BMW / Toyota / Ineos B58

BMW / Toyota / Ineos B58

The BMW B58 Engine: Versatility, Power, and Limitless Potential

Since its introduction in 2015, the BMW B58 engine has become a cornerstone of modern performance. Replacing the N55 inline-six, the B58 debuted in the F30 340i and marked the beginning of BMW’s new modular engine architecture. With its turbocharged inline-6 layout, closed-deck block design, and forged internals, the B58 quickly earned a reputation for both daily reliability and exceptional tuning headroom.

A Global Powerhouse: BMW, Toyota, and Ineos

One of the unique aspects of the B58 is its presence across multiple automotive brands and platforms. While it began life under BMW’s hood, it has since expanded far beyond.

  • BMW Applications: The B58 is found in a wide range of models, including the 2 Series M240i, 3 Series 340i/540i, Z4 M40i, X3 M40i, and more. Each platform offers different tunes and packaging, but all share the same potent core.
  • Toyota Applications: Most famously, Toyota selected the B58 for the GR Supra, a move that stirred controversy but ultimately proved wise. Tuners quickly discovered the Supra’s B58 was capable of handling serious power, even with only mild upgrades.
  • Ineos Applications: Even the rugged Ineos Grenadier adopted the B58 in its lineup, demonstrating the engine’s durability and adaptability in off-road and utility vehicles.

B58 Evolution: Gen 1 vs Gen 2

The original Gen 1 B58 (B58B30M0) ran from 2015 through roughly 2019 and featured a twin-scroll turbo, direct injection, and an integrated water-to-air intercooler. In 2019, BMW introduced the Gen 2 B58 (B58B30O1), which came with several enhancements:

  • Higher-pressure fuel system (up to 350 bar)
  • Larger turbocharger
  • Improved cooling
  • Lighter components and revised engine internals

The Gen 2 B58 delivers more efficiency and slightly better performance while preserving the reliability and tuning potential that enthusiasts love.

Performance Potential and Racing Applications

What makes the B58 truly exceptional is its ability to handle significant power gains with relatively few upgrades. Stock internals have been known to tolerate over 600 horsepower with proper fueling and tuning. This makes it an ideal platform for both street and motorsport builds.

  • Drag racing and roll racing: The B58 has seen immense success in these disciplines, particularly within the GR Supra community.
  • Time attack and circuit racing: With proper cooling, oiling, and fueling systems, the B58 can handle extended abuse at the track.

Maximize B58 Potential with a 3.4L Stroker Kit

For those seeking ultimate performance, 5150 AutoSport offers the first 3.4L B58 Stroker Kit on the market, featuring:

  • 4340 Billet Steel Stroker Crankshaft
  • CP-Carrillo Pro-Xtreme Rods and Pistons
  • 5150 Xtreme Duty Cylinder Sleeves

This stroker kit transforms the B58 into a torque-rich, high-revving beast with added displacement and strengthened components—ideal for big-boost applications, race builds, and pushing past the limits of what a stock engine can handle.

Complete B58 Support: From OEM+ to All-Out Track Builds

Whether you're upgrading your street car for refined OEM+ performance or assembling a 1,000+ horsepower race engine, 5150 AutoSport offers a massive catalog of B58 performance parts:

  • Head studs, main studs, and rod bolts from ARP
  • Coated bearings for race and street use
  • CNC-machined cylinder head services
  • Custom camshafts, turbo upgrades, and fuel system solutions

Our parts and engine services are trusted by performance shops and racing teams worldwide.

The B58 is more than just a modern engine—it’s a platform. With support across multiple brands, two generations of improvements, and proven capability on the street and track, it continues to be one of the most exciting engines available today. And with products like our 3.4L stroker kit, 5150 AutoSport helps you take it even further.

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