BMW 135i Engine Wiring Harnesses

The factory-installed engine wiring harness in your BMW 135i is responsible for organizing the wires, connectors, cables, and terminals that manage the various electrical components in your luxury car.

What an Engine Wiring Harness Does

The engine wiring harness in your coupe or convertible routes electrical power to such parts as the battery, alternator, windshield wipers, headlights, fuel injector, and more. Basically, anything that relies on electricity in order to work also relies on your engine wiring harness performing its role.

How to Spot a Faulty Engine Wiring Harness

Should your engine wiring harness get damaged in any way, you'll want to replace it as soon as possible. Signs yours is going bad include:

• The lights stop working even with fresh bulbs installed
• Ignition problems
• Battery issues
• Some components quit working

You Can Depend on a Genuine BMW Engine Wiring Harness

Only a BMW engine wiring harness is designed to fit your BMW 135i, and only genuine BMW engine wiring harnesses are guaranteed to offer the proper wire layout, wire splicing, and precise soldering. Search by model year to find your compatible match in our online auto parts catalog. We usually ship within two business days, though parts sourced from BMW in Germany may take two weeks or longer. Some orders qualify for overnight shipping, so be sure to ask if you need your engine wiring harness right away. Order today and save compared to the MSRP!