BMW X4 xDrive30I Engine Replacement - Rebuilt & Reconditioned Units from £3,200

BMW X4 xDrive30i Engines for Sale | Engine Finders

Need a BMW X4 xDrive30i replacement engine? Owners often face timing chain wear or turbocharger calibration issues in the B48B20A engine. We provide rebuilt and reconditioned units tailored to your model’s unique needs.

BMW X4 xDrive30i Replacement Engines

The X4 xDrive30i was introduced in the second-generation X4 lineup (G02, 2018-2023), powered by the 2.0L B48B20A turbocharged petrol engine. Earlier E84 and F26 X4s did not carry this trim, making the G02 generation the most relevant for this model. A common issue in these engines is premature timing chain wear and injector carbon buildup. BMW Service Bulletin SI B11 09 18 addresses timing chain rattle and tensioner issues for the B48. Unlike diesel variants, the petrol X4 xDrive30i faces high-pressure fuel pump concerns and occasional VANOS calibration faults. This model-specific replacement guide ensures you address X4 xDrive30i failures directly, avoiding confusion with other trims like the 20i or 28i.

BMW X4 xDrive30i Models & Engines Codes

The X4 xDrive30i relies on petrol B48 series engines optimized for the G02 platform. Below are the key codes and known issues.

• B48B20A (2018-2023, G02): 2.0L turbocharged petrol, known for timing chain rattle and HPFP issues. OEM tensioner part: 11318618318.
• B48B20B (facelift models): Updated version with revised cooling system, fewer injector failures but still susceptible to VANOS solenoid wear.
• B48B20O0: Euro 6 compliant variant, tuned differently for emissions; unique calibration sometimes causes turbo lag in the X4 application.
• B48TU (Technical Update 2020): Improved oil passages, reducing consumption issues noted in early B48 engines of the X4 xDrive30i.

While the B48 engine appears across BMW models, in the X4 xDrive30i its heavier body and xDrive system cause higher strain on timing components compared to the lighter 3 Series 330i.

Buy Used and Second-Hand BMW X4 xDrive30i Engines

When sourcing a replacement, X4 xDrive30i owners can choose from several engine types depending on budget and reliability goals.

• Used Engines: Low-mileage B48B20A engines salvaged from accident-damaged vehicles.
• Reconditioned Engines: Inspected and refreshed with critical gaskets, seals, and timing chain kits.
• Rebuilt Engines: Full teardown with replacement of worn internals, ideal for B48 timing chain failures.
• Remanufactured Engines: Factory-standard rebuilds using OEM components, best for long-term use.

For the X4 xDrive30i, we recommend rebuilt or remanufactured options, as these directly address known weak points in the B48 engine family.

BMW X4 xDrive30i Engines in Stock

Our reconditioned X4 xDrive30i engines include critical updates to extend lifespan and address factory weaknesses.

• New timing chain and tensioner kit to prevent rattle.
• Revised VANOS solenoids with updated calibration.
• Pressure-tested cylinder head and valve seals to reduce oil consumption.
• Upgraded high-pressure fuel pump where required.

Each rebuilt unit is bench tested for compression, oil pressure, and ECU fault-free startup before being listed in stock for the X4 xDrive30i.

Warranty for Replacement BMW X4 xDrive30i Engines

All rebuilt and reconditioned X4 xDrive30i engines from our network come with industry-standard warranty coverage.

• 12-month unlimited mileage warranty for rebuilt engines.
• 6-12 month coverage on used engines depending on supplier.
• Specific exclusions for B48 timing chain components due to known design flaws.

Engine Finders is a comparison platform only; warranty terms vary by supplier. Always confirm exact coverage before purchase.