BMW B58 Engine Firing Order Diagram

Reading the B58B30M0 3.0L Inline-Six diagram correctly

Cylinders are numbered 1-2-3-4-5-6 in one row from the front/accessory-drive end toward the flywheel and transmission. Read the vehicle as installed and use the manufacturer's left/right convention, not the side from which you happen to be standing. The first cylinder listed in 1-5-3-6-2-4 begins the sequence but does not define a universal connector position.

BMW's G01 Powertrain technical training data lists firing order 1-5-3-6-2-4 for the B58B30M0. The B58 shares this mechanical order with the N55, but its closed-deck architecture, integrated charge-air cooling, fuel system and DME generation are different service systems. Do not infer coil, injector or harness interchangeability from the shared firing order. Identify the exact B58 revision before parts replacement, coding or high-pressure-fuel work. On coil-on-plug engines, use the diagram for cylinder identity and diagnosis; the PCM, not a physical distributor cap, schedules spark.

Which B58B30M0 3.0L Inline-Six firing order applies?

BMW's G01 Powertrain technical training data lists firing order 1-5-3-6-2-4 for the B58B30M0. The B58 shares this mechanical order with the N55, but its closed-deck architecture, integrated charge-air cooling, fuel system and DME generation are different service systems. This distinction matters because the engine can look nearly identical from above. Treat the camshaft or engine assembly as the authority when parts have been mixed. A firing order cast into an intake, copied from a generic decal, or remembered from another V8 is not enough to identify a modified engine.

The application table separates the order, cylinder banks, and ignition-system notes. Read all columns before routing. The first number in 1-5-3-6-2-4 is cylinder 1, but the physical No. 1 terminal can appear in different clock positions when a distributor has been installed on a different gear tooth.

Bank numbering and verification on the B58B30M0 3.0L Inline-Six

Do not infer coil, injector or harness interchangeability from the shared firing order. Identify the exact B58 revision before parts replacement, coding or high-pressure-fuel work.

BMW's G01 Powertrain technical training data lists firing order 1-5-3-6-2-4 for the B58B30M0. The B58 shares this mechanical order with the N55, but its closed-deck architecture, integrated charge-air cooling, fuel system and DME generation are different service systems.

Procedures used with this specification

These steps are the same for every vehicle in this family, so they are documented once rather than repeated on each page. The values above remain specific to this BMW B58B30M0 3.0L Inline-Six.