PURE Turbos Stage 2 Turbo Upgrade 2016-2021 BMW B46 B48 330i 430i

The B46 and B48 2.0L in the 230i, 330i, 430i, 530i and the X1, X2, X3 and X4 is a strong modern four, and its factory turbo is the part that limits a tune. PURE Stage 2 rebuilds that turbo around a larger billet compressor wheel and a high-flow turbine wheel while keeping the BMW housing, so it bolts in where the original was. PURE rates it at more than 400 wheel horsepower with fuel, supporting mods and a custom tune.

What PURE changes inside

PURE fits a billet compressor wheel and a high-flow turbine wheel sized for the B46 and B48, 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.

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
• Supports 400+ whp with fuel, supporting mods and tune

What's Included

One upgraded B46 or B48 turbocharger built on the factory housing. Not included: gaskets, oil lines, coolant lines or the tune.

Specifications

Fitment notes

Fits the first-generation B46 and B48 cars listed below, US model years. Pick the B46 or B48 core deposit to match your engine. It does not fit the X2 M35i, the N20 cars or the 2020 and later G-chassis 2.0L cars; call us before ordering for any car not listed.

Fitment