Unlock the Full Potential of the B58

The Toyota MK5 Supra has proven itself as one of the most capable modern performance platforms, powered by the turbocharged B58 inline-six engine. While the factory direct-injection system performs well, it can become a limiting factor when pushing for higher horsepower levels. That’s where the Radium Engineering Port Injection Kit comes in—a precision-engineered solution designed to enhance fueling, improve atomization, and deliver the consistency needed for serious builds.

Clean, Factory-Style Fitment

The heart of this system is the injector plate, which installs seamlessly between the intake manifold and cylinder head. The result is a clean, factory-style appearance that doesn’t compromise the engine bay layout. By maintaining OEM-like integration, the Radium kit provides additional fueling capacity without the messy routing or questionable fitment that comes with universal solutions.

It’s important to note that fuel injectors are sold separately, giving tuners the flexibility to select injectors best suited for their power goals and calibration. This allows for true customization, whether you’re targeting reliable street power or building a high-boost, track-focused setup.

Performance Benefits for the B58 Platform

Adding port injection to the B58 Supra engine provides a host of benefits that go beyond simply adding more fuel. By improving fuel atomization, the kit enhances throttle response, reduces the risk of lean conditions under heavy load, and ensures more precise fueling at high horsepower levels. For builds running larger turbos, upgraded intercoolers, or ethanol blends like E85, the Radium kit is the missing link to achieve consistent, reliable performance.

Beyond performance, port injection also helps combat carbon buildup on intake valves—a known issue in direct-injection-only setups. This means your Supra not only gains more power potential but also benefits from improved long-term engine health.

Built with Precision and Reliability in Mind

Every Radium Engineering product is manufactured with uncompromising quality, and the Supra Port Injection Kit is no exception. Constructed from precision CNC-machined components and designed to withstand the demands of high-boost, high-heat applications, the kit is built to last. With a reputation for reliability in professional motorsports and enthusiast communities alike, Radium Engineering ensures that every component is as durable as it is functional.

Complete Your Supra Fueling System

The port injection kit is just one part of Radium’s complete fuel system upgrade lineup for the Toyota MK5 Supra. Paired with complementary components such as fuel rails, regulators, and plumbing solutions, you can build a fueling system that supports everything from moderate bolt-on upgrades to full race builds. With the Radium Engineering MK5 Supra Port Injection Kit, you’re not just adding fueling capacity—you’re building a foundation for performance you can trust.