BMW Electrical Sensors, Switches, & Relays for BMW G01 X3 xDrive30i B46 2.0L

Clear BMW chassis

Please ensure your correct model is selected

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:
Braille Performance Endurance AGM Battery - B10049 - 58lbs
Braille Performance Endurance AGM Battery - B10049 - 58lbs
This item is classified as Hazardous Materials and requires special shipping and handling. We cannot ship this item out of the US or with priority shi
Braille - Corporate Logo
T#:558078
Part#: B10049
Ships in 8 Business Days
$ 446.99 USD
Add to Wish List
$ 446.99 USD
Add to Wish List
This Group 49 Endurance AGM battery is an ideal upgrade from the factory battery, offering higher cranking power and a longer battery life for less waste and lower cost to the customer. Plus, this battery is maintenance free and won't eat holes in the battery tray and surrounding areas of your car. Endurance AGM batteries from Braille are a drop-in OEM replacement that requires no modifications to be made for installation, has the highest cranking power and longest run times in their class, and also feature AGM internal racing technology developed for their Advanced AGM and Carbon Fiber batteries.
Show More Show Less
Braille Performance Lightweight AGM Battery - B14115 - 11.5lbs
Braille Performance Lightweight AGM Battery - B14115 - 11.5lbs ...
Braille - Corporate Logo
T#:558037
Part#: B14115
Ships in 5 Business Days
$ 204.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 204.99 USD
Free Shipping on orders $49 and up
Add to Wish List
When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your cars operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind!
Show More Show Less
Braille Performance Lightweight Advanced AGM Battery - B2015 - 15lbs
Braille Performance Lightweight Advanced AGM Battery - B2015 - 15lbs ...
Braille - Corporate Logo
T#:558038
Part#: B2015
In Stock
$ 237.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 237.99 USD
Free Shipping on orders $49 and up
Add to Wish List
When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your cars operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind! The B2015 is Braille's most popular non-carbon racing battery and is able to start larger engines easily for racing and offers daily driving capability for most 4 and 6 cylinders engine vehicles. Physical Specifications: BCI Group: All sizes Weight: 15lbs / 6.8kg Length: 6.8" / 173mm Width: 3.4" / 86mm Height: 6.1" / 155mm Polarity: Right Side Positive Performance Specifications: Voltage: 12 Full Charge Voltage: 13.2 Pulse Cranking Amps (PCA): 1067 Amp Hour (AH): 21 Life Cycle @ 10% DOD: 3100 *THIS BATTERY REQUIRES A CUSTOM MOUNTING SOLUTION. The size and weight are significantly smaller than a stock battery and will not be held in place by the stock battery mount*
Show More Show Less
Braille Lightweight Advanced AGM Battery - B3121 - 21lbs
Braille Lightweight Advanced AGM Battery - B3121 - 21lbs
Braille - Corporate Logo
T#:558042
Part#: B3121
Ships in 6 Business Days
$ 270.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 270.99 USD
Free Shipping on orders $49 and up
Add to Wish List
When building a car for the track, one of the most important factors to consider is weight. Stock batteries can weigh up to almost 50 pounds and are unnecessarily large, designed to power a host of systems not normally used in a track car (radios, lighting, etc.). What can you do to cut weight the weight without affecting your car's operation? This is where Braille Battery comes in with their long line of performance lightweight battery options! Designed to provide the highest cranking power possible while being up to 75% lighter, Braille Battery is one of the foremost leaders in automotive racing batteries with nothing but high quality, high output batteries in mind! The B3121 battery from Braille is their lightest do-everything battery available, offering 1380 pulse cranking amps that can crank over V8 engines with ease while still coming in at under 22 pounds, half of the weight of a standard Group 34 battery! This is thanks to their Advanced AGM racing technology that allows them to put a ton of power into a very small package. Physical Specifications: BCI Group: All sizes Weight: 21lbs / 9.5kg Length: 6.6" / 168mm Width: 5.2" / 132mm Height: 6.8" / 173mm Polarity: Right Side Positive Terminal Type: Steel terminal block with M6 bolt Performance Specifications: Voltage: 12v Recharge Voltage: 14.4V – 14.6V Maintenance charge voltage: 13.8V 5s Pulse Cranking Amps (PCA): 1380 10s PDC: 124 Amp Hour (Ah): 31 Watt Hour (Wh): 372 Life Cycle @ 10% DOD: 3100 Charging Temperature 0C to 50C Discharge Temperature range -40C to +60C Storage temperature -40C to +60C *THIS BATTERY REQUIRES A CUSTOM MOUNTING SOLUTION. The size and weight are significantly smaller than a stock battery and will not be held in place by the stock battery mount*
Show More Show Less
Braille Performance Intensity Carbon Lithium-ION Battery - i48CX - 10.5lbs
Braille Performance Intensity Carbon Lithium-ION Battery - i48CX - 10...
This item is classified as Hazardous Materials and requires special shipping and handling. We cannot ship this item out of the US or with priority shi
Braille - Corporate Logo
T#:558047
Part#: I48CX
Ships in 4 Business Days
$ 1,164.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 1,164.99 USD
Free Shipping on orders $49 and up
Add to Wish List
The ultra-lightweight, standard height I48CX lithium-ION battery from Braille Battery is a popular choice among BMW enthusiasts looking for a drop-in replacement battery that shaves off a ton of weight, 35 pounds in total! Thanks to the Group 48 design of this battery, no modifications are needed for installation. This is perfect for anyone looking to drive their car both on and off of the track, without any negative side effects, and wants a battery with a 10-15 year life span!
Show More Show Less
OMP Battery Cut Off Switch / Kill Switch
OMP Battery Cut Off Switch / Kill Switch
OMP - Corporate Logo
T#:1614
Part#: EA-462
Back Ordered
$ 65.00 USD
Free Shipping
Add to Wish List
$ 65.00 USD
Free Shipping
Add to Wish List
OMP Battery Cut Off Switch / Kill Switch, for use in racecars as an emergency "kill switch", to depower the electrical system in the event of a crash or other emergency. This cut off switch is FIA approved, has 6 poles and alternator protection, as well as a removable key.
Show More Show Less
Endurance Series AGM Battery - B48-H6-L3
Endurance Series AGM Battery - B48-H6-L3
Braille - Corporate Logo
T#:36947237
Part#: B48-H6-L3
Ships in 4 Business Days
$ 398.99 USD
Add to Wish List
$ 398.99 USD
Add to Wish List
Braille Performance GreenLite Lithium-ION Battery - G30 - 5.5lbs
Braille Performance GreenLite Lithium-ION Battery - G30 - 5.5lbs ...
Braille - Corporate Logo
T#:558046
Part#: G30
Ships in 6 Business Days
$ 522.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 522.99 USD
Free Shipping on orders $49 and up
Add to Wish List
The G30 lithium battery from Braille is designed for the Import Tuner market (4 and 6 cylinder) for track use and has enough power for small black V8 race cars and hot rods with light electrical demands/accessories and standard compression. The G30 comes in the popular ETX 30 Group size, just like the B3121 AGM, so it is small and light enough to mount in a variety of locations. Incorporated in this battery is the same technology used in their race winning batteries used by nearly every OEM developer in classes ranging from SCCA to Formula 1.
Show More Show Less
Crankshaft Pulse Sensor
Crankshaft Pulse Sensor
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:55030835
Part#: 3148100018
In Stock
New Item
$ 15.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 15.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Keep your ultimate driving machine running the way it was engineered to with this reliable replacement.
Battery Tender Plus Advanced Battery Charging System
Battery Tender Plus Advanced Battery Charging System
Battery Tender - Corporate Logo
T#:49892371
Part#: BTT0210128
In Stock at Vendor
$ 69.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 69.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Knock Sensor
Knock Sensor
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:55353615
Part#: 12141716055
Ships on Oct 6, 2026
New Item
$ 28.99 USD
Add to Wish List
$ 28.99 USD
Add to Wish List
This Meyle replacement knock sensor is the perfect solution for keeping your high-performance engine safe and running at its absolute peak.
MEYLE Crank Position Sensor - BMW E46, E90
MEYLE Crank Position Sensor - BMW E46, E90
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:52621846
Part#: MPS0126
Ships on Oct 6, 2026
New Item
$ 29.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 29.99 USD
Free Shipping on orders $49 and up
Add to Wish List
The Meyle MPS0126 Crankshaft Position Sensor is a robust replacement for aging or failing factory sensors that often trigger P0335 or P0339 trouble codes.

Select Vehicle

BMW Mini
Clear Vehicle

Purpose

Category

Brand

Price

$
$

Special Offers

Shipping