Mass air flow meter Mercedes-Benz S-CLASS (W221) 2005–2013 S 400 Hybrid (221.095, 221.195) M 272.974 A2730940948

Part type

Mass air flow meter

Also known as

MAF sensor, Air flow meter

Manufacturer

Mercedes-Benz

Model

S-CLASS (W221)

Years

2005–2013

Engine

S 400 Hybrid (221.095, 221.195)

Engine code

M 272.974

Part brand

Bosch

SKU

9737752

OEM

A2730940948

0280218190

Mass air flow meter removed from a Mercedes-Benz S-Class W221 with the 3.5-litre hybrid engine (M 272.974). This Bosch sensor measures intake air mass to help the engine control unit optimise fuel injection and ignition timing. OEM codes 0280218190 and A2730940948 identify the unit—verify these against your original sensor before ordering to ensure correct fitment.