K03 Turbocharger | OEM 53039880110

K03 Turbocharger | OEM 53039880110

Part Number: 53039880110 (BorgWarner)
Cross-Reference / Interchange Numbers:

  • 53039700110 / 53039980110
  • 5303 970 0110 / 5303 988 0110 / 5303 998 0110
  • 5860016 / 55355617 / 55574478
  • Related but distinct variants: 53039880174 / 53039700174 (higher-output version — do not treat as identical without confirming)

Turbo Model: K03 (also referenced as K03-110 / K03-2074), BorgWarner
Engine: Z16LET / Z16LEL / Z16LER (Opel/Vauxhall 1.6L Turbo), 1598cc

Fitment / Compatible Vehicles:

  • Opel/Vauxhall Astra H, 1.6 Turbo, 2007-onward
  • Opel/Vauxhall Astra J, 1.6 Turbo
  • Opel/Vauxhall Corsa D, 1.6 Turbo / 1.6 VXR (note: VXR/OPC high-output variant may use the related 53039880174 part — confirm engine code)
  • Opel Meriva A, 1.6 Turbo OPC/VXR, 2005-onward
  • Opel/Vauxhall Insignia, 1.6 Turbo, 2007-onward
  • Opel Zafira, 1.6 Turbo (referenced on some listings)

(This is the classic GM/Opel Z16LET small-block turbo shared across the Astra/Corsa/Meriva/Insignia family — badged as Opel in most of Europe and Vauxhall in the UK.)

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Product Overview:

This is a K03 turbocharger from BorgWarner, engineered to OEM specifications for Opel/Vauxhall’s 1.6L Z16LET turbocharged petrol engine used across the Astra, Corsa, Meriva, and Insignia platforms — including the higher-output VXR/OPC performance variants. Rated to match factory outputs ranging from 110kW to 141kW depending on trim, it restores boost pressure, throttle response, and power delivery for vehicles suffering from turbo lag, boost leaks, limp mode, unusual noise, or a fully failed unit.

Key Features:

  • OEM-Matched Fitment: Manufactured to match the mounting configuration, flange pattern, and housing angles (Compressor Housing: 82.5°, Turbine Housing: 0°) of the original 53039880110 turbocharger for a direct bolt-on replacement.
  • BorgWarner K03 Platform: A well-established turbo design widely used across GM/Opel’s turbocharged small-engine lineup, known for solid reliability in this application.
  • Balanced Turbo Cartridge Construction: CHRA (core cartridge) built and dynamically balanced to OEM tolerances for smooth, consistent operation.
  • Complete Gasket Kit: Many listings include matched gaskets for straightforward installation.
  • Addresses a Well-Known Wear Point: These turbos are a common maintenance item on high-mileage Astra/Corsa/Insignia 1.6T models — this replacement restores full factory performance.
  • Warranty: Typically 1-year manufacturer warranty (confirm specific terms — some suppliers offer this as an exchange unit requiring a refundable surcharge/core return).

Before You Buy:

Please confirm the part number stamped on your original turbocharger (53039880110 vs. the higher-output 53039880174 variant) against your vehicle’s exact engine code and trim (standard Turbo vs. VXR/OPC), since these related K03 variants are tuned differently and are not interchangeable despite sharing the same basic platform. Let us know your vehicle’s VIN if you’d like help verifying exact compatibility before ordering.

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