BMW E60 E61 E63 E64 545i 645Ci N62 Wiring Loom Harness Engine Ignition 7535738

BMW E60 E61 E63 E64 545i 645Ci N62 Wiring Loom Harness Engine Ignition is an original engine ignition wiring harness designed for N62 units in BMW 5 and 6 series models. The component belongs to the Wires, harnesses and connectors group, ensuring a proper electrical connection between the ignition system components and the engine control unit. This used OEM part allows for maintaining the factory installation architecture without the need for modifications.

Specifications and technical data

• SKU: rhd-7535738
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7535738
• Substitutable numbers: 12517535738, 7535738, 12517528922, 7528922, ŁS
• Category: Wiring Harnesses, Cables & Connectors

Purpose and function in the engine system

This harness is designed to operate within the N62 engine area, where it is responsible for stable, interference-resistant electrical connections for ignition components. A properly selected harness reduces the risk of abrasion, circuit breaks, and communication errors, which translates into smooth engine operation and correct interaction with the control electronics.

The original BMW solution ensures proper wire routing, correct section lengths, and appropriate connector placement, which facilitates installation and maintenance in the engine bay. As a result, the factory installation logic is preserved, and the risk of incorrect connection is minimized.

Construction, connectors and compatibility

The harness belongs to the Wires, harnesses and connectors category, which means it includes a set of wires with factory terminals and connectors matched to the ignition system and engine control components. The connectors used are prepared for operation in the demanding environment of the engine bay, taking into account temperature, vibration, and humidity.

As a BMW OEM component, the harness is structurally adapted to specific 5 series (E60, E61) and 6 series (E63, E64) models with 545i and 645Ci engines, which allows for consistency with factory service documentation and electrical diagrams. Thanks to this, installation can be carried out in accordance with the manufacturer's procedures, without the need for adapting universal solutions.

Benefits of using an original BMW harness

Using an original ignition harness in an N62 engine provides a number of practical benefits:

• maintaining factory compatibility with engine accessories and the ECU,
• consistency with original BMW electrical diagrams,
• organized wire routing in the engine bay,
• reduced risk of failures resulting from makeshift installation repairs.

The used OEM part is a solution that allows you to balance cost control with high quality and fitment. For vehicles used intensively, this is particularly important in the context of long-term ignition system reliability.

Condition, installation and service application

The item comes from dismantling and is intended for re-installation in BMW vehicles with the appropriate engine configuration. The harness will work well both when replacing a damaged installation and during a comprehensive engine bay rebuild after mechanical or electrical repairs.

Due to the factory fitment, installation can be carried out in a plug-and-play manner, using original mounting points and wire routing paths. This reduces service time and minimizes the risk of assembly errors, which is important when repairing advanced BMW units.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as additional harnesses, wires, or connectors, check the available parts in the BMW Wires, harnesses and connectors category.

To better plan your purchases and efficiently complete a set of original used parts for repair, it is worth checking out our one-stop-shop guide describing the selection of components from the engine to small accessories: Comprehensive supply: how to complete used car parts in one place.