PURE Turbos PURE650 Turbo Upgrade 2020-2024 BMW B58 Gen 2

The PURE650 rebuilds the factory BMW B58 Gen 2 turbo around larger, more efficient wheels while keeping the OEM housing. Because it starts from a factory turbo, PURE can build it for both the 6-port cars (M340i, M440i, M240i, Z4 M40i, X3 and X4 M40i) and the 2-port cars (540i and X5, X6 and X7 40i). It supports more than 600 wheel horsepower with fuel, supporting mods and a custom tune, and ships with the PURE Hi-Flow Inlet.

What PURE changes inside

PURE fits a billet compressor wheel and a high-flow turbine wheel sized for the B58 Gen 2, then upgrades the center housing rotating assembly (CHRA) to handle the higher shaft speed and boost. Every unit is balanced on a VSR high-speed balancer before it ships. The factory compressor and turbine housings are kept, so the turbo mounts in the factory location and works with the factory plumbing and heat shielding, with no cutting or fabrication.

How the core charge works

PURE builds this upgrade from a factory turbocharger core, so you choose how to supply one when you order:

• Send in your turbo first (no deposit): you ship your factory turbo to PURE, it is rebuilt to this spec and shipped back. You pay only the upgrade price.
• Pay a refundable core deposit: PURE ships a finished upgrade from stock right away. The deposit shown in the option name is added to the price, and it is refunded in full when PURE receives your old turbo in rebuildable condition within 60 days of delivery.

Before you ship a core, remove the oil lines, coolant lines, actuators and inlets. Cores that arrive damaged or incomplete may not get the full refund, so call us before you send one if you are unsure.

If you pay a deposit, pick the 6-port option for the M340i, M440i, M240i, Z4 M40i, X3 and X4, or the 2-port option for the 540i and X5, X6 and X7 40i.

Warranty and use

PURE backs its turbo upgrades with a limited 1-year, unlimited-mile warranty. A custom ECU tune is required, and the warranty assumes a qualified tuner and installer. This part is for off-road and competition use only and is not legal for street use in California or other states with similar emissions rules.

Features

• Billet compressor wheel for more airflow at the same shaft speed
• High-flow turbine wheel that reduces exhaust back pressure
• Upgraded CHRA, VSR balanced for durability at high boost
• Factory housing and mounting points, no fabrication
• Available for 6-port and 2-port manifold cars
• PURE Hi-Flow Inlet included
• Supports 600+ whp with fuel, supporting mods and tune

What's Included

One upgraded B58 Gen 2 turbocharger built on the factory housing; one PURE Hi-Flow Inlet. Not included: gaskets, oil lines, coolant lines or the tune.

Specifications

Fitment notes

For B58 Gen 2 cars only; it does not fit the first-generation B58. The GR Supra uses the same engine and has its own PURE pages. US model years are listed. For the 640i, 740i and 840i, call us to confirm fitment before ordering.

Fitment