BMW B48C Turbocharger 11658662071 - Genuine OEM Replacement for G20/G21 320i/320ix, G30 520i, G01 X3 20i/20ix/30ex, G02 X4 20ix (2018-2019)

OE B48C Turbo Unit, Part No. 11658662071

Restore crisp boost, smooth power delivery and factory reliability with this authentic BMW turbocharger for B48C 2.0 petrol engines. This is the original equipment, dealer-supplied turbo unit specified for selected G series models from 2018 to 2019, giving you the exact fit and calibration your car left the factory with. If your stock blower is whistling, smoking or down on performance, this direct-fit replacement puts things right without compromise.

Part number: 11658662071. Manufactured by BMW. Genuine OE component for B48C engine code applications.

Why this OE turbo makes sense

• Original equipment turbocharger for B48C engines, engineered by BMW for perfect integration
• Direct fit, bolt-on replacement that maintains factory drivability and efficiency
• Built to BMW durability standards for long-term reliability and consistent boost control
• Ideal solution when the original unit has play, oil leakage or boost faults
• Installed by us on customer vehicles with excellent feedback on refinement and response
• Supplied as an authentic BMW part, not a pattern or remanufactured substitute

Vehicle applications, B48C engine, 2018 to 2019

• 3 Series
  • G20 320i and 320i xDrive, production approx. 06 2018 to 12 2019
  • G21 320i Touring, production approx. 10 2018 to 12 2019
• 5 Series
  • G30 520i, production approx. 07 2018 to 12 2019
• X models
  • G01 X3 20i, 20i xDrive and 30e xDrive, production approx. 05 2018 to 12 2019
  • G02 X4 20i xDrive, production approx. 05 2018 to 12 2019

What you get

• Complete turbocharger assembly as supplied by BMW
• OE quality, correct geometry and flow for B48C applications

Warranty

Manufacturer warranty up to two years for UK customers and one year for international customers when a compatible VIN is provided at checkout.

Professional fitting

Installation by a specialist is recommended. MJ Modifications in Warwickshire can supply and fit this part. To request a fitting quote, email info@mjmodifications.co.uk.

We advise replacing gaskets, seals and hardware during installation, and performing a fresh oil and filter service to protect the new unit.

Compatibility check before dispatch

We verify fitment before shipping. Please provide your UK registration number or the last 7 digits of your VIN at checkout so we can confirm this is the correct B48C turbo for your vehicle.

Search terms customers use

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Key identifiers

• Part number: 11658662071
• Engine code: B48C
• Platform: G series 3 Series, 5 Series, X3, X4, selected 2018 to 2019 models