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BMW E39 525i M54 2.5L

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BMW E39 525i M54 2.5L Engine Electrical Parts

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Battery Clamp Grease - 50 grams

ES#3514231 - 20244 - Battery Clamp Grease - 50 grams - Excellent corrosion protection for your battery and other connections - Liqui-Moly - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Excellent corrosion protection for your battery and other connections 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Liqui-Moly - Corporate Logo
ES#:
3514231
Mfg#:
20244
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.

$7.99

This product was last offered at the strikethrough price on
02-24-2026

$6.85 USD
Free Shipping
on orders $49 and up

Coolant Temperature Sensor

ES#4316487 - 13621703993 - Coolant Temperature Sensor - Monitors coolant temperature - Bavarian Autosport - BMW

Monitors coolant temperature 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4316487
Mfg#:
13621703993
Ships on Oct 16, 2026
Auto Notify
ON SALE! SAVE 20%
$20.99

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

$16.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Positive Battery Cable

ES#30113 - 12421436885 - Positive Battery Cable - Battery cable that carries the power from your battery terminal - Genuine BMW - BMW

Battery cable that carries the power from your battery terminal

Brand:
Genuine BMW - Corporate Logo
ES#:
30113
Mfg#:
12421436885
Ships in 5 Business Days
3% off MSRP

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

$292.99

This product was last offered at the strikethrough price on
07-21-2026

$284.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Negative Battery Cable T Bolt

ES#2738654 - 61128373946t - Negative Battery Cable T Bolt - Replace the T bolt for securing the battery cable without replacing the whole cable - URO - Audi BMW Volkswagen MINI

Replace the T bolt for securing the battery cable without replacing the whole cable 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2738654
Mfg#:
61128373946T
Ships in 1 Business Day
$9.77 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

120 pc Fuse Assortment

ES#4371741 - W5368 - 120 pc Fuse Assortment - A must for any toolbox. - Performance Tool - Audi BMW Volkswagen Mercedes Benz MINI Porsche

A must for any toolbox.

Brand:
Performance Tool - Corporate Logo
ES#:
4371741
Mfg#:
W5368
Ships in 1 Business Day
$13.68 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Starter with Mounting Hardware

ES#3470053 - 12411740379KT2 - Remanufactured Starter with Mounting Hardware - Remanufactured unit, $52 refundable core charge included in price. - Bosch - BMW

Remanufactured unit, $52 refundable core charge included in price. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat! Does not have threaded mounting holes - Includes Mounting Hardware
For vehicles with production date up to 09/2002

Brand:
Bosch - Corporate Logo
ES#:
3470053
Mfg#:
12411740379KT2
In Stock
$263.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Vapor Canister Grommet

ES#3521464 - 16131183912 - Vapor Canister Grommet - Used in the charcoal canister connection - URO - BMW MINI

Used in the charcoal canister connection 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3521464
Mfg#:
16131183912
In Stock
$5.83 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

EWS Transmitter

ES#169305 - 61358379502 - EWS Transmitter - A common cause of starting issues - Genuine BMW - BMW

A common cause of starting issues

Brand:
Genuine BMW - Corporate Logo
ES#:
169305
Mfg#:
61358379502
Ships in 9 Business Days
3% off MSRP

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

$267.99

This product was last offered at the strikethrough price on
07-21-2026

$260.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Battery Cut-Off/Kill Switch

ES#3026647 - EA-462 - Battery Cut-Off/Kill Switch - Disconnect your battery in an instant! - OMP - BMW

Disconnect your battery in an instant!

Brand:
OMP - Corporate Logo
ES#:
3026647
Mfg#:
EA-462
In Stock
$65.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Ignition Coil - Priced Each

ES#2813619 - 12131748017 - Ignition Coil - Priced Each - Get your engine working flawlessly with new ignition coils - Includes new coil and boot - Hamburg Tech - BMW

Get your engine working flawlessly with new ignition coils - Includes new coil and boot We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2813619
Mfg#:
12131748017
In Stock at Vendor
$52.99

This product was last offered at the strikethrough price on
02-25-2026

$32.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Bearing Accelator Bowden Cable

ES#34148 - 13541747519 - Bearing Accelator Bowden Cable - Located on throttle body housing - Genuine BMW - BMW

Located on throttle body housing

Brand:
Genuine BMW - Corporate Logo
ES#:
34148
Mfg#:
13541747519
In Stock
$2.31 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Schwaben Digital Circuit Tester With Test Probes

ES#3979351 - 029054SCH01A - Schwaben Digital Circuit Tester With Test Probes - Circuit tester for 6-24 Volt systems! - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

Circuit tester for 6-24 Volt systems! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
3979351
Mfg#:
029054SCH01A
Ships on Jan 13, 2027
ON SALE!
$37.99

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

$36.09 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Coil, 4-Pack

ES#5435316 - MMIG-BMW-0204 - Ignition Coil, 4-Pack - Designed to restore the factory performance and fuel efficiency of a wide range of BMW models from 2002 to 2016. - Mishimoto - BMW

Designed to restore the factory performance and fuel efficiency of a wide range of BMW models from 2002 to 2016.

Brand:
Mishimoto - Corporate Logo
ES#:
5435316
Mfg#:
MMIG-BMW-0204
Ships in 3 Business Days
$123.99 USD
Free Shipping
on orders $49 and up

O-Ring Seal

ES#2801859 - 12141748398 - O-Ring Seal - Always replace the o-ring when replacing sensor - Rein - BMW

Always replace the o-ring when replacing sensor 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2801859
Mfg#:
12141748398
In Stock
$4.99

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

$2.75 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Starter

ES#2724206 - 12411740379ktbKT - Remanufactured Starter - Remanufactured unit, $52 refundable core charge included in price. - Bosch - BMW

Remanufactured unit, $52 refundable core charge included in price. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat! Does not have threaded mounting holes.
For vehicles with production date up to 09/2002

Brand:
Bosch - Corporate Logo
ES#:
2724206
Mfg#:
12411740379KTBKT
In Stock
$234.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Repair Kit For Socket

ES#3046199 - 61132359992 - Repair Kit For Socket - Repair those damaged wire/connectors - Genuine BMW - BMW

Repair those damaged wire/connectors

Brand:
Genuine BMW - Corporate Logo
ES#:
3046199
Mfg#:
61132359992
Ships Today
ON SALE!
$13.99

This product was last offered at the strikethrough price on
06-25-2026

$13.63 USD
Free Shipping
on orders $49 and up
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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