oil level sensor.

Please reference the original part number from the existing connector to confirm fitment, before ordering.

Suggested tools:

Suggested crimping pliers: T#387193
Wire De-pin tools:
12pc De-Pin Tool Set - T#386379
23pc De-Pin Tool Set - T#641943

Show More Show Less

LK-2M 2 Pin Connector Package
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:40072446
Part#: LK2M
In Stock
Sale - Save 34% $ 6.99

This product was last offered at the strikethrough price on
11-07-2026

$ 4.61 USD
Free Shipping on orders $49 and up
Sale - Save 34%
$ 6.99

This product was last offered at the strikethrough price on
11-07-2026

$ 4.61 USD
Free Shipping on orders $49 and up

Includes connector housing with terminals and seals. Commonly used for the engine oil pressure switch.

ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need.

Each connector includes an additional terminal in case one becomes lost or damaged during installation.

Suggested tools:

Suggested crimping pliers: T#387193
Wire De-pin tools:
12pc De-Pin Tool Set - T#386379
23pc De-Pin Tool Set - T#641943

Show More Show Less
3 Pin Connector
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:33412947
Part#: 12521433916
In Stock
Sale - Save 40% $ 10.99

This product was last offered at the strikethrough price on
11-07-2026

$ 6.59 USD
Free Shipping on orders $49 and up
Sale - Save 40%
$ 10.99

This product was last offered at the strikethrough price on
11-07-2026

$ 6.59 USD
Free Shipping on orders $49 and up

Includes connector housing with terminals and seals. Commonly used for the crankshaft position sensor.

ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need.

Each connector includes an additional terminal in case one becomes lost or damaged during installation.

*OEM cross reference PN# 12521433916 - Commonly used for the crankshaft position sensor.

Please reference the original part number from the existing connector to confirm fitment, before ordering.

Suggested tools:

Suggested crimping pliers: T#387193
Wire De-pin tools:
12pc De-Pin Tool Set - T#386379
23pc De-Pin Tool Set - T#641943

Show More Show Less
Bremmen Parts Outdoor Temperature Sensor / Probe - 65816936953 ...
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
Bremmen Parts - Corporate Logo
T#:30728992
Part#: 65816936953
In Stock
Sale - Save 30% $ 13.99

This product was last offered at the strikethrough price on
11-07-2026

$ 9.79 USD
Free Shipping on orders $49 and up
Sale - Save 30%
$ 13.99

This product was last offered at the strikethrough price on
11-07-2026

$ 9.79 USD
Free Shipping on orders $49 and up


3 Pin Connector
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:33412918
Part#: 12521732596
In Stock
Sale - Save 40% $ 10.99

This product was last offered at the strikethrough price on
11-07-2026

$ 6.59 USD
Free Shipping on orders $49 and up
Sale - Save 40%
$ 10.99

This product was last offered at the strikethrough price on
11-07-2026

$ 6.59 USD
Free Shipping on orders $49 and up

Includes connector housing with terminals and seals. Commonly used for the camshaft position sensor.

ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need.

Each connector includes an additional terminal in case one becomes lost or damaged during installation.

*OEM cross reference PN# 12521732596 - Commonly used for the camshaft position sensor.

Please reference the original part number from the existing connector to confirm fitment, before ordering.

Suggested tools:

Suggested crimping pliers: T#387193
Wire De-pin tools:
12pc De-Pin Tool Set - T#386379
23pc De-Pin Tool Set - T#641943

Show More Show Less
Febi Outdoor Temperature Sensor / Probe
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:382731
Part#: 65816936953
Ships in 2 Business Days
$ 20.79

This product was last offered at the strikethrough price on
10-21-2026

$ 20.00 USD
Free Shipping on orders $49 and up
$ 20.00 USD
Free Shipping on orders $49 and up
Common fix for incorrect OBC temperature readings
Victor Reinz - Corporate Logo
T#:13233505
Part#: 12141402705
Ships in 2 Business Days
$ 1.49

This product was last offered at the strikethrough price on
08-26-2026

$ 1.28 USD
Free Shipping on orders $49 and up
$ 1.28 USD
Free Shipping on orders $49 and up
This O-Ring can sometimes leak at the bottom of your engine and need to be replaced. Fits around the head of the lower crankshaft sensor and provides a connection point.

2 Pin Connector
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:33412928
Part#: 12521427615
In Stock
Sale - Save 35% $ 7.99

This product was last offered at the strikethrough price on
11-07-2026

$ 5.19 USD
Free Shipping on orders $49 and up
Sale - Save 35%
$ 7.99

This product was last offered at the strikethrough price on
11-07-2026

$ 5.19 USD
Free Shipping on orders $49 and up
Includes connector housing with terminals and seals. Commonly used for the engine oil pressure switch. ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need. Each connector includes an additional terminal in case one becomes lost or damaged during installation. *OEM cross reference PN# 12521427615 - Commonly used for the engine oil pressure switch. Please reference the original part number from the existing connector to confirm fitment, before ordering. Suggested tools: Suggested crimping pliers: T#387193 Wire De-pin tools: 12pc De-Pin Tool Set - T#386379 23pc De-Pin Tool Set - T#641943
Show More Show Less

Febi - Corporate Logo
T#:56507847
Part#: 12141709616
Special Order: No Guaranteed ETA
New Item
$ 14.99 USD
Free Shipping on orders $49 and up
Keep your BMW’s engine management system operating at peak performance with this replacement crankshaft position sensor from Febi Bilstein.