The BMW B58 engine is a highly regarded inline-six turbocharged engine that has gained a reputation for its performance, reliability, and tuning potential. Introduced in 2015 as part of BMW’s modular engine family, the B58 replaced the outgoing N55 engine and brought significant improvements in power output, efficiency, and refinement. It powers several BMW models, including the 3 Series, 4 Series, 5 Series, Z4, and Toyota Supra, making it a popular choice among enthusiasts and performance car buyers.

Performance and Specifications
The BMW B58 engine features a 3.0-liter displacement, a single twin-scroll turbocharger, and direct fuel injection. It produces varying power outputs depending on the model and tune level, ranging from 322 to 382 horsepower and around 369 to 369 lb-ft of torque in stock form. Some high-performance versions, such as the B58B30O1 used in the M340i and Z4 M40i, deliver even higher outputs. The engine’s combination of power and efficiency makes it a favorite among drivers looking for a balance of performance and daily drivability.
One of the key improvements over the N55 is the addition of an integrated water-to-air intercooler and a closed-deck block design, which enhances durability under high boost levels. The B58 engine also benefits from an improved cooling system, a lower compression ratio for better forced induction efficiency, and a stronger crankshaft.
Reliability and Longevity
BMW designed the B58 engine with reliability in mind, and it has proven to be one of the more durable modern BMW engines. Compared to its predecessor, the B58 has fewer issues with oil consumption and carbon buildup. Routine maintenance, such as regular oil changes and proper cooling system care, helps ensure a long lifespan. Many owners report that the B58 engine can handle significant mileage without major issues, making it an attractive option for those looking for performance without sacrificing dependability.
Tuning Potential
The BMW B58 engine is widely known in the tuning community for its impressive aftermarket potential. With simple modifications such as an upgraded intake, high-flow downpipe, and ECU tuning, the engine can easily exceed 450 horsepower while maintaining reliability. More extensive upgrades, such as larger turbochargers and forged internals, can push the power output well beyond 600 horsepower. This makes it an ideal choice for performance enthusiasts looking for an engine that responds well to modifications.
B58 Engine for Sale
For those looking for a BMW B58 engine for sale, there are several options available. New and used engines can be found through various sources, including BMW dealerships, auto parts stores, and online marketplaces like eBay, Facebook Marketplace, and specialized BMW forums. When purchasing a B58 engine for sale, it’s essential to check the engine’s mileage, condition, and history. Engines sourced from wrecked vehicles can offer a more affordable option but should be inspected for damage.
Many tuning shops and performance parts suppliers also offer BMW B58 engines for sale, often with upgraded components or built-in modifications. Whether looking for a stock replacement or a high-performance build, the B58 engine remains a top choice for BMW enthusiasts and tuners alike.