BMW Electrical Sensors, Switches, & Relays for BMW X5 M S63 4.4L

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 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
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
Superior Bass Sports Horn Kit 330Hz + 400Hz 112Db
Superior Bass Sports Horn Kit 330Hz + 400Hz 112Db
PIAA - Corporate Logo
T#:31158805
Part#: 85115
Ships on Oct 13, 2026
$ 77.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 77.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Superior Bass Sports Horn Kit 330Hz + 400Hz 112Db

The Superior Bass Sports Horn Kit 330Hz + 400Hz 112Db is designed to make sure your presence is known with powerful, attention-grabbing sound. These high-performance sports horns feature:

  • Impressive Loudness: Delivers a powerful 112 decibels, ensuring you’re heard in any situation.
  • Dual Frequency: Includes 330Hz and 400Hz horns for a dynamic and distinct sound.
  • Lightweight & Durable: Constructed for easy installation with weather-resistant covers, built to withstand the elements.
  • Easy Installation: Quick and straightforward to install, enhancing vehicle safety with minimal effort.

The kit is a must-have for anyone looking to enhance their vehicle’s horn performance and visibility on the road.

Show More Show Less
Precision Raceworks Ethanol Sensor Breakout Harness
Precision Raceworks Ethanol Sensor Breakout Harness
Precision Raceworks - Corporate Logo
T#:35559424
Part#: 201-0411
In Stock
$ 34.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 34.99 USD
Free Shipping on orders $49 and up
Add to Wish List
n Ethanol Sensor Breakout Harness provides a clean wiring solution by splitting the signal from your ethanol content sensor between two analyzers, such as an ECU/controller and a gauge or Bluetooth display, without modifying your existing harness.his setup enables real-time ethanol level monitoring and facilitates comprehensive DME/ECU adjustments for enhanced automotive performance.citeturn0search0
Show More Show Less
Bass Tone Sports Horn Kit 400Hz + 500Hz, 115Db
Bass Tone Sports Horn Kit 400Hz + 500Hz, 115Db
PIAA - Corporate Logo
T#:31589317
Part#: 85110
In Stock
$ 77.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 77.99 USD
Free Shipping on orders $49 and up
Add to Wish List
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
Wire With Terminals For 90 Degree 6 Pin Bulkhead (Red)
Wire With Terminals For 90 Degree 6 Pin Bulkhead (Red)
Precision Raceworks - Corporate Logo
T#:38161695
Part#: 201-0360-RED
Ships in 9 Business Days
$ 5.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 5.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Red in color and 12 Gauge.
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Black - Dual 18 Gauge
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Black - Dual 18 Ga...
Precision Raceworks - Corporate Logo
T#:38161710
Part#: 201-0362
Ships in 9 Business Days
$ 4.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 4.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Black in color and 18 Gauge dual wire.
Wire With Terminals For 90 Degree 6 Pin Bulkhead (Black) 12 Gauge
Wire With Terminals For 90 Degree 6 Pin Bulkhead (Black) 12 Gauge ...
Precision Raceworks - Corporate Logo
T#:38161711
Part#: 201-0360-BLK
Ships in 9 Business Days
$ 4.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 4.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Black in color and 12 Gauge.
Wire With Terminals For 90 Degree 6 Pin Bulkhead (Green)
Wire With Terminals For 90 Degree 6 Pin Bulkhead (Green)
Precision Raceworks - Corporate Logo
T#:38161687
Part#: 201-0361-GRN
Ships in 9 Business Days
$ 3.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 3.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Green in color and 18 Gauge.
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Yellow
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Yellow
Precision Raceworks - Corporate Logo
T#:38161692
Part#: 201-0360-YEL
Ships in 9 Business Days
$ 4.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 4.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Yellow in color and 12 Gauge.
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Orange
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Orange
Precision Raceworks - Corporate Logo
T#:38161698
Part#: 201-0360-ORG
Ships in 9 Business Days
$ 4.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 4.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Orange in color and 12 Gauge.
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Blue
Wire With Terminals For 90 Degree 6 Pin Bulkhead - Blue
Precision Raceworks - Corporate Logo
T#:38161703
Part#: 201-0360-BLU
Ships in 9 Business Days
$ 4.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 4.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. Blue in color and 12 Gauge.
Wire With Terminals For 90 Degree 6 Pin Bulkhead (White)
Wire With Terminals For 90 Degree 6 Pin Bulkhead (White)
Precision Raceworks - Corporate Logo
T#:38161693
Part#: 201-0360-WHT
Ships in 9 Business Days
$ 4.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 4.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Upgrade any wiring system with this optimal solution, ensuring reliability and durability in any demanding automotive application. White in color and 12 Gauge.
Morimoto Standalone Can-Bus Wiring Harness - H4 / 9003 - Priced Each
Morimoto Standalone Can-Bus Wiring Harness - H4 / 9003 - Priced Each ...
Morimoto - Corporate Logo
T#:54388428
Part#: H240
Ships in 4 Business Days
New Item
$ 21.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 21.99 USD
Free Shipping on orders $49 and up
Add to Wish List

Select Vehicle

BMW Mini
Clear Vehicle

Purpose

Category

Brand

Price

$
$

Special Offers

Shipping