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Application: 2007 to 2013 BMW 1' & 3' Series Automatic with the N51 SULEV Engine, Comes with the Sensor
- E82/E88 128i (2008–2013, SULEV, automatic)
- E90/E92/E93 328i, 328xi, 328i xDrive (2007–2013, SULEV, automatic)
(N51 SULEV engine, automatic transmission only — confirm your exact engine code and emissions spec before ordering, as non-SULEV N52 models use a different radiator)
Description:
Complete replacement radiator assembly, BMW part number 17117537292, for N51 SULEV-equipped 1-Series and 3-Series models with automatic transmission from 2007–2013. Unlike many aftermarket radiators for this application, this unit comes with the EAC (Environmental Active Catalyst) sensor already installed — the sensor is not sold separately by BMW and must be transferred from your old radiator if purchasing a sensor-less unit elsewhere. Buying this version saves you that extra step.
What's included:
- 1x complete radiator assembly
- 1x EAC temperature sensor (pre-mounted)
Why this part:
The N51 SULEV radiator is engine/emissions-specific — installing the wrong radiator (or forgetting to transfer the EAC sensor) can trigger emissions faults. A cracked or leaking radiator on these models leads to overheating and potential engine damage if not addressed.
⚠️ Fitment Note: This radiator fits N51 SULEV engines with automatic transmission only. Please confirm your engine code (N51 vs N52) and transmission type before ordering — installing the wrong radiator can cause fitment or sensor compatibility issues.
Returns: 30-day returns accepted on unused, uninstalled parts in original packaging.
