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BMW E83 X3 M54 3.0L

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BMW E83 X3 M54 3.0L Engine Electrical Parts

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Optima YELLOWTOP High Performance AGM Battery - H6

ES#3639387 - 9048-148 - Optima YELLOWTOP High Performance AGM Battery - H6 - Upgrade to the true dual purpose heavy duty battery with a longer life span - Optima - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Upgrade to the true dual purpose heavy duty battery with a longer life span affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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 shippi

Brand:
Optima - Corporate Logo
ES#:
3639387
Mfg#:
9048-148
Ships in 3 Business Days
$468.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Voltage Regulator

ES#3191627 - 12317561939 - Voltage Regulator - Get back on the road without having to swap an entire alternator. - Bosch - BMW
ECS Tuning recommends this product.

Get back on the road without having to swap an entire alternator. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat! For vehicles with 180 AMP Bosch Alternator

Brand:
Bosch - Corporate Logo
ES#:
3191627
Mfg#:
12317561939
In Stock
$61.91 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Throttle Booster

ES#4624166 - D440-1700 - Throttle Booster - Wireless controlled unit that allows adjustable throttle response control - Dinan - BMW MINI

Wireless controlled unit that allows adjustable throttle response control Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Dinan - Corporate Logo
ES#:
4624166
Mfg#:
D440-1700
In Stock
11% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$325.99

This product was last offered at the strikethrough price on
06-24-2026

$288.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Intensity Carbon Lithium-ION Battery - i48CX - 10.5lbs

ES#3617648 - i48CX - Intensity Carbon Lithium-ION Battery - i48CX - 10.5lbs - Replace your stock, heavy battery with a direct replacement, lightweight performance Lithium battery that weighs in at only 10.5lbs! - Braille - BMW

Replace your stock, heavy battery with a direct replacement, lightweight performance Lithium battery that weighs in at only 10.5lbs! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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 shippi

Brand:
Braille - Corporate Logo
ES#:
3617648
Mfg#:
I48CX
Ships in 4 Business Days
$1164.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Level Indicator

ES#2100546 - 12617607910 - Oil Level Indicator - Reads oil level in oil pan - Genuine BMW - BMW

Reads oil level in oil pan affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2100546
Mfg#:
12617607910
In Stock
14% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$298.81

This product was last offered at the strikethrough price on
06-24-2026

$257.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Temperature Sensor

ES#34326 - 13621433076 - Temperature Sensor - Monitors coolant / oil temperature - Genuine BMW - BMW

Monitors coolant / oil temperature affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
34326
Mfg#:
13621433076
In Stock
16% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$66.05

This product was last offered at the strikethrough price on
01-08-2026

$55.45 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Front or Rear Manifold

ES#261733 - 11787523434 - Oxygen Sensor - Front or Rear Manifold - Located in the front position of the exhaust manifold - Bosch - BMW

Located in the front position of the exhaust manifold affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with automatic transmissions

Brand:
Bosch - Corporate Logo
ES#:
261733
Mfg#:
11787523434
In Stock
Limited Qty Sale
$210.65

This product was last offered at the strikethrough price on
05-02-2026

$170.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Lightweight AGM Battery

ES#3617608 - B2015 - Lightweight AGM Battery - Perfect upgrade to get rid of a troublesome Lead-Acid battery and add both power and reliability at the same time! - Braille - BMW MINI

Perfect upgrade to get rid of a troublesome Lead-Acid battery and add both power and reliability at the same time! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Braille - Corporate Logo
ES#:
3617608
Mfg#:
B2015
Ships in 7 Business Days
$237.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Mass Air Flow Sensor (MAF)

ES#3035374 - 13627566983 - Mass Air Flow Sensor (MAF) - Controls the air / fuel mixture of the engine - Hella - BMW

Controls the air / fuel mixture of the engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Pre-LCI vehicles only

Brand:
Hella - Corporate Logo
ES#:
3035374
Mfg#:
13627566983
Ships on Jul 17, 2026
Auto Notify
$136.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Relay - Salmon Red

ES#31912 - 12631742690 - Relay - Salmon Red - Used in many places on late model BMWs - Genuine BMW - BMW MINI

Used in many places on late model BMWs affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
31912
Mfg#:
12631742690
In Stock
7% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$24.65

This product was last offered at the strikethrough price on
06-24-2026

$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTEK Battery Charger - MXS 5.0 4.3 Amp 12 Volt

ES#4465086 - CTEK40-206 - CTEK Battery Charger - MXS 5.0 4.3 Amp 12 Volt - Fully automatic microprocessor controlled charger with built-in automatic temperature sensor - CTEK - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Fully automatic microprocessor controlled charger with built-in automatic temperature sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTEK - Corporate Logo
ES#:
4465086
Mfg#:
CTEK40-206
In Stock
$113.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Platinum Spark Plugs - Set Of Six

ES#240578 - FGR7DQP-6 - Platinum Spark Plugs - Set Of Six - Keep your motor running smoothly with a set of new spark plugs - Bosch - BMW

Keep your motor running smoothly with a set of new spark plugs affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
240578
Mfg#:
FGR7DQP-6
In Stock
$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Endurance Series AGM Battery - B48-H6-L3

ES#4858502 - B48-H6-L3 - Endurance Series AGM Battery - B48-H6-L3 - Designed for a wide range of demanding, high performance applications, this battery is reliable, long-lasting, and engineered for high shock and vibration applications. - Braille - Audi BMW Volkswagen Mercedes Benz Porsche

Designed for a wide range of demanding, high performance applications, this battery is reliable, long-lasting, and engineered for high shock and vibration applications. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Braille - Corporate Logo
ES#:
4858502
Mfg#:
B48-H6-L3
Ships in 4 Business Days
$398.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Multi-Pump Fuel Surge Tank (MPFST)

ES#4820337 - 20-1440 - Multi-Pump Fuel Surge Tank (MPFST) - Pump Compatibility with Walbro GSS342, AEM 50-1200, Deatschwerks DW440 - Radium Engineering - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Pump Compatibility with Walbro GSS342, AEM 50-1200, Deatschwerks DW440 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Radium Engineering - Corporate Logo
ES#:
4820337
Mfg#:
20-1440
In Stock at Vendor
$549.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

xA Ultra WiFi Adapter

ES#5435385 - xA-Ultra-Adapter - xA Ultra WiFi Adapter - The ultimate OBD adapter designed to deliver exceptional speed, maximum connection stability, and great performance for flashing, coding, and live monitoring - xHP - BMW MINI

The ultimate OBD adapter designed to deliver exceptional speed, maximum connection stability, and great performance for flashing, coding, and live monitoring affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
xHP - Corporate Logo
ES#:
5435385
Mfg#:
XA-ULTRA-ADAPTER
In Stock
$109.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Camshaft Position Sensor

ES#28635 - 12147518628 - Camshaft Position Sensor - Exhaust side - Genuine BMW - BMW

Exhaust side affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
28635
Mfg#:
12147518628
In Stock
17% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$166.83

This product was last offered at the strikethrough price on
06-24-2026

$138.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Electrical Parts

With automotive electrical content growing yearly, it has never been more important to keep your charging and electrical system in top working condition. ECS Tuning stocks a huge and constantly growing inventory of electrical sensors, electric motors, and electronic actuators from original equipment and name-brand aftermarket suppliers.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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