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A1 Parts · Fuel System
M177 / M178 Fuel Injectors
$420.00
Direct injectors for the M177 and M178 4.0L V8 biturbo. Worn or mismatched injectors show up as uneven fuel trims and rough cold starts long before they throw a code, and on a tuned car that inconsistency limits how aggressive the calibration can safely be.
Fitment
Mercedes-AMG M177 / M178 4.0L V8 biturbo
- Direct-injection spec
- Restores consistent fuel delivery
- Supports higher-output calibrations
- Sold as a set
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