Crankshaft position sensor Mercedes-Benz S-CLASS (W221) 2005–2013 S 400 Hybrid (221.095, 221.195) M 272.974 A6421530728

Part type

Crankshaft position sensor

Manufacturer

Mercedes-Benz

Model

S-CLASS (W221)

Years

2005–2013

Engine

S 400 Hybrid (221.095, 221.195)

Engine code

M 272.974

SKU

8901100

OEM

A6421530728

Crankshaft position sensor for Mercedes-Benz S-Class W221 (2005–2013) with the 3.5-litre M272.974 hybrid engine. OEM part number A6421530728. This sensor monitors crankshaft rotation and supplies critical timing data to the engine control unit for fuel injection and ignition sequencing. Removed from a donor vehicle. Match the OEM code against your original unit before ordering to ensure proper fitment.