Sale

Air and Fuel Fuel Injection Systems and Components - Electronic

Bosch

650cc/min Fuel Injectors

$524.95 $498.70 Save $26.25

SKU: 53-390650-4

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In Stock
Ships by Aug 5
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INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Bosch 650cc/min (62lb/hr) fuel injectors are specifically engineered for high-performance and race applications, offering a significant upgrade over stock for Gen 1 MINI Coopers. These injectors are capable of supporting race engine builds up to 400 HP, operating at a 90% duty cycle with 3 BAR pressure. Constructed from brand new Bosch 550cc bodies, these injectors undergo precision micro-drilling to enhance flow capabilities. Each set is dynamically flow tested to guarantee they meet exact specifications and are meticulously matched to ensure consistent performance across all cylinders. Detailed test results are provided with each kit. The kit includes four genuine Bosch 650cc/min injectors. To ensure seamless integration with the factory MINI wiring harness, four custom electrical adapters are also provided, converting the Bosch connector to the Siemens Fuel Injector type used by MINI. It is important to note that these injectors are not recommended for street-driven MINIs unless the ECU is tuned, a closed-loop Lambda sensor is installed, boost is increased, and other power-enhancing modifications are implemented. The source explicitly states that these injectors provide 1.7X more fuel flow than standard JCW 380cc injectors and 2X more than standard "S" 330cc injectors, making them a substantial upgrade for demanding applications.

MIA's Description

The Bosch 650cc/min fuel injectors are designed for high-performance and race applications. These injectors flow 62 lbs/hr (650cc/min) at 3 BAR (43.5 PSI) and are ideal for Gen 1 MINI Cooper race engine builds up to 400 HP at 90% duty cycle.

These injectors are custom-made from new Bosch 550cc bodies, precision micro-drilled for increased flow. Each set is dynamically flow tested to ensure specification compliance and matched for even cylinder-to-cylinder performance, with test results included. The kit includes four injectors and four custom electrical adapters to connect to the factory MINI loom.

Fitment

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Specifications

BrandBosch
Part Number53-390650-4
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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