Air and Fuel› Superchargers, Turbochargers and Components

Tomei

Arms BX7960 B/B Turbocharger Kit

$1,602.00

SKU: TB403A-SB01B

In Stock
In Stock
Ships by Sep 9
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$100 Minimum Order
30 Days Return
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Overview

The Tomei B/B Turbocharger Kit Arms BX7960 is a single-scroll turbocharger designed for Subaru EJ engines. It features a CNC billet compressor wheel for improved airflow and spool, and a multi-rate billet actuator with six included springs for fine boost adjustment. This turbocharger is rated for 400 HP.
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The Tomei B/B Turbocharger Kit Arms BX7960 is a single-scroll turbocharger engineered for Subaru EJ engines, offering significant performance enhancements. It utilizes a CNC billet aluminum compressor wheel, machined from aerospace-grade materials, which provides a lighter weight and thinner blade design compared to traditional cast wheels. This results in greatly improved airflow, quicker turbo spool, and enhanced performance figures. The kit also includes a multi-rate billet actuator, featuring a large capacity and reinforced forged billet construction. For precise boost control, it comes with a total of six springs, allowing users to combine up to three to achieve their desired setup. A swivel-type nipple on the actuator facilitates easier hose routing. This turbocharger is specifically designed for EJ single-scroll engines and has a 400 HP rating. It is compatible with a wide range of Subaru models, including various years of the WRX, STI, Legacy, Forester, and Saab 9-2x Aero, as well as some Legacy GT and Outback models. The kit comes complete with the turbocharger, an internal wastegate (IWG), and all necessary installation hardware, including lines. It is important to note that support modifications may be required for optimal performance and integration. Buyers should consult the provided setup reference guide for detailed information.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandTomei
Part NumberTB403A-SB01B
CategoryAir and Fuel

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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