Home
Engine Parts
Electrical System

BMW Electrical Sensors, Switches, & Relays for BMW 3 Series E46 (1999-2005)

Clear BMW chassis

Electrical gremlins can be very frustrating. Luckily your BMW's electrical system is better than most, even if it's 25 years old. Here you will find electrical relays, sensors, switches, and modules for the engine, camshaft, and crankshaft. Our parts are OEM, Genuine BMW, or approved aftermarket brands that we have an excellent track record with. There is no middle ground with electrical parts - it either works perfectly or not. And there's nothing more frustrating than a new part that fails right out of the box. So it's important to choose quality replacement parts over a cheap but faulty piece.

Sub-Categories

Sort By:

Bosch Alternator - 150 Amp - E46, E60, X3

T#:5774

Part#: AL0814X

Ships on Oct 21, 2026

$ 564.52 USD

Add to Wish List

Qty

$ 564.52 USD

Add to Wish List

Keep your BMW's electrical system delivering crisp, consistent power whether on the daily commute or at high load with the Bosch AL0814X Alternator. Built to manage the demands of performance driving and modern vehicle electronics, this 150 amp unit provides rock solid voltage stability across the full RPM range

Show More Show Less

Starter Solenoid

T#:57231530

Part#: 12411427080

Special Order: No Guaranteed ETA

$ 78.99 USD

Add to Wish List

Qty

$ 78.99 USD

Add to Wish List

When you are at the track or gearing up for a weekend backroad drive, the last thing you need is a sluggish starter holding your BMW back.

Hella Oil Pressure Switch - M12x1.5

T#:591881

Part#: 12611710509

Special Order: No Guaranteed ETA

$ 7.99 USD

Add to Wish List

Qty

$ 7.99 USD

Add to Wish List

Leaking or malfunctioning oil pressure switches can be disastrous

Alternator

T#:56544002

Part#: 12317501690

Special Order: No Guaranteed ETA

$ 245.99 USD

Add to Wish List

Qty

$ 245.99 USD

Add to Wish List

Trust Febi Bilstein for clean power output and dependable performance every time you start your engine.

Crankshaft Sensor With Sealing Ring

T#:56507847

Part#: 12141709616

Special Order: No Guaranteed ETA

$ 14.99 USD

Add to Wish List

Qty

$ 14.99 USD

Add to Wish List

Keep your BMW’s engine management system operating at peak performance with this replacement crankshaft position sensor from Febi Bilstein.

Starter Motor

T#:56724716

Part#: 12412354693

Special Order: No Guaranteed ETA

$ 147.99 USD

Add to Wish List

Qty

$ 147.99 USD

Add to Wish List

This Febi Bilstein starter motor delivers the cranking performance your BMW needs for instant ignition response every time you turn the key.

Oil Temperature Sensor And Gauge Kit - Blue & Red - Multiple BMWs ...

10X Entries Into Our F80 M3 Sweepstakes

T#:401689

Part#: OILTEMPGAUGEBRKK

Back Ordered

Sale - Save 2% $ 196.99

This product was last offered at the strikethrough price on
05-03-2026

$ 193.26 USD

Add to Wish List

Qty

Sale - Save 2%

$ 196.99

This product was last offered at the strikethrough price on
05-03-2026

$ 193.26 USD

Add to Wish List

The EVO series from ProSport Gauges is an award winning, industry leading option for those looking to push their car's limits. They allowing you to monitor crucial engine functions in one quick glance with advanced precision. Featuring a dual color readout, you can customize your readout to your liking. Offering a user friendly readout with a digital reading in the center with a bar-graph style sweep around the gauge as well.

Show More Show Less

URO - Camshaft Position Sensor - E46 323Ci, E46 325i, E39 528i, Z3 2....

2X Entries Into Our F80 M3 Sweepstakes

T#:33679726

Part#: 12147539165

Ships in 1 Business Day

$ 18.99 USD

Add to Wish List

Qty

$ 18.99 USD

Add to Wish List

URO Camshaft Position Sensor is a premium replacement component specifically designed for BMW vehicles, ensuring optimal engine performance and reliability. Manufactured by Turner Motorsport, this camshaft position sensor plays a crucial role in maintaining accurate timing and enhancing overall engine efficiency. By upgrading to the URO Camshaft Position Sensor, BMW owners can expect improved engine responsiveness and a significant reduction in potential diagnostic trouble codes.

Enhanced Engine Performance: Ensures precise timing and efficient engine operation, contributing to superior overall performance.
Durable Construction: Crafted from high-quality materials that withstand extreme conditions for long-lasting durability.
Easy Installation: Designed for a direct fit, facilitating straightforward installation for both professionals and DIY enthusiasts.
Reliable OEM Replacement: Matches OEM specifications, providing peace of mind and preserving the integrity of the vehicle.

Show More Show Less

FAE Oil Pressure Switch - M12x1.5

T#:374049

Part#: 12617568480

Back Ordered

$ 7.99 USD

Add to Wish List

Qty

$ 7.99 USD

Add to Wish List

Leaking or malfunctioning oil pressure switches can be disastrous

Hitachi Crankshaft Position Sensor - BMW M52 S52 M54

T#:48815470

Part#: 12141709616

Back Ordered

$ 32.99 USD

Add to Wish List

Qty

$ 32.99 USD

Add to Wish List

NOTE: Does not include o-ring seal - see BMW # 12141748398 This is the crankshaft 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 Hitachi sensor to restore peak performance.

Show More Show Less

Re-manufactured Starter Motor - Priced Each

T#:3471789

Part#: 124123547095KT

Back Ordered

$ 346.99

This product was last offered at the strikethrough price on
04-09-2026

$ 340.99 USD

Add to Wish List

Qty

$ 340.99 USD

Add to Wish List

Price Included a $40.00 Core Charge

Meyle Outdoor Temperature Sensor / Probe

5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

T#:579266

Part#: 3009190001

Back Ordered

$ 44.99 USD

Add to Wish List

Qty

$ 44.99 USD

Add to Wish List

Common fix for incorrect OBC temperature readings

FAE Oil Pressure Switch - M12x1.5

T#:377029

Part#: 12612367061

Back Ordered

$ 5.99 USD

Add to Wish List

Qty

$ 5.99 USD

Add to Wish List

Leaking or malfunctioning oil pressure switches can be disastrous

URO Crankshaft Position Sensor - BMW E46

2X Entries Into Our F80 M3 Sweepstakes

T#:37858384

Part#: 13627548994

Back Ordered

$ 19.99 USD

Add to Wish List

Qty

$ 19.99 USD

Add to Wish List

URO Crankshaft Position Sensor - BMW E46

URO Crankshaft Position Sensor - BMW E46 is a premium replacement designed to restore precise engine timing and eliminate performance issues caused by a faulty sensor. This direct-fit OE replacement ensures accurate crankshaft position readings for smooth engine operation and reliable performance.

Direct-fit OE replacement restores proper engine timing and functionality
Eliminates check engine lights and trouble codes caused by a failed sensor
High-quality polymer and metal construction withstands extreme engine temperatures
Alloy conductors minimize electrical resistance for precise signal transmission at any RPM
Ensures optimal fuel efficiency and engine performance
Backed by a 24-month unlimited mileage warranty

Compatible with BMW E46 models, this URO Crankshaft Position Sensor delivers long-lasting reliability and smooth engine operation.

Show More Show Less

1
…
3
4

Select Vehicle

Purpose

Category

Electrical System

Brand

View All Brands

Price

Special Offers

Shipping