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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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Alternator - 120 Amp (Compact)

ES#4905111 - 12317501599LKT - Alternator - 120 Amp (Compact) - Includes a refundable $84.50 core charge - Lucas - BMW

Includes a refundable $84.50 core charge With rectangular-shaped 2-pin plug socket.

Brand:
Lucas - Corporate Logo
ES#:
4905111
Mfg#:
12317501599LKT
Ships on Aug 6, 2026
$255.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Starter Motor

New starter with no core charge! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5480940
Mfg#:
12412354693
Ships on Sep 28, 2026
Auto Notify
$129.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Temperature Sensor And Gauge Kit - Green/White

ES#3173689 - oiltempgaugeKT - Oil Temperature Sensor And Gauge Kit - Green/White - The perfect combination for your oil temperature needs, a Turner oil sensor flange with a Prosport gauge! - Assembled By ECS - BMW

The perfect combination for your oil temperature needs, a Turner oil sensor flange with a Prosport gauge! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3173689
Mfg#:
OILTEMPGAUGEKT
Ships on Nov 30, 2026
ON SALE!
$196.99

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

$193.26 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Oil Temperature Sensor And Gauge Kit - Blue/Red

ES#3173690 - oiltempgaugeBRKT - Oil Temperature Sensor And Gauge Kit - Blue/Red - The perfect combination for your oil temperature needs, a Turner oil sensor flange with a Prosport gauge! - Assembled By ECS - BMW

The perfect combination for your oil temperature needs, a Turner oil sensor flange with a Prosport gauge! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3173690
Mfg#:
OILTEMPGAUGEBRKT
Ships on Nov 30, 2026
ON SALE!
$196.99

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

$193.26 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Oil Pressure Switch

ES#4327478 - 12618611273 - Oil Pressure Switch - Restore your vehicles critical engine monitoring system with this premium replacement Oil Pressure Switch from Meyle. - Meyle - BMW

Restore your vehicle’s critical engine monitoring system with this premium replacement Oil Pressure Switch from Meyle. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4327478
Mfg#:
12618611273
Special Order: No Guaranteed ETA
$6.99 USD
Free Shipping
on orders $49 and up

OEM BMW Engine Air Pump

Common source of emissons related issues

Brand:
Pierburg - Corporate Logo
ES#:
3032195
Mfg#:
11721433959
Special Order: No Guaranteed ETA
$250.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#2873855 - 11781742050 - Oxygen Sensor - Priced Each - 2 required in each application - Febi - BMW

2 required in each application 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2873855
Mfg#:
11781742050
Special Order: No Guaranteed ETA
$110.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Camshaft Position Sensor

ES#4841504 - 12147539165 - Camshaft Position Sensor - A camshaft position sensor is a crucial engine component that monitors the position and rotational speed of the camshaft, enabling the engine control unit to optimize fuel injection and ignition timing for improved performance and efficiency. - URO - BMW

A camshaft position sensor is a crucial engine component that monitors the position and rotational speed of the camshaft, enabling the engine control unit to optimize fuel injection and ignition timing for improved performance and efficiency. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4841504
Mfg#:
12147539165
Back Ordered
Auto Notify
$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTEK MXS 25EC

Fully automatic 8 step smart charger and battery support unit that delivers 25A to 12V batteries from 40–500Ah.

Brand:
CTEK - Corporate Logo
ES#:
4492939
Mfg#:
40-128
Back Ordered
$437.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CTEK Pro Battery Tester

Don't leave yourself stranded with a dead battery.

Brand:
CTEK - Corporate Logo
ES#:
4492938
Mfg#:
40-209
Back Ordered
$1103.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal Battery Relocation Kit

Odyssey 680 - Switch Mount

Brand:
Rennline - Corporate Logo
ES#:
2839918
Mfg#:
EL4138
Back Ordered
$173.00 USD
Free Shipping
on orders $49 and up

Rennline Universal Battery Mount Kit

Odyssey 925-Switch Mount To be used with the Odyssey 925 battery

Brand:
Rennline - Corporate Logo
ES#:
2839915
Mfg#:
EL4134
Back Ordered
$189.00 USD
Free Shipping
on orders $49 and up

Rennline Universal Battery Mount Kit Odyssey 925

This Battery Relocation Kit is designed to work with the Odyssey 925 lightweight battery

Brand:
Rennline - Corporate Logo
ES#:
2839916
Mfg#:
EL4135
Back Ordered
$168.00 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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