Spool Performance Billet Manifold B58 Gen 2 Top Mount Turbo Kit – BMW

Unlock the full performance potential of the BMW B58 Gen 2 engine with the Spool Performance Billet Manifold Top Mount Turbocharger Kit, engineered for high-power single turbo builds on BMW and Toyota Supra platforms.

This premium turbo system features a CNC-machined billet exhaust manifold designed for durability, optimized exhaust flow, and improved turbo response. The top-mount configuration provides easier access for turbo servicing and allows compatibility with a wide range of performance turbochargers used in high-horsepower builds.

The kit is designed as a complete turbo conversion solution, including the essential fittings and hardware needed for turbo oil feed, oil drain, and coolant routing. Spool Performance includes AN fittings for oil and water connections, helping simplify installation while supporting reliable lubrication and cooling for the turbocharger.

Engineered specifically for the B58 Gen 2 platform, this system is commonly used for high-output street builds, drag setups, and custom performance applications where the factory turbo becomes a restriction. The modular design allows builders to select the turbocharger size and configuration best suited for their horsepower goals.

The B58 engine, used across many BMW models and the Toyota Supra, is well known for its strength and tuning potential, making it an ideal platform for large single-turbo upgrades.

Key Features

• CNC-machined billet exhaust manifold for durability and strength
• Top-mount turbocharger design for improved access and heat management
• Compatible with many T4 performance turbochargers
• Includes AN fittings for oil feed, oil drain, and coolant connections
• Designed for BMW B58 Gen 2 engines
• Ideal for high-horsepower single turbo builds
• Modular turbo options to match power goals
• Engineered for performance street and race applications

Compatible Platforms (Typical Applications)

• BMW 340i / 440i
• BMW M240i / M340i / M440i
• BMW 540i / Z4
• Toyota GR Supra (B58 engine)

(Always verify engine generation compatibility before purchase.)

Turbochargers:

The Kit is offered in a variety of PTE air-cooled and Spool IFX water-cooled ceramic ball-bearing turbos as follows:

PTE 6466 Gen2 Ball Bearing Air Cooled -900HP - 1 year warranty

PTE 6870 Gen2 Ball Bearing Air Cooled -1100HP - 1 year warranty

SPOOL IFX-900 Ball Bearing Water Cooled -900HP - Lifetime warranty

SPOOL IFX-1050 Ball Bearing Water Cooled - 1050HP - Lifetime warranty

SPOOL IFX-1200 Ball Bearing Water Cooled - 1200HP - Lifetime warranty

* SPOOL IFX-1400 Ball Bearing Water Cooled - 1400HP - Lifetime warranty

*available on special request. IFX-1400 utilizes a different riser on the manifold accounting for a bigger wastegate and positioning correction for the bigger frame.

Accessories:

Our kit is designed to be a true plug-and-play solution. Included with the kit are AN fittings for oil feed and drain, water feed and drain (Spool IFX Turbos), and a water bypass (Precision Turbos and others). We are also offering an optional catch-can solution that is a true plug-and-play solution. A corrosion-resistant 304 stainless steel mandrel bent downpipe and dump tube are also included. We are also offering the turbo compressor cover in a color of your choice (default red) and cerakote thermal coating for the hot parts. The following is a list of included and optional parts: