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

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

Vapor Canister Grommet

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

Used in the charcoal canister connection affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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

3 Pin Connector

ES#4772586 - 12521732596 - 3 Pin Connector - Includes connector housing with terminals and seals. Commonly used for the camshaft position sensor. - ECS - BMW

Includes connector housing with terminals and seals. Commonly used for the camshaft position sensor. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4772586
Mfg#:
12521732596
In Stock
ON SALE! SAVE 39%
$10.99

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

$6.69 USD
Free Shipping
on orders $49 and up
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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
OMP - Corporate Logo
ES#:
3026647
Mfg#:
EA-462
Back Ordered
Auto Notify
$65.00 USD
Free Shipping
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
169305
Mfg#:
61358379502
Ships in 8 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
06-06-2026

$258.99 USD
Free Shipping
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. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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
Ships in 3 Business Days
$258.99

This product was last offered at the strikethrough price on
05-18-2026

$253.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

GENIUS 6V / 12V 2 Amp Battery Charger - NOCO

ES#4031173 - GENIUS2 - GENIUS 6V / 12V 2 Amp Battery Charger - NOCO - The GENIUS2 is similar to the G1100, just better. It's 30% smaller and delivers 140% more power. And it's simpler and easier to use than ever before. - NOCO - Audi BMW Volkswagen Mercedes Benz MINI Porsche

The GENIUS2 is similar to the G1100, just better. It's 30% smaller and delivers 140% more power. And it's simpler and easier to use than ever before. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
NOCO - Corporate Logo
ES#:
4031173
Mfg#:
GENIUS2
In Stock
23% off MSRP

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

$64.95

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

$49.94 USD
Free Shipping
on orders $49 and up

O-Ring

ES#23853 - 11421702917 - O-Ring - See MOQKT - Genuine BMW - BMW

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

Brand:
Genuine BMW - Corporate Logo
ES#:
23853
Mfg#:
11421702917
Ships in 2 Business Days
$9.18 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

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

Coolant Temperature Sensor

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

Monitors coolant temperature affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4316487
Mfg#:
13621703993
In Stock
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

Temperature Sensor

ES#4877316 - 13621433076 - Temperature Sensor - Monitors coolant / oil temperature - URO - BMW

Monitors coolant / oil temperature affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4877316
Mfg#:
13621433076
In Stock
$10.34 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Plug Relay

ES#164513 - 61131378418 - Plug Relay - Electrical relay to repair your electrical system - Genuine BMW - BMW

Electrical relay to repair your electrical system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
164513
Mfg#:
61131378418
In Stock
$4.99 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! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
3979351
Mfg#:
029054SCH01A
Ships on Nov 27, 2026
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

Leak Diagnosis Pump

ES#2702165 - 16136756440 - Leak Diagnosis Pump - Located under the vehicle, near the transmission bellhousing or in the rear. - Bosch - BMW

Located under the vehicle, near the transmission bellhousing or in the rear. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
2702165
Mfg#:
16136756440
Back Ordered
$221.99

This product was last offered at the strikethrough price on
05-07-2026

$215.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Race German Coolant Temperature Sender Adapter - M12x1.5

ES#4493066 - RGCTSAM12 - Race German Coolant Temperature Sender Adapter - M12x1.5 - Splice into your cooling system to add an aftermarket coolant temperature sensor and gauge! - Race German - BMW

Splice into your cooling system to add an aftermarket coolant temperature sensor and gauge! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Race German - Corporate Logo
ES#:
4493066
Mfg#:
RGCTSAM12
In Stock
$35.99 USD
Free Shipping
on orders $49 and up

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

Brand:
URO - Corporate Logo
ES#:
2738654
Mfg#:
61128373946T
In Stock
$9.77 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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