B58 · Modular inline six
One family appears in both a 340i and a 740i. What is shared, and what still needs checking?
BMW identifies B58 as the inline-six engine used in the 2016 340i and 740i.
The source documents the B58 inline-six family in the 2016 340i and 740i. A shared family name does not establish identical installation details.
Family names such as N55 and B58 cover multiple versions and applications. Production date, market and the complete engine designation matter. Look up a documented example instead of assuming every digit follows one universal rule.
An engine family is not a parts-compatibility guarantee. Changes within a family may alter cooling, fueling, control software or packaging. Use the full vehicle identification and official model documentation when establishing an exact variant.
Think it throughTwo component listings both mention B58, but only one identifies the exact vehicle and production application. Which listing gives you stronger evidence for a particular car, and why?
Show the reasoning
The listing matched to the exact application provides more relevant evidence. The family is a starting category; variant and production details narrow it to the vehicle being considered.
- Recall both sourced 2016 applications: 340i and 740i.
- Carry variant and application beyond the family code.