OE llb321 — O2 Sensor

What is OE number llb321?

OE (Original Equipment) number llb321 is a manufacturer's reference code for O2 Sensor used to identify the exact specification of a part fitted during vehicle production. By cross-referencing this OE number, you can find 3 compatible aftermarket brands that match the same specification — often at a lower price than the original. All parts listed above are verified to match OE llb321.