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Pick your trim to confirm fitment for your 2003 Hummer H1
Selecting your trim filters products to those guaranteed to fit and reveals trim-specific fitment notes.
Our brake master cylinder for the 2003 Hummer H1 fit the Base (6.5L V8 DIESEL Turbocharged) trim. Select your trim above to see exact fitment for your 2003 Hummer H1. All parts ship free with 30-day returns and guaranteed fitment.