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BMW Engine Electrical Harnesses

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Motiv ReFlex Plug-n-Play Ethanol Sensor Harness

ES#4731941 - 101-0212 - Motiv ReFlex Plug-n-Play Ethanol Sensor Harness - For Vehicles With Motiv ReFlex Unit Currently Installed - Motiv Motorsports - BMW

For Vehicles With Motiv ReFlex Unit Currently Installed For Vehicles With Motiv ReFlex Unit Currently Installed Only

Brand:
Motiv Motorsports - Corporate Logo
ES#:
4731941
Mfg#:
101-0212
In Stock
$49.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ReFlex+ Main Injector Harness - Inline-6

ES#4810312 - 900.1008 - ReFlex+ Main Injector Harness - Inline-6 - Main Injector Harness For Installation of ReFlex+ For Inline-6 BMW Engines - Motiv Motorsports - BMW

Main Injector Harness For Installation of ReFlex+ For Inline-6 BMW Engines

Brand:
Motiv Motorsports - Corporate Logo
ES#:
4810312
Mfg#:
900.1008
In Stock
$200.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heavy Duty Ground Cable Upgrade (12427549393)

ES#4939983 - 059226LA01 - Heavy Duty Ground Cable Upgrade (12427549393) - Restore lasting electrical reliability to your E9X with a high-quality, corrosion-proof ground strap engineered for long-term performance. - ECS - BMW

Restore lasting electrical reliability to your E9X with a high-quality, corrosion-proof ground strap engineered for long-term performance. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4939983
Mfg#:
059226LA01
Ships in 5 Business Days
ON SALE! SAVE 42%
$39.99

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

$23.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Engine Harness

ES#2079697 - 12517592508 - Engine Harness - Genuine BMW - BMW

Brand:
Genuine BMW - Corporate Logo
ES#:
2079697
Mfg#:
12517592508
Ships in 4 Business Days
5% off MSRP

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

$174.99

This product was last offered at the strikethrough price on
06-03-2026

$166.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Heavy Duty Ground Cable Upgrade (12427549396)

ES#5374205 - 059226LA02 - Heavy Duty Ground Cable Upgrade (12427549396) - Restore lasting electrical reliability to your E9X with a high-quality, corrosion-proof ground strap engineered for long-term performance. - ECS - BMW

Restore lasting electrical reliability to your E9X with a high-quality, corrosion-proof ground strap engineered for long-term performance. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
5374205
Mfg#:
059226LA02
In Stock
ON SALE! SAVE 42%
$39.99

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

$23.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Engine wiring harness

ES#30842 - 12517501135 - Engine wiring harness - New DME wire harness - Genuine BMW - BMW

New DME wire harness For vehicles with Manual transmission

Brand:
Genuine BMW - Corporate Logo
ES#:
30842
Mfg#:
12517501135
In Stock
3% off MSRP

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

$1683.99

This product was last offered at the strikethrough price on
07-20-2026

$1639.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ReFlex+ Install Harness - Flying Lead

ES#4810316 - 900.1016 - ReFlex+ Install Harness - Flying Lead - Universal - Flying Lead Installation Harness - Motiv Motorsports - BMW

Universal - Flying Lead Installation Harness

Brand:
Motiv Motorsports - Corporate Logo
ES#:
4810316
Mfg#:
900.1016
In Stock
$95.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Wiring Harness For DME+ASC

ES#30798 - 12511748890 - Engine Wiring Harness For DME+ASC - Genuine BMW - BMW

Brand:
Genuine BMW - Corporate Logo
ES#:
30798
Mfg#:
12511748890
Ships in 4 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.

$1456.99

This product was last offered at the strikethrough price on
07-20-2026

$1418.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Heavy Duty Ground Cable Upgrade (12421737755)

ES#4939982 - 059235LA01 - Heavy Duty Ground Cable Upgrade (12421737755) - Restore lasting electrical reliability to your E30, E36, or E46 with a high-quality, corrosion-proof ground strap engineered for long-term performance. - ECS - BMW

Restore lasting electrical reliability to your E30, E36, or E46 with a high-quality, corrosion-proof ground strap engineered for long-term performance. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4939982
Mfg#:
059235LA01
In Stock
ON SALE! SAVE 20%
$29.99

This product was last offered at the strikethrough price on
06-13-2026

$23.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Wiring Harness - Engine Module

ES#31026 - 12517566504 - Wiring Harness - Engine Module - Genuine BMW - BMW

Brand:
Genuine BMW - Corporate Logo
ES#:
31026
Mfg#:
12517566504
Ships in 4 Business Days
5% off MSRP

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

$609.99

This product was last offered at the strikethrough price on
07-20-2026

$581.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Heavy Duty Ground Cable Upgrade (12427557027)

ES#4939981 - 059261LA01 - Heavy Duty Ground Cable Upgrade (12427557027) - Restore lasting electrical reliability to your E70/E71 with a high-quality, corrosion-proof ground strap engineered for long-term performance. - ECS - BMW

Restore lasting electrical reliability to your E70/E71 with a high-quality, corrosion-proof ground strap engineered for long-term performance. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4939981
Mfg#:
059261LA01
Ships in 5 Business Days
ON SALE! SAVE 25%
$29.99

This product was last offered at the strikethrough price on
06-13-2026

$22.49 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

FRONT RIGHT REPAIR WIRING SE

Brand:
Genuine BMW - Corporate Logo
ES#:
2728472
Mfg#:
61119327505
Ships in 6 Business Days
2% off MSRP

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

$1117.99

This product was last offered at the strikethrough price on
07-20-2026

$1094.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

WIRING HARNESS FOR E

ES#2611914 - 61119307555 - WIRING HARNESS FOR E - Genuine BMW - BMW

Brand:
Genuine BMW - Corporate Logo
ES#:
2611914
Mfg#:
61119307555
Ships in 4 Business Days
5% off MSRP

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

$371.99

This product was last offered at the strikethrough price on
07-20-2026

$354.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Engine Wiring Harness

ES#30883 - 12517513554 - Engine Wiring Harness - Connects the ECU to various engine components - Genuine BMW - BMW

Connects the ECU to various engine components For vehicles with production date up to 03/2003

Brand:
Genuine BMW - Corporate Logo
ES#:
30883
Mfg#:
12517513554
Ships in 4 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.

$517.99

This product was last offered at the strikethrough price on
07-20-2026

$504.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

E46 Engine Wiring Harness

ES#30907 - 12517523220 - E46 Engine Wiring Harness - Connects the ECU to various engine components - Genuine BMW - BMW

Connects the ECU to various engine components For vehicles with production date from 03/2003

Brand:
Genuine BMW - Corporate Logo
ES#:
30907
Mfg#:
12517523220
Ships in 4 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.

$517.99

This product was last offered at the strikethrough price on
07-20-2026

$504.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Schwaben Self-Adjusting Wire Crimper & Stripper Pliers

ES#4826864 - 3774SCH01A - Schwaben Self-Adjusting Wire Crimper & Stripper Pliers - Make wiring harness repairs with ease! Featuring adjustable, ratcheting wire stripper jaws for efficient insulation removal. - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

Make wiring harness repairs with ease! Featuring adjustable, ratcheting wire stripper jaws for efficient insulation removal. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
4826864
Mfg#:
3774SCH01A
In Stock
ON SALE! SAVE 15%
$22.99

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

$19.54 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Electrical Harnesses

Wiring gremlins are no fun. Many times, it's easier to just replace the harness than track down the short, sometimes that's all you can do. We offer full wiring harness replacements for your repair or to set your build up for success and keep everything communicating as it should.

Other BMW Engine Electrical Harnesses

Let us help you find the parts that fit your BMW

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Manufacturer names and/or part numbers are used only for identification purposes.

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