Wagner Tuning BMW/Toyota B58 Intake Manifold

Wagner Tuning BMW/Toyota B58 Cast Aluminium Intake Manifold

The Wagner Tuning cast aluminium intake manifold is a serious performance upgrade developed for the B58 engine, found in a range of BMW models and the Toyota Supra GR MK5. Built for high-output and racing applications, it replaces the standard manifold with a stronger, better-flowing design that supports significantly higher power levels than the OEM unit can reliably handle.

Unlike the factory manifold, which integrates a water-cooled intercooler, this Wagner unit is a dedicated race-focused design. It is intended for builds running an external chargecooler or air-to-air intercooler setup, freeing up airflow and giving tuners far more headroom for big power figures.

Key Features

• Multi-piece cast aluminium construction for strength and consistent airflow
• Screw-in intake funnels (trumpets) optimise flow into each cylinder
• Provision for additional intake manifold injection, with fuel rail included for port injection support
• Silicone hose adapter supplied for connection to the throttle body
• Designed for high-power race and motorsport conversions

Why Upgrade the B58 Intake Manifold?

The standard B58 manifold is a known restriction once the engine is pushed beyond stock power levels. Its integrated water-to-air intercooler, while effective on a factory car, becomes a bottleneck on heavily tuned builds and limits how much air can be moved efficiently into the cylinders. The Wagner manifold removes this restriction entirely, offering a cleaner intake path, better cylinder filling and the ability to support far more aggressive turbo and fuelling setups.

The added port injection fuel rail is a major benefit for high-power builds. Running supplementary port injection alongside the factory direct injection helps deliver the extra fuel demanded by big turbo conversions and reduces the carbon build-up commonly seen on direct-injection engines.

What’s Included

• 1x cast aluminium intake manifold
• 1x fuel rail for additional port injection
• 1x silicone hose adapter for the throttle body

Important: This is not a plug-and-play product. The factory water-cooled intercooler housed within the original intake manifold is removed when fitting this unit, so a suitable replacement charge cooling solution must be in place. Installation requires custom fabrication, tuning and fuel system work, and should only be carried out by an experienced professional. This manifold is intended for racing and custom-built applications.

Fitment

Designed for the BMW and Toyota B58 engine, as fitted to a wide range of BMW models (including 40i variants) and the Toyota Supra GR MK5. Please use the vehicle lookup tool or check the Vehicle Fitment tab to confirm compatibility with your specific car.

For tuners and engine builders chasing serious power from the B58 platform, the Wagner Tuning cast aluminium intake manifold provides the airflow capacity and fuelling support needed to take the engine well beyond its factory limits.