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BMW E46 M3 S54 3.2L

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BMW E46 M3 S54 3.2L Engine Electrical Parts

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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

New Alternator - 120amp

ES#4751405 - 12317831436 - New Alternator - 120amp - Brand new, not remanufactured. No core charge! - Bavarian Autosport - BMW

Brand new, not remanufactured. No core charge! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4751405
Mfg#:
12317831436
Ships on Aug 19, 2026
Auto Notify
ON SALE! SAVE 20%
$222.99

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

$178.39 USD
Free Shipping
on orders $49 and up

Spark Plugs - Set Of Six (DCPR8EKP/7415)

ES#11069 - DCPR8EKP-6 - Spark Plugs - Set Of Six (DCPR8EKP/7415) - Direct factory replacement spark plugs - NGK - BMW

Direct factory replacement spark plugs affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
NGK - Corporate Logo
ES#:
11069
Mfg#:
DCPR8EKP-6
In Stock
$107.99 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

Throttle Body Actuator

ES#34465 - 13627840537 - Throttle Body Actuator - Includes throttle position sensor - Genuine BMW - BMW
ECS Tuning recommends this product.

Includes throttle position sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
34465
Mfg#:
13627840537
Ships on Jul 21, 2026
Auto Notify
5% off MSRP

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

$1942.99

This product was last offered at the strikethrough price on
01-27-2026

$1837.99 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
07-03-2026

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

Mass Air Flow Sensor (MAF)

ES#2576206 - 0280218062 - Mass Air Flow Sensor (MAF) - Restore fuel economy and performance - Bosch - BMW

Restore fuel economy and performance 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#:
2576206
Mfg#:
0280218062
Ships in 1 Business Day
$203.59 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

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

Throttle Position Sensor - Priced Each

ES#5376287 - 13637840383 - Throttle Position Sensor - Priced Each - This is the sensor used on individual throttle bodies engines - Hamburg Tech - BMW

This is the sensor used on individual throttle bodies engines affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2 required per vehicle, One on throttle actuator and one on end of throttle body assembly

Brand:
Hamburg Tech - Corporate Logo
ES#:
5376287
Mfg#:
13637840383
In Stock
$67.99 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
In Stock
$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
$549.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Lightweight AGM Battery

ES#3617613 - B3121 - 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

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#:
3617613
Mfg#:
B3121
Ships in 6 Business Days
$270.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Relay - White Green

ES#169431 - 61368373700 - Relay - White Green - Replaces relays of the same color - Genuine BMW - BMW MINI

Replaces relays of the same color affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
169431
Mfg#:
61368373700
In Stock
4% 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
05-04-2026

$23.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fuel Pump Relay

ES#169217 - 61357892976 - Fuel Pump Relay - Located in the rear fuse/relay box - Genuine BMW - BMW

Located in the rear fuse/relay box affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
169217
Mfg#:
61357892976
In Stock
8% off MSRP

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

$162.07

This product was last offered at the strikethrough price on
07-03-2026

$148.50 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

SCORCHER High-Performance Ignition Coil - Set Of 6

ES#5396075 - 77-92013-MC - SCORCHER High-Performance Ignition Coil - Set Of 6 - SCORCHER High-Performance Ignition Coils produce a high energy spark that ensures complete combustion from idle to redline - AFE - BMW

SCORCHER High-Performance Ignition Coils produce a high energy spark that ensures complete combustion from idle to redline affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AFE - Corporate Logo
ES#:
5396075
Mfg#:
77-92013-MC
In Stock
ON SALE!
$262.00

This product was last offered at the strikethrough price on
06-29-2026

$248.90 USD
Free Shipping
on orders $49 and up

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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