BMW Electrical Sensors, Switches, & Relays for BMW X Series E84 (2013-2015)

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Electrical gremlins can be very frustrating. Luckily your BMW's electrical system is better than most, even if it's 25 years old. Here you will find electrical relays, sensors, switches, and modules for the engine, camshaft, and crankshaft. Our parts are OEM, Genuine BMW, or approved aftermarket brands that we have an excellent track record with. There is no middle ground with electrical parts - it either works perfectly or not. And there's nothing more frustrating than a new part that fails right out of the box. So it's important to choose quality replacement parts over a cheap but faulty piece.

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ECS Heavy Duty Ground Cable Upgrade (12427549396) - E9X AWD
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:48642696
Part#: 059226LA02
In Stock
New Item
Sale - Save 44% $ 39.99

This product was last offered at the strikethrough price on
02-04-2026

$ 22.49 USD
Free Shipping
Sale - Save 44%
$ 39.99

This product was last offered at the strikethrough price on
02-04-2026

$ 22.49 USD
Free Shipping

If you're experiencing hard starting, flaky charging, or other electrical issues, your engine ground strap may be the culprit. On E9X BMWs, the engine ground strap is a thin, non-insulated cable that spans from the left engine mount arm to the frame horn. Despite the seemingly simple nature of this part, on older cars, it is known to cause massive headaches. Due to its non-insulated design, years of exposure to water, dirt, and road salt will cause the wire to corrode, ultimately leading to complete failure. A break in this cable will cause an open circuit, resulting in issues with the vehicle's electrical system and potentially leading to a no-start condition.

To solve this issue, ECS has engineered an exact-fit, upgraded ground strap for your E9X BMW! Unlike its OEM counterpart, this design features insulated, large-gauge copper wire for dependable conductivity and long-lasting durability. Additionally, factory-style lugs are zinc-coated, crimped, and soldered, ensuring protection against corrosion and oxidation.

Whether you're replacing a visibly corroded strap or proactively preventing failure, this solution from ECS is sure to provide lasting performance and protection.

FEATURES

Direct-fit replacement and upgrade for RWD E82/E88, E84, and E9X applications Solves intermittent grounding issues caused by aging OEM straps Clean, stealthy design that fits seamlessly in factory engine bays Factory length and lug orientation for drop-in fitment 2 AWG tinned copper cable for excellent conductivity and corrosion resistance Zinc-coated lugs, crimped and soldered to resist moisture and oxidation Black UL1015-grade insulation withstands oil, heat, and abrasion Discreet ECS label for a clean, OEM+ look Replaces OEM part number 12427549396.

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ECS Heavy Duty Ground Cable Upgrade (12427549393) - E9X, E82/E88, E84...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:48367010
Part#: 059226LA01
In Stock
New Item
Sale - Save 48% $ 39.99

This product was last offered at the strikethrough price on
02-04-2026

$ 20.99 USD
Free Shipping
Sale - Save 48%
$ 39.99

This product was last offered at the strikethrough price on
02-04-2026

$ 20.99 USD
Free Shipping

If you're experiencing hard starting, flaky charging, or other electrical issues, your engine ground strap may be the culprit. On E9X BMWs, the engine ground strap is a thin, non-insulated cable that spans from the left engine mount arm to the frame horn. Despite the seemingly simple nature of this part, on older cars, it is known to cause massive headaches. Due to its non-insulated design, years of exposure to water, dirt, and road salt will cause the wire to corrode, ultimately leading to complete failure. A break in this cable will cause an open circuit, resulting in issues with the vehicle's electrical system and potentially leading to a no-start condition.

To solve this issue, ECS has engineered an exact-fit, upgraded ground strap for your E9X BMW! Unlike its OEM counterpart, this design features insulated, large-gauge copper wire for dependable conductivity and long-lasting durability. Additionally, factory-style lugs are zinc-coated, crimped, and soldered, ensuring protection against corrosion and oxidation.

Whether you're replacing a visibly corroded strap or proactively preventing failure, this solution from ECS is sure to provide lasting performance and protection.

FEATURES

Direct-fit replacement and upgrade for RWD E82/E88, E84, and E9X applications Solves intermittent grounding issues caused by aging OEM straps Clean, stealthy design that fits seamlessly in factory engine bays Factory length and lug orientation for drop-in fitment 2 AWG tinned copper cable for excellent conductivity and corrosion resistance Zinc-coated lugs, crimped and soldered to resist moisture and oxidation Black UL1015-grade insulation withstands oil, heat, and abrasion Discreet ECS label for a clean, OEM+ look Replaces OEM part numbers 12427549393, 12427795404, and 12427790559.

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URO Power Distribution Box With Fuse - BMW E8X 1', E9X 3'
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
URO - Corporate Logo
T#:49822552
Part#: 61146971370
In Stock
New Item
$ 91.99 USD
Free Shipping on orders $49 and up
Ensures the appropriate amount of power is sent to electrical vehicle components.

Mass Air Flow Sensor
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremi - Corporate Logo
T#:47644906
Part#: 13627593624
In Stock at Vendor
New Item
$ 193.99

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

$ 188.99 USD
Free Shipping on orders $49 and up
$ 188.99 USD
Free Shipping on orders $49 and up

Battery Tender Plus Advanced Battery Charging System
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Battery Tender - Corporate Logo
T#:49892371
Part#: BTT0210128
In Stock at Vendor
New Item
$ 69.99 USD
Free Shipping on orders $49 and up
Mishimoto Ignition Coil - Single - BMW M54, N20, N52, N54, N55, N62, ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Mishimoto - Corporate Logo
T#:51075090
Part#: MMIG-BMW-02
Ships in 3 Business Days
New Item
$ 72.99 USD
Free Shipping on orders $49 and up
The Mishimoto BMW Ignition Coil is built to handle the intense heat cycles found in BMW’s modern turbocharged and naturally aspirated engines.

Hitachi Camshaft Position Sensor - BMW E9X F3X F8X N20 N52 N55 S55 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Hitachi - Corporate Logo
T#:48815454
Part#: 13627525014
Ships in 6 Business Days
New Item
$ 40.00 USD
Free Shipping on orders $49 and up
The camshaft position sensor communicates the position of the camshaft to the computer. This helps the computer to calculate proper spark and fuel control. If you're struggling with CELs, hard starts or no starts, stalling, and/or a rough idle, you may need to replace the cam position sensor.
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Hitachi Engine Crankshaft Position Sensor - BMW F2X F3X
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Hitachi - Corporate Logo
T#:48850074
Part#: 13627582842
Ships in 6 Business Days
New Item
$ 184.99 USD
Free Shipping on orders $49 and up
Engine cranks but doesn't start? This sensor is often the issue.

Vargas MAP Sensor Extension Harness - BMW B58, N54, N55, S55, S58, S6...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Vargas Turbo Technologies - Corporate Logo
T#:51672717
Part#: VTT-MAP-HARNESS
Ships in 10 Business Days
New Item
$ 59.99 USD
Free Shipping
$ 59.99 USD
Free Shipping
As part of the VTT-FAB fabrication line, this extension harness is designed for builders and tuners who need flexibility.

BMW Air Flow / Mass Meter
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Febi - Corporate Logo
T#:47644907
Part#: 13627593624
Special Order: No Guaranteed ETA
New Item
$ 214.99 USD
$ 214.99 USD
Meyle Crankshaft Pulse Sensor - BMW EXX, FXX
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Meyle - Corporate Logo
T#:52762518
Part#: 314810014
Special Order: No Guaranteed ETA
New Item
$ 19.99 USD
Free Shipping on orders $49 and up
Revitalize your vehicle’s performance and reliability with the MEYLE Crankshaft Pulse Sensor.
Hitachi Crankshaft Position Sensor - BMW N20 N26 2.0L
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Hitachi - Corporate Logo
T#:48815475
Part#: 13627595860
Back Ordered
New Item
$ 68.99 USD
Free Shipping on orders $49 and up
This is the crankshaft position sensor. It provides information for the ECU. A faulty sensor can cause issues with timing adjustment and limit performance and vehicle operation. Replace your sensor with a high-quality Hitachi sensor to restore peak performance.
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Vemo Crankshaft Position Sensor - BMW N20 N26 2.0L
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Vemo - Corporate Logo
T#:48815478
Part#: 13627595860
Special Order: No Guaranteed ETA
New Item
$ 24.99 USD
Free Shipping on orders $49 and up
This is the crankshaft position sensor. It provides information for the ECU. A faulty sensor can cause issues with timing adjustment and limit performance and vehicle operation. Replace your sensor with a high-quality Hitachi sensor to restore peak performance.
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